B1265

DTC B1265

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 B1265 01

-
Switched 14 Volt Performance Short to Battery

DTC B1265 02

-
Switched 14 Volt Performance Short to Ground

Circuit/System Description

When the radio is on, a discrete 12 V signal is supplied on the entertainment remote enable circuit to the Audio Amplifier, Navigation Info Display and Display Actuator (if equipped), and the Seatback Video Displays (if equipped). This signal is used to control the power state of the components.

Conditions for Running the DTC

The following are conditions that must be present in order for the radio to enable diagnostics:

* The radio is ON.

* The system voltage is 9-16 V

Conditions for Setting the DTC

B1265 01

* The radio detects a short to voltage on the entertainment remote enable circuit.

* The above condition is present for greater than 250 mS.

B1265 02

* The radio detects a short to ground on the entertainment remote enable circuit circuit.

* The above condition is present for greater than 250 mS.

Action Taken When the DTC Sets

* The radio implements a current limiting mode and disables the output on the entertainment remote enable circuit.

* All components connected on the entertainment remote enable circuit will be inoperative.

Conditions for Clearing the DTC

* The condition for setting the DTC no longer exists.

* After the ignition has been OFF for a sufficient amount of time to allow the radio to enter a low power/sleep state, the radio will re-enable the output on the following ignition cycle and the DTC will become history.

* A history DTC clears after 50 malfunction-free ignition cycles.

Diagnostic Aids

* This DTC may be stored as a history DTC without affecting the operation of the radio/infotainment systems.

* The radio's current limiting logic will not re-enable the output on the entertainment remote enable circuit until after the radio performs a full power-down. It may be necessary to wait 5 minutes with the key OFF and retained accessory power OFF for the radio to re-enable this output.

Reference Information

Schematic Reference

* Radio/Navigation System Schematics Radio/Navigation System Schematics

* Video System Schematics Video System Schematics

Connector End View Reference

Component Connector End Views 1-2 Shift Solenoid (SS) Valve (M30)

Description and Operation

Navigation System Description and Operation Navigation System

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 Control Module References for scan tool information

Circuit/System Testing

B1265 01

1. Ignition OFF, radio OFF, radio B+ fuse removed, disconnect all of the connectors listed below:

* Audio Amplifier X3

* Video Display (if equipped)

2. Reinstall the radio B+ fuse. Ignition OFF, radio OFF, verify that a test lamp does not illuminate between the entertainment remote enable circuit terminals listed below and ground:

* Audio Amplifier X3 terminal 8

* Video Display terminal 8 (if equipped)

• If the test lamp illuminates, test the entertainment remote enable circuit for a short to voltage. If the circuit tests normal replace the radio.

3. Re-connect the harness connectors listed below one at a time. Verify that DTC B1265 01 does NOT set as current as each component is re-connected.

* Audio Amplifier X3

* Video Display (if equipped)

• If DTC B1265 01 sets as current, replace the module/component that was just re-connected.

B1265 02

1. Ignition OFF, radio OFF, radio B+ fuse removed, disconnect all of the connectors listed below:

* Audio Amplifier X3

* Video Display (if equipped)

2. Reinstall the radio B+ fuse. Ignition ON, radio ON, verify that a test lamp illuminates between the entertainment remote enable circuit terminals listed below and ground:

* Audio Amplifier X3 terminal 8

* Video terminal 8 (if equipped)

• If the test lamp does not illuminate, test the entertainment remote enable circuit for a short to ground or an open/high resistance. If the circuit tests normal replace the radio.

3. Re-connect the harness connectors listed below one at a time. Verify that DTC B1265 02 does NOT set as current as each component is re-connected.

* Audio Amplifier X3

* Video Display (if equipped)

• If DTC B1265 02 sets as current, replace the module/component that was just re-connected.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

* Video Display Replacement (Second Row) Service and Repair

* Control Module References Control Module References for radio and amplifier replacement, programming and setup