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DTC B1288

DTC B1288

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 B1288 01

Video Display Mode Control Signal Short to Battery

DTC B1288 02

Video Display Mode Control Signal Short to Ground

DTC B1288 04

Video Display Mode Control Signal Open Circuit

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Video Display B+ 2 1 - -
Remote Enable Control Circuit B1265 02, 3 4 5 -
DVD Audio Common Signal (-) 6 6 6 -
Left DVD Audio Signal (+) 7 7 7 -
Right DVD Audio Signal (+) 8 8 8 -
DVD Video Signal (+) 9 9 7 -
DVD Video Signal (-) 9 9 9, 10 -
Infrared Remote Signal (+) 11 11 11 -
Infrared Remote Signal (-) 11 11 11 -
Video Mode Signal B1288 02, 12 B1288 04, 12 B1288 01, 12 -
Video Bright Signal B1289 02, 13 B1289 04, 13 B1289 01, 13 -
Ground Terminal 8 - 1 - -
Ground Terminal 14 - 1 - -
1. One or both seatback displays inoperative 2. Both seatback displays inoperative 3. All infotainment devices controlled by circuit inoperative, no sound from speakers 4. One or more infotainment devices controlled by circuit inoperative 5. Power state of all infotainment devices controlled by circuit cannot be controlled by radio 6. No or distorted audio heard in wireless headphones 7. No or distorted left channel audio heard in wireless headphones 8. No or distorted right channel audio heard in wireless headphones 9. No or distorted image in seatback display 10. Serious damage to radio can occur 11. Infrared remote control inoperative 12. Seatback display mode cannot be controlled/changed 13. Seatback display brightness cannot be controlled/adjusted


Circuit/System Description

The radio can command the seatback video display mode on vehicles equipped with rear seat entertainment (RSE) video. The radio utilizes discreet mode control circuits to each display to control the screen display mode via a pulse width modulated signal. If the display screen does not receive a signal, the display screen will operate in a default full screen mode.

Conditions for Running the DTC


Ignition ON.

Battery voltage must be between 9-16 volts.


Conditions for Setting the DTC

The DTC will set when the radio detects a short to voltage, short to ground, or an open/high resistance in the video display mode control circuit 400 ms after the radio activates the remote enable circuit.

Action Taken When the DTC Sets

The radio sets the DTC and defaults the video display to normal mode.

Conditions for Clearing the DTC


The condition responsible for setting the DTC no longer exists.

A history DTC will clear once 100 consecutive malfunction-free ignition cycles have occurred.


Reference Information

Schematic Reference

Video System Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Video Entertainment 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


1. Ignition ON, Radio ON, DVD playing, use the infrared remote control to change the display mode of the seatback video displays.

2. If one of both of the seatback video displays mode setting cannot be controlled, refer to Circuit/System Testing.

3. Verify that DTC B1288 is NOT set as current.

4. If DTC B1288 is set as current, refer to Circuit/System Testing.


Circuit/System Testing


1. Ignition OFF, disconnect the harness connector at the appropriate P22 seatback video display.

2. Ignition ON, DVD playing, test for 190-210 HZ DC between the video mode control circuit terminal 15 and ground.

3. If not within the specified range, test the control circuit for a short to voltage, short to ground, or an open/high resistance. If the circuit tests normal, replace the radio.

4. If all circuits test normal, replace the P22 rear video display.


Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.


Video Display Replacement

Control Module References for Radio replacement, setup, and programming