B191A

DTC B191A or B191B

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B191A 00
- Front Heated Seat Module

DTC B191B 00
- Rear Heated Seat Module

Circuit/System Description

An internal fault is detection inside the control module. No external circuits are involved.

Conditions for Running the DTC

Ignition ON.

Conditions for Setting the DTC

The control module detects an internal fault.

Action Taken When the DTC Sets

The seat heating control module will disable all heated seat functions.

Conditions for Clearing the DTC

* The DTC clears when the diagnostic runs and passes.

* The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred.

Reference Information

Schematic Reference

Heated/Cooled Seat Schematics Electrical Diagrams

Connector End View Reference

Component Connector End Views Fuel Pump and Level Sensor Assembly

Description and Operation

* Heated/Vented Seat Description and Operation Heated/Vented Seat

* Rear Heated Seats Description and Operation Rear Heated Seats

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

Scan Tool Reference

Control Module References Control Module References for scan tool information

Circuit/System Verification

DTC B191A

1. Ignition ON.

2. Verify DTC B191A is not set.

• If the DTC is set
Replace the K29F Seat Heating Control Module - Front.

• If the DTC is not set

3. All OK.

DTC B191B

1. Ignition ON.

2. Verify DTC B191B is not set.

• If the DTC is set
Replace the K29R Seat Heating Control Module - Rear.

• If the DTC is not set

3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

Control Module References Control Module References for K29F Seat Heating Control Module - Front or K29R Seat Heating Control Module - Rear replacement, programming and setup