INSPECTION PROCEDURE 23: Radio: Preset stations are erased: Diagnosis

Required Special Tools: 

• MB991223: Harness set
• MB992006: Extra Fine Probe

1. STEP 1. Measure at radio and CD player or radio and CD player with CD changer connector C-117 in order to check the power supply circuit to the radio and CD player or radio and CD player with CD changer (through the battery). 
   1. Disconnect radio and CD player or radio and CD player with CD changer connector C-117, and measure at the wiring harness side.
      Fig 1: Identifying Connector C-117 Terminals

      Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   2. Measure the voltage between terminal number 11 and ground.
      • The voltage should measure approximately 12 volts (battery positive voltage).

   Q: Is the measured voltage approximately 12 volts (battery positive voltage) ? 

   YES:  Replace the radio and CD player or radio and CD player with CD changer. Check that a memory is retained.

   NO:  Go to Step  2.

   Fig 2: Measuring Voltage Between Terminal Number 11 And Ground

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2. STEP 2. Check radio and CD player or radio and CD player with CD changer connector C-117 for loose, corroded or damaged terminals, or terminals pushed back in the connector. 

   Q: Is radio and CD player or radio and CD player with CD changer connector C-117 in good condition? 

   YES:  Go to Step  3.

   NO:  Repair or replace the component(s). Refer to HARNESS CONNECTOR INSPECTION . Check that a memory is retained.

   Fig 3: Identifying Connector C-117 Terminals

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. STEP 3. Check the wiring harness between radio and CD player or radio and CD player with CD changer connector C-117 (terminal 11) and the battery. 
   Fig 4: Identifying Connector C-117 Terminals

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   NOTE: Also check intermediate connector C-24 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-24 is damaged, repair or replace the connector as described in HARNESS CONNECTOR INSPECTION .

   Q: Is the wiring harness between radio and CD player or radio and CD player with CD changer connector C-117 (terminal 11) and the battery in good condition? 

   YES:  Repair or replace the radio and CD player or radio and CD player with CD changer. Check that a memory is retained.

   NO:  Repair the wiring harness. Check that a memory is retained.

   Fig 5: Identifying Connector A-24 Terminals

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.