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 B3105: Keyless Entry System Key Fobs Not Programmed

### Circuit/System Description

The remote control door lock receiver (RCDLR) monitors the number of keyless entry transmitters programmed. Until at least one transmitter is programmed, the RCDLR determines a malfunction condition exists.

### Conditions for Running the DTC

The keyless entry system must be enabled and a test is ran every time the key is cycled.

### Conditions for Setting the DTC

The DTC is set if there are no keyless entry transmitter programmed to the RCDLR.

### Action Taken When the DTC Sets

The keyless entry system is inoperative.

### Conditions for Clearing the DTC

A current DTC is cleared at least one transmitter has been programmed to the RCDLR.

### Reference Information

#### Schematic Reference

Remote Function Schematics

#### Connector End View Reference

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

#### Scan Tool Reference

Control Module References for scan tool information

#### Special Tools

J 43241 Keyless Enter Tester

### Circuit/System Verification

Attempt to program the keyless entry transmitter, refer to Transmitter Programming . The transmitter should program.

### Circuit/System Testing

1. Verify that the transmitter is the correct transmitter for the vehicle.

⇒ | If not correct, replace the transmitter.

2. Place the transmitter on the test pad of the J 43241 and press each button of the transmitter one at a time. The tester should sound a tone and illuminate a green light when each button is pressed.

⇒ | If one or more buttons does not sound the tone and illuminate the green light, replace the transmitter battery and retest with the J 43241 . If the condition continues after battery replacement, replace the transmitter.

3. Attempt to program the transmitter, refer to Transmitter Programming . The transmitter should program.

⇒ | If the transmitter does not program, replace the RCDLR.

### Repair Instructions

Important: This vehicle may be equipped with the 2 Way Advanced Remote Start System. Vehicle equipped with the 2 Way Advanced Remote Start System can be identified by an LCD screen on the keyless entry transmitter or a yellow label on the RCDLR. When servicing the 2 Way Advanced Remote Start System, ensure that the correct parts are installed during replacement. Service parts for the 2 Way Advanced Remote Start System can be found in the Accessory section of the parts manual.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for RCDLR replacement, setup, and programming