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 Descriptors

DTC B3109 00: Remote-Key 1 System Voltage Low Voltage
DTC B3110 00: Remote-Key 2 System Voltage Low Voltage
DTC B3111 00: Remote-Key 3 System Voltage Low Voltage
DTC B3112 00: Remote-Key 4 System Voltage Low Voltage
DTC B3113 00: Remote-Key 5 System Voltage Low Voltage

### Circuit/System Description

With each press of a remote-key button, a message containing the current battery state of the remote-key is sent to the steering column module (CIM) along with the commanded keyless entry function.

### Conditions for Running the DTC

A remote-key button is pressed.

### Conditions for Setting the DTC

The DTC sets after 3 consecutive low battery signals from the same programmed remote-key.

### Action Taken When the DTC Sets

The keyless entry system is inoperative.

### Conditions for Clearing the DTC

The DTC is cleared when a normal remote-key voltage signal is received from the programmed transmitter that set the DTC.

### 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

### Circuit/System Verification

Verify none of the following DTCs are set:

• | DTC B3109

• | DTC B3110

• | DTC B3111

• | DTC B3112

• | DTC B3113

⇒ | If any of the DTCs are set, replace the battery in the appropriate remote-key. Operate the remote-key 3 consecutive times. If the DTC resets, replace the remote-key.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Replacing Keys