Video Entertainment System Wireless Headphone Inoperative
Video Entertainment System Wireless Headphone Inoperative
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provide an overview of each diagnostic category.
Diagnostic Fault Information
Circuit Description
The rear seat entertainment (RSE) system consists of two, 2-channel wireless headphones that are dedicated to the system. Channel 1 is dedicated to the video screen, while 2 is dedicated to rear seat audio (RSA) selections. The infrared module receives voltage from the rear audio/HVAC module when the RSA in ON. For DVD audio playback, the infrared module recieves audio inputs directly from the radio. For all other audio sources, the radio audio signals are sent to the rear audio/HVAC modul,whichthen provides those audio inputs to the infrared module to be broadcast to the headphones.
Reference Information
Schematic Reference
Video System Schematics (Video System Schematics)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
Video Entertainment System Description and Operation (Non-Headrest DVD Systems) (Video Entertainment System Description and Operation (Non-Headrest DVD Systems))
Electrical Information Reference
* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)
Scan Tool Reference
Control Module References (Programming and Relearning) for scan tool information
Circuit/System Verification
Important: Center the balance and fade adjustment on the radio. If adjustment of the fade and balance eliminates the concern, review the operation of the radio with the customer.
1. Turn ON the wireless headphones. Verify the power indicator lamp on the wireless headphone illuminates.
• If the power indicator lamp does not illuminate, test or replace the wireless headphone batteries. If the batteries are OK replace the appropriate wireless headphone.
2. Radio ON, RSA ON, and DVD playing, verify audio is heard through all of the wireless headphones.
• If all of the headphones are inoperative, or the sound is distorted, refer to Circuit/System Testing.
• If only one of the headphones is not producing sound, or the sound is distorted, replace the appropriate wireless headphone.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the infrared transmitter.
2. Ignition OFF, test for less than 5 Ohms between the ground circuit terminal 12 and ground.
• If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, RSA ON, test for B+ between the control circuit terminal 4 and ground.
• If less than the specified value, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear audio/HVAC module.
4. Ignition ON, DVD playing, test for AC voltage between the signal circuit terminals listed below and ground.
* Left DVD audio signal (+) - terminal 1
* DVD audio common (-) - terminal 2
* Right DVD audio signal (+) - terminal 3
• If AC voltage is not present, test the signal circuit for a short to voltage, short to ground, or an open/high resistance. If the circuit tests normal, replace the radio.
5. Ignition ON, RSA ON, test for AC voltage between the signal circuit terminals listed below and ground.
* Left infrared audio signal (+) - terminal 9
* Infra red audio low reference (-) - terminal 10
* Right infrared audio signal (+) - terminal 11
• If AC voltage is not present, test the signal circuit for a short to voltage, short to ground, or an open/high resistance. If the circuit tests normal, replace the rear audio/HVAC module.
6. If all circuits test normal, test or replace the infrared transmitter.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Audio System Transceiver Module Replacement (U42) (Audio System Transceiver Module Replacement (U42))Audio System Transceiver Module Replacement (U42/C3U) (Audio System Transceiver Module Replacement (U42/C3U))
* Control Module References (Programming and Relearning) for Rear Audio/HVAC module replacement, setup, and programming