Inspection Procedure 1

INSPECTION PROCEDURE 1: When power switch is turned "ON," no power is available.














CIRCUIT OPERATION

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

TECHNICAL DESCRIPTION (COMMENT)

The cause is probably a faulty radio and CD player or radio and CD player with CD changer power supply circuit.

TROUBLESHOOTING HINTS

- Damaged wiring harness or connector.
- Malfunction of the radio and CD player or radio and CD player with CD changer.

DIAGNOSIS

Required Special Tools:

- MB991223: Harness set
- MB992006: Extra Fine Probe

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

(1)Turn the ignition switch to "ACC" position.

(2)Turn ON the radio and CD player or radio and CD player with CD changer power switch.

Q. Is the radio and CD player or radio and CD player with CD changer 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 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. Are 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). Harness Connector Inspection.

STEP 3. Check the wiring harness between radio and CD player or radio and CD player with CD changer connector C-117 (terminal 10) and the ignition switch (ACC).









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 it. 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 10) and ignition switch (ACC) in good condition?

YES Go to Step 4.

NO Repair the wiring harness.

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

NOTE:
The radio and CD player or radio and CD player with CD changer are grounded to the deck crossmember directly.

Q. Are the radio and CD player or radio and CD player with CD changer installed correctly?

YES Repair or replace the radio and CD player or radio and CD player with CD changer.
NO Install the radio and CD player or radio and CD player with CD changer properly.
STEP 5. Measure at radio and CD player or radio and CD player with CD changer connector C-117 in order to check the battery circuit of power supply system to the radio and CD player or radio and CD player with CD changer (ignition switch ACC).





(1)Disconnect radio and CD player or radio and CD player with CD changer connector C-117, and measure at the wiring harness side.
(2)Turn the ignition switch to "ACC" position.





(3)Measure the voltage between terminal 10 and ground.

- The voltage should measure approximately 12 volts (battery positive voltage).

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

YES Go to Step 8.

NO Go to Step 6.

STEP 6. 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. Are radio and CD player or radio and CD player with CD changer connector C-117 in good condition?

YES Go to Step 7.

NO Repair or replace the damaged component(s). Harness Connector Inspection.

STEP 7. Check the wiring harness between radio and CD player or radio and CD player with CD changer connector C-117 (terminal 10) and ignition switch (ACC).









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 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 10) and ignition switch (ACC) in good condition?

YES Refer to ignition switch diagnosis Inspection Procedure.

NO Repair the wiring harness.

STEP 8. Check the installation condition of the radio and CD player or radio and CD player with CD changer.

NOTE:
The radio and CD player or radio and CD player with CD changer are grounded to the deck crossmember directly.

Q. Are the radio and CD player or radio and CD player with CD changer installed correctly?

YES Replace the radio and CD player or radio and CD player with CD changer.
NO Install the radio and CD player or radio and CD player with CD changer properly.