INSPECTION PROCEDURE 4: The System does not Recognize the Remote Controlled Radio Switch (LH) Only. < Vehicles with Seven Speakers >: Diagnosis

Required Special Tool: 

• MB991223: Harness set

1. STEP 1. Measure the resistance at remote controlled radio switch (LH). 
   1. Remove the airbag module (Refer to AIR BAG MODULE AND CLOCK SPRING < VEHICLES WITHOUT ADVANCED AIR BAG > or < VEHICLES WITH ADVANCED AIR BAG) >.
   2. Measure the resistance by operating the remote controlled radio switch (LH) in each position.
      Fig 1: Measuring Resistance By Operating Remote Controlled Radio Switch (LH)

      Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
      RESISTANCE REFERENCE
      
      

      SWITCH POSITION	MEASUREMENT VALUE
      No push	Open circuit
      Upper	Approximately 1.2 kΩ
      Center	Approximately 470 kΩ
      Lower	Approximately 3.3 kΩ

   Q: Is the resistance at the left remote controlled radio switch normal? 

   1. YES  : Go to Step 2.
   2. NO  : Replace the remote controlled radio switch (LH).
2. STEP 2. Check the radio switch (LH) connector C-311 and clock spring connector C-303 for loose, corroded or damaged terminals, or terminals pushed back in the connector. 
   Fig 2: Identifying Radio Switch (LH) Connector C-311 And Clock Spring Connector C-303

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

   Q: Is remote controlled radio switch (LH) connector C-311 and clock spring connector C-303 in good condition? 

   1. YES  : Go to Step 3.
   2. NO  : Repair or replace the connector. Refer to HARNESS CONNECTOR INSPECTION . The remote controlled radio switch (LH) should work normally.
3. STEP 3. Check the wiring harness between remote controlled radio switch connector C-311 (terminals1 and 2) and clock spring connector C-303 (terminals 4 and 5). 
   Fig 3: Identifying Radio Switch (LH) Connector C-311 And Clock Spring Connector C-303

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

   Q: Are the wiring harness between remote controlled radio switch connector C-311 (terminals 1 and 2) and clock spring connector C-303 (terminals 4 and 5) in good condition? 

   1. YES  : No action to be taken.
   2. NO  : Repair the wiring harness. The remote controlled radio switch (LH) should work normally.