2010 Cadillac Truck SRX FWD V6-3.0L Page 506

2010 Cadillac Truck SRX FWD V6-3.0L Page 506

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

Repairs/Wiring Repairs)

Scan Tool Reference

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

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate driver seat motor listed below for which the DTC set:

* M50 seat front vertical motor

* M55 seat rear vertical motor

* M51 seat horizontal motor

* M56 seat back recline motor

2. Ignition ON, test for B+ between the 12 V reference circuit terminal 4 and ground.

瀚慖f less than the specified value, test the 12 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,

replace the K40 seat memory control module.

3. Test for 0.3 - 2 V between the signal circuit terminal 2 and ground.

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 K40 seat memory control module.

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

control module.

4. If all circuits test normal, replace the seat motor.

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)

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

and programming

Without Memory A45

DTC B1925 or B2170 (Without Memory A45)

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 B1925 02

- Driver Seat Cushion Heater Sensor Circuit Short to Ground

DTC B1925 05

- Driver Seat Cushion Heater Sensor Circuit High Voltage/Open

DTC B2170 02

- Passenger Seat Cushion Heater Sensor Circuit Short to Ground

DTC B2170 05

- Passenger Seat Cushion Heater Sensor Circuit High Voltage/Open

Diagnostic Fault Information