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 provide an overview of each diagnostic category. |
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Right Auxiliary Audio Signal | 1 | 1 | 1 | -- |
Left Auxiliary Audio Signal | 2 | 2 | 2 | -- |
Auxiliary Audio Common Ground | -- | 1, 2 | -- | -- |
Auxiliary Video Ground | -- | 3 | -- | -- |
Auxiliary Video High Signal | 3 | 3 | 3 | -- |
1. No or distorted right side audio 2. No or distorted left side audio 3. No or distorted video | ||||
Circuit/System Description
The audio/video adaptor allows the connection of audio and video signals from an external device such as a camcorder, video game console or MP3 player to the TV antenna module, that passes the signals on to the navigation radio. The middle jack is for left audio (white), the right jack is for right audio (red), and the left jack is for video (yellow). The system requires standard RCA cables to connect your external device to the RCA jacks. The auxiliary audio and video circuits are connected to the TV antenna module.
Diagnostic Aids
Verify the external audio or video device is operating normally before performing this diagnostic procedure.
Reference Information
Schematic Reference
Radio/Navigation System Schematics
Connector End View Reference
Entertainment/Communication Connector End Views
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
Important: Verify the DVD player in the radio is operating normally before performing this diagnostic procedure. If there is any problems with operating the DVD player with a known good DVD, replace the Navigation Radio. Also, verify the TV system in operating properly, if TV tuner is poor or inoperative, refer to Navigation System - Poor or Inoperative TV Reception.
- Ignition OFF, disconnect the harness connector at the TV antenna module.
- Ignition ON, test for less then 1 volt between the appropriate signal circuit terminals listed below and ground.
- Test for infinite resistance between the terminals listed below and ground.
- Test for less then 5 ohm between the terminals on the TV antenna module harness connector and the external terminals on the audio/video adaptor listed below:
- If all circuits test normal, replace the TV antenna module.
| • | Auxiliary audio left signal (+) - terminal 47 |
| • | Auxiliary audio right signal (+) - terminal 48 |
| • | Drain wire (-) - terminal 49 |
| • | Auxiliary video signal (+) - terminal 52 |
| • | Drain wire (+) - terminal 53 |
| ⇒ | If greater then specified range, test the circuit for a short to voltage. |
| • | Auxiliary audio left signal (+) - terminal 47 |
| • | Auxiliary audio right signal (+) - terminal 48 |
| • | Drain wire (-) - terminal 49 |
| • | Auxiliary video signal (+) - terminal 52 |
| • | Drain wire (+) - terminal 53 |
| ⇒ | If less then the specified value, test the circuit for a short to ground. |
| • | Auxiliary audio left signal (+) - terminal 47 and the inside of the center (white) jack |
| • | Auxiliary audio right signal (+) - terminal 48 and the inside of the right (red) jack |
| • | Auxiliary audio drain wire (-) - terminal 49 and the outside of both the center (white), and the right (red) jacks |
| • | Auxiliary video signal (+) - terminal 52 and the inside of the left (yellow) jack |
| • | Auxiliary video drain wire (+) - terminal 53 and the outside of the left (yellow) jack |
| ⇒ | If greater then the specified value, test the circuit for an open/high resistance. If the circuit tests normal, replace the adaptor. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
