2010 Cadillac Truck SRX FWD V6-3.0L Page 508

2010 Cadillac Truck SRX FWD V6-3.0L Page 508

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)

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 E14B or E14D seat cushion heating element.

2. Test for less than 10 Ohms between the low reference circuit terminal D and ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit test normal, replace the K29 seat

heating control module.

3. Ignition ON, test for 4.8 - 5.2 V between the signal circuit terminal C 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 K29 seat heating 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 K29 seat heating

control module.

4. If all circuits test normal, test or replace the E14 seat cushion heating element.

Component Testing

E14B or E14D Seat Cushion Heating Element

1. Ignition OFF, disconnect the harness connector at the appropriate E14B or E14D seat cushion heating element.

2. Test for 500 Ohms - 300 kOhms between the signal circuit terminal C and the low reference circuit terminal D.

瀚慖f not within the specified range, replace the E14 seat cushion heating element.

Repair Instructions

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

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

Passenger Seat Cushion Heater Replacement)

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

and programming

With Memory A45

DTC B1925 or B2170 (With 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