Inspection Procedure 4

INSPECTION PROCEDURE 4: The System does not Recognize the Remote Controlled Radio Switch (LH) Only.[Vehicles with Audio Amplifier]

CIRCUIT OPERATION
Refer to Inspection Procedure 2. Inspection Procedure 2

TECHNICAL DESCRIPTION (COMMENT)
Refer to Inspection Procedure 2. Inspection Procedure 2

TROUBLESHOOTING HINTS
Refer to Inspection Procedure 2. Inspection Procedure 2

DIAGNOSIS
Required Special Tool:
- MB991223: Harness set

STEP 1. Measure the resistance at remote controlled radio switch (LH).

1. Remove the airbag module assembly.







2. Measure the resistance by operating the remote controlled radio switch (LH) in each position.







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

YES : Go to Step 2.

NO : Replace the remote controlled radio switch (LH).

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.







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

YES : Go to Step 3.

NO : Repair or replace the connector. The remote controlled radio switch (LH) should work normally.

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).







- Check the wiring harness for open circuit and short circuit.

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?

YES : No action to be taken.

NO : Repair the wiring harness. The remote controlled radio switch (LH) should work normally.