B1380

DTC B1380

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 Descriptor
DTC B1380 59
- Device Ignition ACCESSORY Circuit Protection Time-out

Circuit/System Description

The instrument panel module (IPM) is the power mode master and the remote control door lock receiver (RCDLR) is the backup power mode master. Both modules receive information regarding ignition mode switch position from the ignition mode switch. IPM receives ignition mode switch position data through the IPM ignition mode data signal circuit.

Conditions for Running the DTC

Voltage supplied to the module is in the normal operating voltage range of 9-16 V.

Conditions for Setting the DTC

The IPM sets the code if it detects that the OFF/ACC contact of the ignition mode switch is closed for more than 30 seconds.

Action Taken When the DTC Sets

The IPM does not react to switch inputs of equal or lower priority until condition is cleared.

Conditions for Clearing the DTC

* A current DTC clears when the malfunction is no longer present.
* A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.

Reference Information
Schematic Reference

Power Distribution Schematics (Power Distribution Schematics)
Connector End View Reference

Component Connector End Views (Connector End Views By Name)
Description and Operation

Power Mode Description and Operation (Power Mode)
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 (Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition OFF, disconnect the harness connector at the ignition mode switch.
2. Ignition OFF, test for less than 5 Ohms of resistance between the ignition mode switch pin E and F.

• If not the specified range, replace the ignition mode switch.

3. Ignition OFF, test for 270 Ohms of resistance between the ignition mode switch pin E and F with the OFF/ACC button pressed.

• If not the specified value, replace the ignition mode switch.

4. If all circuits test normal, replace the IPM.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

Control Module References (Programming and Relearning) for IPM replacement, programming, and setup.