Diagnostic Procedure

STEP 1. Confirm the disk.
Confirm that the disk complies with the market specifications.

Q: Is the check result normal?
1. YES : Go to Step 2.
2. NO : Use a disk, which complies with the market specifications.
STEP 2. Confirm that the disk is inserted with its correct side facing up.
Confirm that the disk is inserted with its correct side facing up.

Q: Is the check result normal?
1. YES : Go to Step 3.
2. NO : Confirm the disc face, and insert it again. (If the disc is single-sided, its label should face up)
STEP 3. Confirm the disk.
Confirm that the disk is not contaminated or scratched.

Q: Is the check result normal?
1. YES : Go to Step 4.
2. NO : Clean the disk or use a clean disk.
STEP 4. Retest the system.
Check that the disk is played normally when it is inserted.

Q: Is the check result normal?
1. YES : The procedure is complete.
2. NO : Go to Step 5.
STEP 5. Connector check: D-36 rear disk play connector

Fig 1: Identifying D-36 Rear Disk Play Connector
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Q: Is the check result normal?
1. YES : Go to Step 6.
2. NO : Repair the defective connector.
STEP 6. Measure the voltage at rear display connector D-36.
1. Disconnect the connector, and measure at the wiring harness side.
  
  Fig 2: Identifying Rear Display Connector D-36
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2. Ignition switch: ACC
3. The voltage between rear display connector D-36 terminal No.1 and body ground
  1. OK: Battery positive voltage
    
    Fig 3: Meassuring Voltage Between Rear Display Connector D-36 Terminal No.1 And Body Ground
    Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Is the check result normal?
1. YES : Go to Step 8.
2. NO : Go to Step 7.
STEP 7. Check the DIN cable.
Check whether the DIN cable between the M-bus adapter and the radio/CD player is connected correctly.

Q: Is the check result normal?
1. YES : Go to Step 8.
2. NO : Replace the DIN cable.
STEP 8. Measure the resistance value at rear display connector D-36.
1. Disconnect the connector, and measure at the wiring harness side.
  
  Fig 4: Identifying Resistance Value Rear Display Connector D-36
  Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2. Resistance between rear display connector D-36 terminal No.2 and body ground
  1. OK: 2 Ω or less
    
    Fig 5: Measuring Resistance Between Rear Display Connector D-36 Terminal No.2 And Body Ground
    Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Q: Is the check result normal?
1. YES : Go to Step 10.
2. NO : Go to Step 9.
STEP 9. Check the wiring harness between rear display connector D-36 terminal No.2 and body ground.
- Check the ground wires for open circuit.
Fig 6: Identifying Rear Display Connector D-36 Harness Side
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Q: Is the check result normal?
1. YES : Retest the system.
2. NO : Repair the wiring harness.
STEP 10. Retest the system.
Check that the system plays sound and image normally.

Q: Is the check result normal?
1. YES : The trouble can be an intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
2. NO : If the system is operated via the main panel, replace the rear display unit assembly (overhead type). If the system is operated via the remote control, refer to INSPECTION PROCEDURE 4: The Remote Control does not Function. .