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 B1319 04: Immobiliser Receiver Circuit Malfunction

### Circuit/System Description

When a remote key is inserted into the ignition lock cylinder and the ignition is turned ON, the transponder embedded in the remote key is energized by the exciter coils located in the theft deterrent module (TDM) surrounding the ignition lock cylinder. The energized transponder transmits a signal that contains its unique value, which is received by the TDM. The TDM is directly secured to the steering column module (CIM). The CIM compares this unique value to a value stored in memory. If the value is correct, the CIM will request vehicle starting.

### Conditions for Running the DTC

Ignition ON

### Conditions for Setting the DTC

A circuit fault is detected in the theft deterrent module

### Action Taken When the DTC Sets

• | Vehicle starting is disabled

• | The Service Vehicle Soon lamp will flash and/or the Safeguard Check message is displayed on the driver information center (DIC)

### Conditions for Clearing the DTC

• | A current DTC will clear when the conditions for setting the DTC are no longer seen.

• | A history DTC will clear after 100 malfunction free ignition cycles.

### Diagnostic Aids

The TDM is directly secured to the CIM. There is no wiring harness connecting the two modules, nor are there any circuits to diagnose.

### Reference Information

#### Schematic Reference

Immobilizer Schematics

#### Connector End View Reference

Component Connector End Views

#### Description and Operation

Immobilizer Description and Operation

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

#### Scan Tool Reference

Control Module References for scan tool information

### Circuit/System Verification

Verify that DTC B1319 is not set.

⇒ | If the DTC is set, replace the theft deterrent module. If the DTC resets, replace the CIM.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

• | Theft Deterrent Module Replacement

• | Control Module References for CIM replacement, programming, and setup