For 1990-2009 cars

### Diagnostic Instructions

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

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

• | Diagnostic Procedure Instructions provides an overview of each diagnostic category.

### DTC Descriptor

DTC B3106 00: Keyless Entry Data Link Parity Error

### Circuit/System Description

The remote function receiver module receives a signal from the keyless entry transmitters when a button is pressed; it then sends the request to the BCM.

### Conditions for Setting the DTC

The BCM detects an invalid message from the remote function receiver module; a message with a parity error. This indicates an internal fault within the remote function receiver module.

### Action Taken When the DTC Sets

No action is taken.

### Conditions for Clearing the DTC

• | A current DTC will clear when the fault is no longer present and the ignition switch is cycled.

• | The history DTC will clear after 100 consecutive ignition cycles without a fault present.

• | A scan tool may be used to clear history and current DTCs.

### Reference Information

#### Schematic Reference

Remote Function Schematics

#### Component Connector End Views

Component Connector End Views

#### Description and Operation

Keyless Entry System Description and Operation

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

### Circuit/System Testing

1. With a valid transmitter, press a button on the transmitter.
2. Verify that DTC B3106 is set.
3. Replace the K84 remote function receiver module.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for remote function receiver module replacement, setup, and programming