FORD

Wednesday, June 3, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 568

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

Ignition ON, observe the scan tool Exterior Driver Door Handle Proximity Sensor parameter while pressing and releasing the driver door handle

lock switch. The value should change between Active and Inactive as the switch is pressed and released.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the A24D Door Handle Assembly-Driver.

2. Ignition ON, verify the scan tool Exterior Driver Door Handle Proximity Sensor parameter is Inactive.

瀚慖f not the specified value, test the signal circuit terminal 3 for a short to ground. If the circuit tests normal, replace the K84 Keyless Entry

Control Module.

3. If all circuits test normal, test or replace the A24D Door Handle Assembly-Driver.

Repair Instructions

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

* Front Side Door Outside Handle Replacement (See: Body and Frame/Doors, Hood and Trunk/Doors/Front Door/Front Door Handle/Front

Door Exterior Handle/Service and Repair)

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

setup and programming

B2530

DTC B2530

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 B2530 02

- Front Fog Lamps Control Circuit Short to Ground

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

control circuit. When the front fog lamp relay is energized, the relay switch contacts close and battery voltage is applied through the front fog lamp

fuse to the front fog lamp supply voltage circuit which illuminates the front fog lamps.

Conditions for Running the DTC

Front fog lamps activated

Conditions for Setting the DTC

2010 Cadillac Truck SRX AWD V6-3.0L Page 1194

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

P0140

DTC P0134, P0140, P0154, or P0160 (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 P0134

- HO2S Circuit Insufficient Activity Bank 1 Sensor 1

DTC P0140

- HO2S Circuit Insufficient Activity Bank 1 Sensor 2

DTC P0154

- HO2S Circuit Insufficient Activity Bank 2 Sensor 1

DTC P0160

- HO2S Circuit Insufficient Activity Bank 2 Sensor 2

Diagnostic Fault Information

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* M50D front vertical motor up control terminal 7 X4

* M50D front vertical motor down control terminal 8 X4

* M55D rear vertical motor up control terminal 4 X5

* M55D rear vertical motor down control terminal 3 X5

* M51D horizontal motor forward control terminal 2 X5

* M51D horizontal motor rearward control terminal 1 X5

* M56D recline motor forward control terminal 5 X5

* M56D recline motor rearward control terminal 6 X5

* M5 adjustable pedal motor forward control terminal 7 X5

* M5 adjustable pedal motor rearward control terminal 8 X5

瀚慖f not the specified value, test the control circuit for a short to ground.

3. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminals listed below and ground:

* M50D front vertical motor up control terminal 7 X4

* M50D front vertical motor down control terminal 8 X4

* M55D rear vertical motor up control terminal 4 X5

* M55D rear vertical motor down control terminal 3 X5

* M51D horizontal motor forward control terminal 2 X5

* M51D horizontal motor rearward control terminal 1 X5

* M56D recline motor forward control terminal 5 X5

* M56D recline motor rearward control terminal 6 X5

* M5 adjustable pedal motor forward control terminal 7 X5

* M5 adjustable pedal motor rearward control terminal 8 X5

瀚慖f the test lamp illuminates, test the control circuit for a short to voltage.

4. If all circuits test normal, replace the K40 seat memory control module.

B3920 00 or B3920 0B

1. Ignition ON, use a scan tool to clear the current and history DTC.

2. Determine which motor set this DTC by operating the driver seat motors and adjustable pedals motor listed below one at a time in both

directions. Check for the DTC to set between each motor test.

* M50D seat front vertical motor

* M55D seat rear vertical motor

* M51D seat horizontal motor

* M56D seat back recline motor

* M5 adjustable pedals motor

3. Clear the diagnostic trouble code.

4. Ignition OFF, disconnect the harness connector at the appropriate seat or adjustable pedal motor for which the DTC set.

5. Ignition ON, operate the appropriate motor adjuster switch in both directions. DTC B3920 00 or B3920 0B should not set.

瀚慖f the DTC sets, test for a short between the appropriate control circuit terminals listed below. If the circuits test normal, replace the K40

seat memory control module.

* Seat motors terminal 1 and terminal 5

* M5 adjustable pedal motor terminal 2 and terminal 3

6. Test the appropriate control circuit terminals listed below for a high resistance.

* Seat motors terminal 1 and terminal 5

* M5 adjustable pedal motor terminal 2 and terminal 3

瀚慖f the circuits test normal, test or replace the appropriate seat or adjustable pedal motor.

B3920 42

If this DTC is set, replace the K40 seat memory control module.

Repair Instructions

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

* Driver or Passenger Seat Cushion Frame Replacement (See: Body and Frame/Seats/Service and Repair/Removal and Replacement/Driver or

Passenger Seat Cushion Frame Replacement)

* Brake and Accelerator Pedal Adjuster Actuator Motor Replacement (See: Accessories and Optional Equipment/Pedal Positioning

Tuesday, June 2, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 560

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

* Liftgate Release Switch Replacement (See: Body and Frame/Doors, Hood and Trunk/Trunk / Liftgate/Trunk / Liftgate Switch/Service and

Repair/Liftgate Release Switch Replacement)

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

Liftgate Handle Switch Malfunction

Liftgate Handle Switch Malfunction - DTC B2494

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 B2494 02

- Liftgate Handle Switch Circuit Short to Ground

Diagnostic Fault Information

Circuit/System Description

The power liftgate handle switch circuit provides a single input to the liftgate control module. The liftgate handle switch is supplied a signal

voltage, when the switch contact closes and the voltage drops, the liftgate control module detects the voltage drop and commands the liftgate to

release.

Conditions for Running the DTC

The system voltage is 9-16 V.

Conditions for Setting the DTC

The liftgate handle switch signal circuit is active for greater than 30 seconds.

Action Taken When the DTC Sets

The liftgate control module will ignore the signal from the liftgate handle switch. Normal power liftgate operation will be available from the interior

liftgate control switch or from a request from the remote keyless entry module.

Conditions for Clearing the DTC

* The DTC will be current for as long as the fault is present.

* When the fault is no longer present, the DTC will be a history DTC.

* A history DTC will clear after 50 ignition cycles.

Diagnostic Aids

* If the liftgate will not release from the closed position, refer to Opening the Liftgate Without Electrical Power (See: Body and Frame/Doors,

Hood and Trunk/Trunk / Liftgate/Service and Repair/Procedures) for the appropriate procedure

* Whenever the liftgate control module loses power or is disconnected, the ignition must be cycled OFF then ON in order to reactivate the

liftgate control module.

Reference Information

Schematic Reference

Liftgate Schematics (See: Body and Frame/Locks/Diagrams/Electrical Diagrams/Liftgate Schematics)

2010 Cadillac Truck SRX AWD V6-3.0L Page 699

Repair Instructions

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

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

* 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))

* Windshield Washer With Seal Pump Replacement (See: Sensors and Switches/Sensors and Switches - Wiper and Washer

Systems/Windshield Washer Switch/Service and Repair/Windshield Washer With Seal Pump Replacement)

B3843

DTC B3843

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 B3843 02

- Outside Air Quality Sensor Circuit Short to Ground

DTC B3843 05

- Outside Air Quality Sensor Circuit High Voltage/Open

DTC B3843 08

- Outside Air Quality Sensor Circuit Performance - Signal Invalid

Circuit/System Description

The HVAC control module detects exhaust gas by an air quality sensor. The air quality sensor is a 3-wire sensor with an ignition voltage circuit, a

ground circuit and a signal circuit.

The information is pulse width modulation (PWM) signal generated on the output pin.

The HVAC control module evaluates the information of the air quality sensor and closes the recirculation door while in the automatic mode as soon

as the concentration of pollutants exceeds a preset value.

Conditions for Running the DTC

* Ignition ON.

* The HVAC control module is ON.

Conditions for Setting the DTC

B3843 02

No PWM is detected and the signal is low.

B3843 05

No PWM is detected and the signal is high.

B3843 08

The Sensor sends a 5% PWM signal indicating an internal sensor short circuit or open circuit.

Action Taken When the DTC Sets

The automatic recirculation mode is disabled.

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6. If all circuits test normal, test or replace the S30 headlamp switch.

Repair Instructions

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

* Headlamp Switch Replacement (See: Lighting and Horns/Headlamp/Headlamp Switch/Service and Repair)

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

HVAC - Automatic

DTC B0163, B0183, or B1405

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 B0163 02

- Passenger Compartment Temperature Sensor Circuit Short to Ground

DTC B0163 05

- Passenger Compartment Temperature Sensor Circuit High Voltage/Open

DTC B0183 02

- Solar Load Sensor Circuit Short to Ground

DTC B0183 05

- Solar Load Sensor Circuit High Voltage/Open

DTC B1405 02

- Control Module Voltage Reference Output 2 Circuit Short to Ground

DTC B1405 05

- Control Module Voltage Reference Output 2 Circuit High Voltage/Open

Circuit/System Description

The ambient light/sunload sensor includes the sunload sensor and passenger compartment temperature sensor.

This sensor assembly provides information about:

* Sun heat intensity

* Elevation

* Azimuth

* Passenger compartment temperature

The sunload sensor is connected to ground and to a 12 V clocked power supply through the HVAC control module. This clocked power supply is to

power the sensor electronics and to work as a clock generator to the sunload sensor micro controller. The sensor uses a pulse signal for data

identification and transferring the sun intensity measurement. At each positive transition from the clocked supply input, the sunload sensor micro

controller will shift channels enabling new intensity measurement on the signal output to the HVAC control module. The signal voltage varies

between 0-4 V.

The passenger compartment temperature sensor is a negative temperature co-efficient thermistor. A signal and low reference circuit enables the

sensor to operate. As the air temperature increases, the sensor resistance decreases. The sensor signal varies between 0-5 V.

Bright or high intensity light causes the vehicles interior temperature to increase. The HVAC system compensates for the increased temperature by

diverting additional cool air into the vehicle.

Conditions for Running the DTC

* Ignition ON.

* The HVAC control module is ON.

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Ignition voltage is supplied directly to the wastegate solenoid valve. The ECM controls the solenoid valve 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 voltage by monitoring the feedback voltage.

Conditions for Running the DTCs

* The engine speed is greater than 80 RPM.

* The battery voltage is between 10-18 V.

* The ECM has commanded the wastegate solenoid valve ON and OFF at least once during the ignition cycle.

* The DTCs run continuously within the enabling conditions.

Conditions for Setting the DTCs

P0244

The ECM detects the wastegate solenoid valve control circuit is open.

P0245

The ECM detects the wastegate solenoid valve control circuit is shorted to ground.

P0246

The ECM detects the wastegate solenoid valve control circuit is shorted to voltage.

Action Taken When the DTCs Set

DTCs P0244, P0245, P0246 are Type B DTCs.

Conditions for Clearing the MIL/DTCs

DTCs P0244, P0245, P0246 are Type B DTCs.

Reference Information

Schematic Reference

Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Turbocharger System Description ()

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Engine running, command the Turbocharger Wastegate Solenoid Valve to 20% with a scan tool while observing the following control circuit

status parameters:

* Turbocharger Wastegate Solenoid Valve Control Circuit High Voltage Test Status

* Turbocharger Wastegate Solenoid Valve Control Circuit Open Test Status