Inspection Procedure 1: Power of the radio and CD player does not turn ON when the ignition switch is in the "ACC" position or "ON" position. <Vehicles without Auto Stop & Go (AS&G) System>


caution Before replacing the radio and CD player, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

OPERATION



COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSES



  • Malfunctions of radio and CD player
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III other system diagnosis code
Check if the diagnosis code is set to the ETACS-ECU.

Q. Is the check result normal?
Troubleshoot the ETACS-ECU. Refer to ETACS-ECU - Troubleshooting .
Go to Step 2.

STEP 2. M.U.T.-III other system data list
Check the input signal of ACC relay.

  • Turn the ignition switch to the ACC position.
Item No.
 Item name
 Normal condition
Item 288
 ACC switch
 ON
OK: Normal condition is displayed.

Q. Is the check result normal?
Go to Step 3.
Refer to ETACS - Input Signal Procedure 1 "The ignition switch (ACC) signal is not sent to the ETACS-ECU" .

STEP 3. Connector check: C-103 radio and CD player connector, C-415 ETACS-ECU connector

Q. Is the check result normal?
Go to Step 4.
Repair the defective connector.

STEP 4. Voltage measurement at C-103 radio and CD player connector.
(1)Disconnect the connector, and measure at the wiring harness-side connector.
(2)Turn the ignition switch to the ACC position.
(3)Voltage between C-103 radio and CD player connector terminal No.30 and the body earth
OK: System voltage

Q. Is the check result normal?
Go to Step 6.
Go to Step 5.

STEP 5. Check the wiring harness between C-103 radio and CD player connector terminal No.21 and C-415 ETACS-ECU connector terminal No.9

  • Check the power supply line (battery power supply) for open circuit.
note Prior to the wiring harness inspection, check joint connector C-231, and repair if necessary.

Q. Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
Repair the wiring harness.

STEP 6. Voltage measurement at C-103 radio and CD player connector.
(1)Disconnect the connector, and measure at the wiring harness-side connector.
(2)Voltage between C-103 radio and CD player connector terminal No.30 and the body earth
OK: System voltage

Q. Is the check result normal?
Go to Step 8.
Go to Step 7.

STEP 7. Check the wiring harness between C-103 radio and CD player connector terminal No.30 and fusible link (36) <Petrol> or (38) <Diesel>

  • Check the power supply line (battery power supply) for open circuit.
note Prior to the wiring harness inspection, check joint connector C-231 <Vehicles for Russia> and intermediate connector C-127 <Except vehicles for Russia>, C-128 <Except vehicles for Russia>, ETACS-ECU connector C-406 and C-417, and repair if necessary.

Q. Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
Repair the wiring harness.

STEP 8. Check the wiring harness between C-103 radio and CD player connector terminal No.40 and body earth

  • Check the earth wires for open circuit.

Q. Is the check result normal?
Go to Step 9.
Repair the wiring harness.

STEP 9. Check that the radio and CD player is correctly earthed the radio and CD player should be connected to the earth with an assembly screw.

Q. Is the radio and CD player correctly earthed?
Go to Step 10.
Securely install and earth the radio and CD player.

STEP 10. Retest the system
Check if the radio and CD player power is turned ON.

Q. Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
Replace the radio and CD player.