Inspection Procedure
4: The rear display unit sound is not output from the speaker.
caution
Whenever the rear display unit is replaced, ensure
that the communication circuit is normal.
COMMENTS ON TROUBLE SYMPTOM
The wiring harness between the multivision display and the rear display unit, the multivision
display, the rear display unit may have a problem.
PROBABLE CAUSES
The rear display unit may be defective
The multivision display may be defective
Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
STEP 1. Check of short to power supply, short to earth,
and open circuit in VAL+ and VAR+ line between rear display unit connector
and multivision display connector.
Q.
Is the check result normal?
Go to Step 2.
Repair the connector(s) or wiring harness.
STEP 2. Retest the system.
Check if the rear display unit sound is output from the speaker.
Q.
Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How
to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).