Inspection Procedure 1

When Power Switch is Turned "ON," No Power is Available.

Radio And CD Player Power Supply Circuit Part 1:

Radio And CD Player Power Supply Circuit Part 2:

CIRCUIT OPERATION
Power is supplied to the radio and CD player when the ignition switch is at the "ACC" or "ON" position.

TECHNICAL DESCRIPTION (COMMENT)
The cause is probably a faulty radio and CD player power supply circuit system.

TROUBLESHOOTING HINTS
- Damaged harness wire or connector
- Malfunction of the radio and CD player

DIAGNOSIS

Required Special Tool:
- MB991223: Harness set

STEP 1. Check the radio and CD player power supply circuit by backprobing.




1. Do not disconnect radio and CD player connector C-62.
2. Turn the ignition switch to the "ACC" position.




3. Measure the voltage between terminal 10 and ground by backprobing.
- The measured value should be approximately 12 volts (battery positive voltage).

Q: Does the measured voltage correspond with this range?

YES: Go to Step 4.

NO: Go to Step 2.




STEP 2. Check radio and CD player connector C-62 for damage.

Q: Is radio and CD player connector C-62 in good condition?

YES: Go to Step 3.

NO: Repair or replace it. Refer to Harness Connector Inspection. If the power switch is turned on, the radio and CD player should operate normally.













STEP 3. Check the harness wires between radio and CD player connector C-62 (terminal No.10) and ignition switch (ACC).

NOTE: After inspecting intermediate connector C-41, IOD or storage connector A-54X and junction block connectors D-06 and D-08, inspect the wire. If intermediate connector C-41, IOD or storage connector A-54X and junction block connectors D-06 and D-08 are damaged, repair or replace them. Refer to Harness Connector Inspection.

Q: Are the harness wires between radio and CD player connector C-62 (terminal No.10) and ignition switch (ACC) in good condition?

YES: There is no action to be taken.

NO: Repair them. If the power switch is turned on, the radio and CD player should operate normally.

STEP 4. Check that the radio and CD player are installed correctly.

NOTE: The radio and CD player are grounded to the instrument panel center reinforcement directly.

Q: Are the radio and CD player installed correctly?

YES: Go to Step 5.

NO: Install properly. If the power switch is turned on, the radio and CD player should operate normally.

STEP 5. Recheck for malfunction.

Q: Is a malfunction eliminated?

YES: The procedure is complete. (If no malfunctions are found in all steps, an intermittent malfunction is suspected. Refer to How to Use Troubleshooting/Inspection Service Point - How to Cope with Intermittent Malfunction.)

NO: Go to Step 1.