Video Entertainment System Remote Control Malfunction
Video Entertainment System Remote Control Malfunction
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 provide an overview of each diagnostic category.
Diagnostic Fault Information
Circuit Description
The infrared transmitter is grounded and powered by the rear seat audio (RSA) module. When a key on the remote is pressed, the remote control sends an infrared message to infrared transmitter. The infrared transmitter will convert these infrared signals into a frequency and send that message to the radio via the remote infrared signal circuits (+) and (-).
Reference Information
Schematic Reference
Radio/Navigation System Schematics Radio/Navigation System Schematics
Connector End View Reference
Component Connector End Views A/C Compressor Clutch
Description and Operation
Video Entertainment System Description and Operation (Non-Headrest DVD Systems) Video Entertainment System (Non-Headrest DVD Systems)Video Entertainment System Description and Operation (Dual Headrest DVD Systems) Video Entertainment System (Dual Headrest DVD Systems)
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 Verification
Ignition ON, Radio ON, DVD playing, when aiming the remote control at the infrared transmitter, you will see LED's to indicate activity.
Circuit/System Testing
Note:
Test or replace the remote batteries before performing the circuit/system test.
1. Ignition OFF, disconnect the harness connector at the infrared transmitter.
2. Test for less than 10 ohms between the ground circuit terminal 12 and ground.
• If greater than specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, DVD playing, test for B+ between the signal circuit terminal 4 and ground.
• If less than specified value, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio/HVAC control-auxiliary module.
4. Ignition ON, DVD playing, test for 0.75-2 V between the signal (+) circuit terminal 8 and ground.
• If less than specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio.
• If greater than specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
5. Ignition ON, DVD playing, test for less than 1 V between the signal (-) circuit terminal 16 and ground.
• If greater than specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
6. Reconnect the harness connector at the infrared transmitter, and disconnect the X3 harness connector at the radio.
7. Ignition ON, DVD playing, test for 4-6 mV AC between the signal (+) circuit terminal 5 and ground.
• If less than specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the infrared transmitter.
• If greater than specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the infrared transmitter.
8. Ignition ON, DVD playing, test for 4-6 mV AC between the signal (-) circuit terminal 13 and ground.
• If less than specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the infrared transmitter.
• If greater than specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the infrared transmitter.
9. Ignition ON, DVD playing, press any button on the remote control aimed at the infrared transmitter and test for 300-330 MHz between the signal (+) circuit terminal 5 and ground.
• If not within the specified range, replace the remote control.
10. If all circuits test normal, replace the radio.
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 Control Module References for radio replacement, setup, and programming