2010 Cadillac Truck SRX FWD V6-3.0L Page 446

2010 Cadillac Truck SRX FWD V6-3.0L Page 446

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 brightness 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 full brightness.

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 (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/Video System Schematics)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Video Entertainment System Description and Operation (Non-Headrest DVD Systems) (See: Accessories and Optional Equipment/Description

and Operation/Video Entertainment System (Non-Headrest DVD Systems))Video Entertainment System Description and Operation (Dual Headrest

DVD Systems) (See: Accessories and Optional Equipment/Description and Operation/Video Entertainment System (Dual Headrest DVD

Systems))Video Entertainment System Description and Operation (Seatback Display) (See: Accessories and Optional Equipment/Description and

Operation/Video Entertainment System (Seatback Display))

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information

Circuit/System Verification

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

瀚慖f one of both of the seatback video displays brightness level cannot be controlled, refer to Circuit/System Testing.

2. Verify that DTC B1289 is NOT set as current.

瀚慖f DTC B1289 is set as current, refer to Circuit/System Testing.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connectors at both of the P22 seatback video displays.

2. Ignition ON, DVD playing, test for 190-210 HZ DC between the video brightness control circuit terminal 16 and ground at each of the P22

seatback video displays.

瀚慖f 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.

3. Ignition OFF, reconnect the harness connector at the P22E driver seatback video display.

4. Ignition ON, DVD playing, test for 190-210 HZ DC between the video brightness control circuit terminal 16 and ground at the P22F

passenger seatback video display.

瀚慖f not within the specified range, replace the P22E driver seatback video display.

5. If all circuits test normal, replace the P22F passenger seatback video display.