Showing posts with label 1. Ignition OFF. Show all posts
Showing posts with label 1. Ignition OFF. Show all posts

Wednesday, January 6, 2021

2010 Cadillac Truck SRX AWD V6-3.0L Page 678

2010 Cadillac Truck SRX AWD V6-3.0L Page 678



1. Ignition OFF, disconnect the harness connector at the M16 adjustable pedal assembly.



2. Ignition OFF, test for less than 10 ohm between the low reference circuit terminal 4 and ground.



瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K40



memory seat control module.



3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 6 and ground.



瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,



replace the K40 memory seat control module.



瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K40 memory



seat control module.



4. Ignition ON, verify the scan tool Adjustable Pedals Horizontal Position parameter is less than 0.45 V.



瀚慖f greater than the specified range, test the signal circuit terminal 5 for a short to voltage. If the circuit tests normal, replace the K40



memory seat control module.



5. Install a 3 A fused jumper wire between the signal circuit terminal 5 and the 5 V reference circuit terminal 6. Verify the scan tool Adjustable



Pedals Horizontal Position parameter is greater than 4.75 V.



瀚慖f less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the



K40 memory seat control module.



6. If all circuits test normal, test or replace the M16 adjustable pedal assembly.



B3606 61



1. Ignition ON, verify that no other adjustable pedal DTCs are set.



瀚慖f other adjustable pedal DTCs are set, diagnosis those DTCs first.



2. Ignition OFF, disconnect the harness connector at M16 adjustable pedal assembly.



3. Connect a test lamp between the motor control circuit terminal 2 and terminal 3.



4. Ignition ON, verify that a test lamp illuminates while commanding the adjustable pedals to move in both directions with the scan tool.



瀚慖f the test lamp does not illuminate, test the motor control circuits for an open/high resistance. If the circuits test normal replace the K40



memory seat control module.



5. If all circuits test normal, test or replace the M16 adjustable pedal assembly.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Brake Pedal Assembly Replacement (See: Accessories and Optional Equipment/Pedal Positioning System/Service and Repair/Removal and



Replacement/Brake Pedal Assembly Replacement)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for the K40 memory seat control module



replacement, setup, and programming



B3607



DTC B3607



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptor



DTC B3607 4B



- Adjustable Pedal Motor Circuit Calibration Not Learned



Circuit/System Description



After replacement of adjustable pedal mechanical components or if the memory seat control module is reprogrammed or replaced, the adjustable

Friday, January 1, 2021

2010 Cadillac Truck SRX AWD V6-3.0L Page 1017

2010 Cadillac Truck SRX AWD V6-3.0L Page 1017



1. Ignition OFF, disconnect the harness connector at the B47 fuel pressure sensor.



2. Ignition OFF, test for less than 1 ohm between the low reference circuit terminal 2 and ground.



瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K27



fuel pump flow control module.



3. Ignition ON, test for 4.8-5.2 V between the B47 fuel pressure sensor 5 V reference circuit terminal 3 and ground.



瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,



replace the K27 fuel pump flow control module.



瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K27 fuel



pump flow control module.



4. Verify the scan tool fuel pressure sensor voltage is less than 1 V.



瀚慖f greater than the specified range, test the signal circuit terminal 1 for a short to voltage. If the circuit tests normal, replace the K27 fuel



pump flow control module.



5. Install a 3 A fused jumper wire between the signal circuit terminal 1 and the 5 V reference circuit terminal 3. Verify the scan tool 5 V



reference is greater than 4.8 V.



瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace



the K27 fuel pump flow control module.



6. If all circuits test normal, replace the B47 fuel pressure sensor.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Fuel Pressure Sensor Replacement - Fuel Injection Fuel Rail (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pressure



Sensor/Switch/Service and Repair/Fuel Pressure Sensor Replacement - Fuel Injection Fuel Rail)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for fuel pump control module replacement, setup,



and programming



P018D



DTC P018B-P018D



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC P018B



- Fuel Pressure Sensor Performance



DTC P018C



- Fuel Pressure Sensor Circuit Low Voltage



DTC P018D



- Fuel Pressure Sensor Circuit High Voltage



Diagnostic Fault Information



Circuit/System Description

Saturday, December 12, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 1183

2010 Cadillac Truck SRX AWD V6-3.0L Page 1183



1. Ignition OFF, disconnect the harness connector at the appropriate B52 HO2S.



2. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal D and ground.



瀚慖f the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests



normal and the B52 HO2S heater circuit fuse is open, test all components connected to the fuse and replace as necessary.



3. Ignition ON, observe the appropriate scan tool HO2S Heater Control Open Circuit Test Status parameter. The parameter should display



Malfunction.



瀚慖f not the specified value, test the heater control circuit terminal E for a short to ground, or for a short to voltage. If the circuit tests



normal, replace the K20 ECM.



4. Connect a 3 A fused jumper wire between the heater control circuit terminal E and ground. Observe the appropriate scan tool HO2S Heater



Control Circuit Low Voltage Test Status parameter. The parameter should transition from OK to Malfunction.



瀚慖f not the specified value, test the heater control circuit terminal E for an open/high resistance. If the circuit tests normal, replace the K20



ECM.



Note:



* Less than 10 ohm of additional resistance on the ignition voltage circuit, or control circuit may set a DTC. If there is resistance on a



circuit, the driver will remain ON and the scan tool HO2S High Voltage Test Status parameter will display OK.



* Performing this test may set additional DTCs.



5. Ignition OFF, connect a 10 A fused jumper wire between the control circuit terminal E and the ignition voltage circuit terminal D.



6. Engine idling, observe the appropriate HO2S Control Circuit High Voltage Test Status parameter. The parameter should transition from Not



Run to Malfunction.



瀚慖f not the specified value, test the control circuit and the ignition voltage circuit for high resistance. If the circuits test normal, replace the



K20 ECM.



7. If all circuits test normal, test or replace the appropriate B52 HO2S.



Repair Instructions



Caution: Refer to Heated Oxygen Sensor Resistance Learn Reset Caution (See: Powertrain Management/Computers and Control



Systems/Oxygen Sensor/Service Precautions/Heated Oxygen Sensor Resistance Learn Reset Caution).



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen



Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 1 Sensor 1)



* Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen



Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 1 Sensor 2)



* Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen



Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 2 Sensor 1)



* Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen



Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 2 Sensor 2)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming



P135A



DTC P135A or P135B (LF1)



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC P135A



- Ignition Coil Supply Voltage Circuit Bank 1



DTC P135B



- Ignition Coil Supply Voltage Circuit Bank 2

Thursday, November 26, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 1485

2010 Cadillac Truck SRX AWD V6-3.0L Page 1485



1. Ignition OFF, disconnect the KR25 secondary air injection pump relay.



2. Test for 70-110 ohm between terminals 85 and 86.



瀚慖f the resistance is not within the specified range, replace the KR25 secondary air injection pump relay.



3. Test for infinite resistance between the following terminals:



* 86 and 87



* 86 and 30



* 85 and 87



* 87 and 30



瀚慖f not the specified value, replace the KR25 secondary air injection pump relay.



4. Install a 20 A fused jumper wire between relay terminal 86 and 12 V. Install a jumper wire between relay terminal 85 and ground. Test for



less than 2 ohm between terminals 87 and 30.



瀚慖f greater than the specified range, replace the KR25 secondary air injection pump relay.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Relay Replacement (Attached to Wire Harness) (See: Power and Ground Distribution/Power Distribution Relay/Service and Repair/Relay



Replacement (Attached to Wire Harness))Relay Replacement (Within an Electrical Center) (See: Power and Ground Distribution/Power



Distribution Relay/Service and Repair/Relay Replacement (Within an Electrical Center))



* Secondary Air Injection Pump Replacement (See: Powertrain Management/Emission Control Systems/Air Injection/Air Injection



Pump/Service and Repair)



P0418



DTC P0418, P2257, or P2258



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions)provides an overview of each diagnostic category.



DTC Descriptors



DTC P0418



- Secondary Air Injection Pump Control Circuit



DTC P2257



- Secondary Air Injection Pump Relay Control Circuit Low Voltage



DTC P2258



- Secondary Air Injection Pump Relay Control Circuit High Voltage



Diagnostic Fault Information



Circuit/System Description



The secondary air injection system aids in the reduction of hydrocarbon emissions during a cold start. The electric air pump forces fresh air into the



exhaust stream in order to accelerate the catalyst operation. Ignition voltage is supplied directly to the secondary air injection pump relay. The



engine control module (ECM) controls the relay by grounding the control circuit with a solid state device called a driver. The driver is equipped



with a feedback circuit that is pulled-up to a voltage. The ECM can determine if the control circuit is open, shorted to ground, or shorted to a

2010 Cadillac Truck SRX AWD V6-3.0L Page 349

2010 Cadillac Truck SRX AWD V6-3.0L Page 349



1. Ignition OFF, disconnect the RR CLOSURE relay.



2. Connect a test lamp between the control circuit terminal 85 and ground.



3. Ignition ON, command the Endgate Unlatch with a scan tool. The test lamp should turn ON when commanding the UNLATCH state.



瀚慖f the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace



the K9 BCM.



瀚慖f the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.



4. If all circuits test normal, test or replace the RR CLOSURE relay.



Component Testing



1. Ignition OFF, disconnect the RR CLOSURE relay.



2. Test for 60-200 ohm between terminals 85 and 86.



瀚慖f not within the specified range, replace the RR CLOSURE relay.



3. Test for infinite resistance between the following terminals:



* 30 and 86



* 30 and 87



* 30 and 85



* 85 and 87



瀚慖f not the specified value, replace the RR CLOSURE relay.



4. Install a 3A fused jumper wire between relay terminal 85 and 12V. Install a jumper wire between relay terminal 86 and ground. Test for less



than 2 ohm between terminals 30 and 87.



瀚慖f greater than the specified range, replace the RR CLOSURE relay.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Relay Replacement (Attached to Wire Harness) (See: Power and Ground Distribution/Power Distribution Relay/Service and Repair/Relay



Replacement (Attached to Wire Harness))Relay Replacement (Within an Electrical Center) (See: Power and Ground Distribution/Power



Distribution Relay/Service and Repair/Relay Replacement (Within an Electrical Center))



* Control Module References (See: Testing and Inspection/Programming and Relearning)for BCM replacement, setup and programming



B364A



DTC B364A



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions)provides an overview of each diagnostic category.



DTC Descriptor



DTC B364A 00



- Surveillance Mode Switch Circuit Malfunction



Diagnostic Fault Information



Circuit/System Description



The front fog lamp relay is supplied with battery voltage at all times. The front fog lamp switch signal circuit is grounded momentarily by pressing



the front fog lamp switch. The body control module (BCM) energizes the front fog lamp relay by applying ground to the front fog lamp relay

Thursday, November 5, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 1068

2010 Cadillac Truck SRX AWD V6-3.0L Page 1068



1. Ignition OFF, disconnect the harness connector at the appropriate B52 HO2S.



2. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal D and ground.



瀚慖f the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests



normal and the B52 HO2S heater circuit fuse is open, test all components connected to the fuse and replace as necessary.



3. Ignition ON, observe the appropriate scan tool HO2S Heater Control Open Circuit Test Status parameter. The parameter should display



Malfunction.



瀚慖f not the specified value, test the heater control circuit terminal E for a short to ground, or for a short to voltage. If the circuit tests



normal, replace the K20 ECM.



4. Connect a 3 A fused jumper wire between the heater control circuit terminal E and ground. Observe the appropriate scan tool HO2S Heater



Control Circuit Low Voltage Test Status parameter. The parameter should transition from OK to Malfunction.



瀚慖f not the specified value, test the heater control circuit terminal E for an open/high resistance. If the circuit tests normal, replace the K20



ECM.



Note:



* Less than 10 ohm of additional resistance on the ignition voltage circuit, or control circuit may set a DTC. If there is resistance on a



circuit, the driver will remain ON and the scan tool HO2S High Voltage Test Status parameter will display OK.



* Performing this test may set additional DTCs.



5. Ignition OFF, connect a 10 A fused jumper wire between the control circuit terminal E and the ignition voltage circuit terminal D.



6. Engine idling, observe the appropriate HO2S Control Circuit High Voltage Test Status parameter. The parameter should transition from Not



Run to Malfunction.



瀚慖f not the specified value, test the control circuit and the ignition voltage circuit for high resistance. If the circuits test normal, replace the



K20 ECM.



7. If all circuits test normal, test or replace the appropriate B52 HO2S.



Repair Instructions



Caution: Refer to Heated Oxygen Sensor Resistance Learn Reset Caution (See: Powertrain Management/Computers and Control



Systems/Oxygen Sensor/Service Precautions/Heated Oxygen Sensor Resistance Learn Reset Caution).



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen



Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 1 Sensor 1)



* Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen



Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 1 Sensor 2)



* Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen



Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 2 Sensor 1)



* Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen



Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 2 Sensor 2)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming



P054B



DTC P052B, P052D, P054B, or P054D



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC P052B



- Cold Start Intake Camshaft Position System Performance Bank 1 - Retarded



DTC P052D



- Cold Start Intake Camshaft Position System Performance Bank 2 - Retarded

Thursday, October 22, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 629

2010 Cadillac Truck SRX AWD V6-3.0L Page 629



1. Ignition OFF, disconnect the harness connector at the T10J center console front keyless entry antenna.



2. Ignition ON, test for less than 1 V between the signal circuit terminal 1 and ground.



瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K84 keyless entry



control module.



3. Ignition OFF, install a DMM between the signal circuit terminal 1 and ground. Set the DMM to capture DC voltage using the MIN MAX



function.



4. Activate the antenna by pressing the ignition mode switch. Verify the MAX voltage captured by the DMM is OL or is greater than.5 V.



瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace



the K84 keyless entry control module.



5. Install a DMM between the signal circuit terminal 1 and the low reference circuit terminal 2. Set the DMM to capture DC voltage using the



MIN MAX function.



6. Activate the antenna by pressing the rear closure touch pad. Verify the MAX voltage captured by the DMM is greater than.5 V.



瀚慖f less than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K84



keyless entry control module.



7. If all circuits test normal, replace the T10J center console front keyless entry antenna. Verify DTC B3122 is not set.



瀚慖f the DTC is set, replace the K84 keyless entry control module.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Ignition Lock Key Transmitter Antenna Replacement - Instrument Panel (See: Accessories and Optional Equipment/Antitheft and Alarm



Systems/Keyless Entry/Antenna - Keyless Entry/Service and Repair/Ignition Lock Key Transmitter Antenna Replacement - Instrument Panel



)



* Control Module References (See: Testing and Inspection/Programming and Relearning)for keyless entry control module replacement, setup,



and programming



B3123



DTC B3123



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions)provides an overview of each diagnostic category.



DTC Descriptors



DTC B3123 02



- Keyless Entry Antenna 5 Short to Ground



DTC B3123 05



- Keyless Entry Antenna 5 High Voltage/Open



Diagnostic Fault Information



Circuit/System Description



The rear center console antenna is located in rear of the center console assembly and is used to establish low frequency communications with the



keyless entry transmitter. When the driver attempts to change the ignition status of the vehicle, the keyless entry control module communicates with



the rear center console antenna.

Tuesday, October 20, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 1219

2010 Cadillac Truck SRX AWD V6-3.0L Page 1219



1. Ignition OFF, disconnect the harness connector at the appropriate B52 HO2S.



2. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal D and ground.



瀚慖f the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests



normal and the B52 HO2S heater circuit fuse is open, test all components connected to the fuse and replace as necessary.



3. Ignition ON, observe the appropriate scan tool HO2S Heater Control Open Circuit Test Status parameter. The parameter should display



Malfunction.



瀚慖f not the specified value, test the heater control circuit terminal E for a short to ground, or for a short to voltage. If the circuit tests



normal, replace the K20 ECM.



4. Connect a 3 A fused jumper wire between the heater control circuit terminal E and ground. Observe the appropriate scan tool HO2S Heater



Control Circuit Low Voltage Test Status parameter. The parameter should transition from OK to Malfunction.



瀚慖f not the specified value, test the heater control circuit terminal E for an open/high resistance. If the circuit tests normal, replace the K20



ECM.



Note:



* Less than 10 ohm of additional resistance on the ignition voltage circuit, or control circuit may set a DTC. If there is resistance on a



circuit, the driver will remain ON and the scan tool HO2S High Voltage Test Status parameter will display OK.



* Performing this test may set additional DTCs.



5. Ignition OFF, connect a 10 A fused jumper wire between the control circuit terminal E and the ignition voltage circuit terminal D.



6. Engine idling, observe the appropriate HO2S Control Circuit High Voltage Test Status parameter. The parameter should transition from Not



Run to Malfunction.



瀚慖f not the specified value, test the control circuit and the ignition voltage circuit for high resistance. If the circuits test normal, replace the



K20 ECM.



7. If all circuits test normal, test or replace the appropriate B52 HO2S.



Repair Instructions



Caution: Refer to Heated Oxygen Sensor Resistance Learn Reset Caution (See: Powertrain Management/Computers and Control



Systems/Oxygen Sensor/Service Precautions/Heated Oxygen Sensor Resistance Learn Reset Caution).



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen



Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 1 Sensor 1)



* Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen



Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 1 Sensor 2)



* Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen



Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 2 Sensor 1)



* Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen



Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 2 Sensor 2)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming



P0157



DTC P0131, P0132, P0137, P0138, P0151, P0152, P0157, P0158, P2A00, P2A01, P2A03, or P2A04 (LF1)



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC P0131



- HO2S Circuit Low Voltage Bank 1 Sensor 1



DTC P0132



- HO2S Circuit High Voltage Bank 1 Sensor 1

Monday, October 19, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 839

2010 Cadillac Truck SRX AWD V6-3.0L Page 839



1. Ignition OFF, disconnect the harness connector at the appropriate Q37 shock absorber actuator.



2. Perform this setup step in the following order:



1. Connect a test lamp and ammeter in series between both Q37 shock absorber actuator harness connector control circuit terminals.



2. Ignition ON, with a scan tool, attempt to clear all K19 suspension control module DTC's (codes may not clear).



3. With a scan tool, command the Damper Actuator to Increase the amperage to approximately 400 mA and Decrease to 0 mA while comparing



the ammeter displayed values and scan tool Damper Actuator Command parameter displayed values. Verify the following:



* The test lamp is illuminated.



* The ammeter displayed values and scan tool Damper Actuator Command parameter displayed values change and are simultaneously



within 15 mA of each other.



瀚慖f the test lamp is not illuminated and/or the values are not within the specified range, test both control circuits for a short to voltage, short



to ground, or open/high resistance. If all circuits test normal, replace the K19 suspension control module.



4. If all circuits test normal, test or replace the Q37 shock absorber actuator.



Component Testing



Static Test



1. Ignition OFF, disconnect the harness connector at the appropriate Q37 shock absorber actuator.



2. Test for 2-3 ohm between the Q37 shock absorber actuator control terminals.



瀚慖f not within the specified range, replace the Q37 shock absorber actuator.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Strut, Strut Component, or Spring Replacement (See: Steering and Suspension/Suspension/Suspension Spring ( Coil / Leaf )/Service and



Repair/Front Suspension Coil Spring)



* Shock Absorber Replacement (See: Steering and Suspension/Suspension/Suspension Strut / Shock Absorber/Service and Repair/Rear



Suspension Shock Absorber)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for suspension control module replacement, setup,



and programming



C0580



DTC C0575, C0580, C0585, or C0590



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC C0575 02



- Left Front Damper Actuator Circuit Short to Ground



DTC C0575 04



- Left Front Damper Actuator Circuit Open



DTC C0575 0F



- Left Front Damper Actuator Circuit Signal Erratic



DTC C0580 02



- Right Front Damper Actuator Circuit Short to Ground



DTC C0580 04



- Right Front Damper Actuator Circuit Open



DTC C0580 0F



- Right Front Damper Actuator Circuit Signal Erratic

Saturday, October 17, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 366

2010 Cadillac Truck SRX AWD V6-3.0L Page 366



1. Ignition OFF, disconnect the harness connector at the S45B liftgate control switch-interior.



2. Test for the values listed below between the signal terminal 3 and the ground terminal 1.



* 600-650 ohm in the Off position



* 125k-140k ohm in the 3/4 position



* 400k-415k ohm in the Max position



瀚慖f not within the specified ranges, replace the S45B liftgate control switch-interior.



3. Test for infinite resistance between the signal terminal 4 and the ground terminal 1 with the switch open.



瀚慖f not the specified value, replace the S45B liftgate control switch-interior.



4. Test for less than 3 ohm between the signal terminal 4 and the ground terminal 1 with the switch closed.



瀚慖f greater than the specified range, replace the S45B liftgate control switch-interior.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the repair.



* Liftgate Actuator Control Switch Replacement (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Trunk / Liftgate



Motor/Service and Repair)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for the liftgate control module replacement, setup



and programming



B396E



Liftgate Close Switch Malfunction - DTC B396E



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptor



DTC B396E 02



- Rear Liftgate Actuator Switch Circuit Short To Ground



Diagnostic Fault Information



Circuit/System Description



The liftgate close switch circuit provides a single input to the liftgate control module. The liftgate close switch is supplied a signal voltage, when



the switch contact closes, the liftgate control module detects the voltage drop and commands the liftgate to close.



Conditions for Running the DTC



The system voltage is 9-16 V.



Conditions for Setting the DTC



The liftgate control module detects the liftgate close signal circuit is active for greater than 30 seconds.



Action Taken When the DTC Sets



The liftgate control module will ignore the input from the liftgate close switch, the liftgate will only power close by using the interior liftgate

Wednesday, September 16, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 1144

2010 Cadillac Truck SRX AWD V6-3.0L Page 1144



1. Ignition OFF, disconnect the harness connector at the B34 engine coolant temperature (ECT) sensor.



Note: A thermometer can be used to test the sensor off the vehicle.



2. Test the ECT sensor by varying the sensor temperature while monitoring the sensor resistance. Compare the readings with the Temperature



Versus Resistance - Engine Coolant Temperature Sensor (See: Powertrain Management/Computers and Control



Systems/Specifications/Temperature Versus Resistance - Engine Coolant Temperature Sensor) table and verify that the resistance is within 5



% of the specification.



瀚慖f not within the specified range, replace the B34 ECT sensor.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Engine Coolant Temperature Sensor Replacement (LF1) (See: Engine, Cooling and Exhaust/Cooling System/Engine - Coolant Temperature



Sensor/Switch/Coolant Temperature Sensor/Switch (For Computer)/Service and Repair)Engine Coolant Temperature Sensor Replacement



(LAU) (See: Engine, Cooling and Exhaust/Cooling System/Engine - Coolant Temperature Sensor/Switch/Coolant Temperature



Sensor/Switch (For Computer)/Service and Repair)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming



P0121



DTC P0121-P0123, P0222, P0223, or P2135 (LF1, LFW)



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC P0121



- Throttle Position Sensor Performance



DTC P0122



- Throttle Position Sensor 1 Circuit Low Voltage



DTC P0123



- Throttle Position Sensor 1 Circuit High Voltage



DTC P0222



- Throttle Position Sensor 2 Circuit Low Voltage



DTC P0223



- Throttle Position Sensor 2 Circuit High Voltage



DTC P2135



- Throttle Position Sensors 1-2 Not Plausible



Diagnostic Fault Information



Typical Scan Tool Data

Tuesday, July 21, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 1050

2010 Cadillac Truck SRX AWD V6-3.0L Page 1050



1. Ignition OFF, disconnect the harness connector at the appropriate B52 HO2S.



2. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal D and ground.



瀚慖f the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests



normal and the B52 HO2S heater circuit fuse is open, test all components connected to the fuse and replace as necessary.



3. Ignition ON, observe the appropriate scan tool HO2S Heater Control Open Circuit Test Status parameter. The parameter should display



Malfunction.



瀚慖f not the specified value, test the heater control circuit terminal E for a short to ground, or for a short to voltage. If the circuit tests



normal, replace the K20 ECM.



4. Connect a 3 A fused jumper wire between the heater control circuit terminal E and ground. Observe the appropriate scan tool HO2S Heater



Control Circuit Low Voltage Test Status parameter. The parameter should transition from OK to Malfunction.



瀚慖f not the specified value, test the heater control circuit terminal E for an open/high resistance. If the circuit tests normal, replace the K20



ECM.



Note:



* Less than 10 ohm of additional resistance on the ignition voltage circuit, or control circuit may set a DTC. If there is resistance on a



circuit, the driver will remain ON and the scan tool HO2S High Voltage Test Status parameter will display OK.



* Performing this test may set additional DTCs.



5. Ignition OFF, connect a 10 A fused jumper wire between the control circuit terminal E and the ignition voltage circuit terminal D.



6. Engine idling, observe the appropriate HO2S Control Circuit High Voltage Test Status parameter. The parameter should transition from Not



Run to Malfunction.



瀚慖f not the specified value, test the control circuit and the ignition voltage circuit for high resistance. If the circuits test normal, replace the



K20 ECM.



7. If all circuits test normal, test or replace the appropriate B52 HO2S.



Repair Instructions



Caution: Refer to Heated Oxygen Sensor Resistance Learn Reset Caution (See: Powertrain Management/Computers and Control



Systems/Oxygen Sensor/Service Precautions/Heated Oxygen Sensor Resistance Learn Reset Caution).



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen



Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 1 Sensor 1)



* Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen



Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 1 Sensor 2)



* Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen



Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 2 Sensor 1)



* Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen



Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 2 Sensor 2)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming



P0050



DTC P0030, P0036, P0050, P0053, P0054, P0056, P0059, P0060, P0135, P0141, P0155, or P0161 (LF1)



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC P0030



- HO2S Heater Control Circuit Bank 1 Sensor 1



DTC P0036



- HO2S Heater Control Circuit Bank 1 Sensor 2

Saturday, June 27, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 1015

2010 Cadillac Truck SRX AWD V6-3.0L Page 1015



1. Ignition OFF, disconnect the harness connector at the B47 fuel pressure sensor.



2. Ignition OFF, test for less than 1 ohm between the low reference circuit terminal 2 and ground.



瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K27



fuel pump flow control module.



3. Ignition ON, test for 4.8-5.2 V between the B47 fuel pressure sensor 5 V reference circuit terminal 3 and ground.



瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,



replace the K27 fuel pump flow control module.



瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K27 fuel



pump flow control module.



4. Verify the scan tool fuel pressure sensor voltage is less than 1 V.



瀚慖f greater than the specified range, test the signal circuit terminal 1 for a short to voltage. If the circuit tests normal, replace the K27 fuel



pump flow control module.



5. Install a 3 A fused jumper wire between the signal circuit terminal 1 and the 5 V reference circuit terminal 3. Verify the scan tool 5 V



reference is greater than 4.8 V.



瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace



the K27 fuel pump flow control module.



6. If all circuits test normal, replace the B47 fuel pressure sensor.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Fuel Pressure Sensor Replacement - Fuel Injection Fuel Rail (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pressure



Sensor/Switch/Service and Repair/Fuel Pressure Sensor Replacement - Fuel Injection Fuel Rail)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for fuel pump control module replacement, setup,



and programming



P018C



DTC P018B-P018D



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC P018B



- Fuel Pressure Sensor Performance



DTC P018C



- Fuel Pressure Sensor Circuit Low Voltage



DTC P018D



- Fuel Pressure Sensor Circuit High Voltage



Diagnostic Fault Information



Circuit/System Description

Thursday, June 18, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 1019

2010 Cadillac Truck SRX AWD V6-3.0L Page 1019



1. Ignition OFF, disconnect the harness connector at the B47 fuel pressure sensor.



2. Ignition OFF, test for less than 1 ohm between the low reference circuit terminal 2 and ground.



瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K27



fuel pump flow control module.



3. Ignition ON, test for 4.8-5.2 V between the B47 fuel pressure sensor 5 V reference circuit terminal 3 and ground.



瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,



replace the K27 fuel pump flow control module.



瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K27 fuel



pump flow control module.



4. Verify the scan tool fuel pressure sensor voltage is less than 1 V.



瀚慖f greater than the specified range, test the signal circuit terminal 1 for a short to voltage. If the circuit tests normal, replace the K27 fuel



pump flow control module.



5. Install a 3 A fused jumper wire between the signal circuit terminal 1 and the 5 V reference circuit terminal 3. Verify the scan tool 5 V



reference is greater than 4.8 V.



瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace



the K27 fuel pump flow control module.



6. If all circuits test normal, replace the B47 fuel pressure sensor.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Fuel Pressure Sensor Replacement - Fuel Injection Fuel Rail (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pressure



Sensor/Switch/Service and Repair/Fuel Pressure Sensor Replacement - Fuel Injection Fuel Rail)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for fuel pump control module replacement, setup,



and programming



P0019



DTC P0016, P0017, P0018, or P0019 (Without LF1, LFW)



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC P0016



- Crankshaft Position - Intake Camshaft Position Not Plausible Bank 1



DTC P0017



- Crankshaft Position - Exhaust Camshaft Position Not Plausible Bank 1



DTC P0018



- Crankshaft Position - Intake Camshaft Position Not Plausible Bank 2



DTC P0019



- Crankshaft Position - Exhaust Camshaft Position Not Plausible Bank 2



Circuit/System Description



The engine control module (ECM) uses the crankshaft position sensor and the camshaft position sensor pulses to monitor the correlation between



the crankshaft and the camshaft position. An improper relative position can be caused by either engine timing or improper indexing of the camshaft



drive chain.



Conditions for Running the DTC