Inspection Procedure 1

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

Part 1:

Part 2:

CIRCUIT OPERATION
Power is supplied to the radio and CD player when the ignition switch is in the "ACC" position or "ON" position. When the ignition is switched on, the radio and CD player will return to the previous state when the ignition was switch off at the last time.

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

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

DIAGNOSIS

Required Special Tool:
- MB991223: Harness set

STEP 1. Check to see that the radio and CD player are energized when the power switch is turned ON.

1. Turn the ignition switch to "ACC" position.
2. Turn ON the radio and CD player power switch.

Q: Are the radio and CD player energized when the power switch is turned ON?

YES: Go to Step 2.

NO: Go to Step 5.




STEP 2. Check radio and CD player connector C-103 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q: Is radio and CD player connector C-103 in good condition?

YES: Go to Step 3.

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




STEP 3. Check the wiring harness between radio and CD player connector C-103 (terminal 11) and the battery.

NOTE: Also check intermediate connector C-129 and joint connector C-05 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-129 or joint connector C-05 is damaged, repair or replace the connector as described in Harness Connector Inspection.

Q: Is the wiring harness between radio and CD player connector C-103 (terminal 11) and battery in good condition?

YES: Go to Step 4.

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

STEP 4. Check the installation condition of the radio and CD player.

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: Repair or replace the radio and CD player. If the power switch is turned on, the radio and CD player should operate normally.

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




STEP 5. Check radio and CD player connector C-103 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q: Is radio and CD player connector C-103 in good condition?

YES: Go to Step 6.

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




STEP 6. Check the wiring harness between radio and CD player connector C-103 (terminal 10) and ignition switch (ACC).

NOTE: Also check intermediate connector C-129 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-129 is damaged, repair or replace the connector as described in Harness Connector Inspection.

Q: Is the wiring harness between radio and CD player connector C-103 (terminal 10) and ignition switch (ACC) in good condition?

YES: Go to Step 7.

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

STEP 7. Check the installation condition of the radio and CD player.

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: Repair or replace the radio and CD player. If the power switch is turned on, the radio and CD player should operate normally.

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