Inspection Procedure 3: Even when the selector lever is in the P position, the ignition switch cannot be turned to the LOCK (OFF) position. /When the selector lever is in other than the P position, the ignition switch can be turned to the LOCK (OFF) position.


COMMENTS ON TROUBLE SYMPTOM


The mechanical steering lock controls the steering lock solenoid, so that the steering lock cylinder turns from ACC to LOCK only when the selector lever is in the P position. If the steering lock cylinder does not turn from ACC to LOCK even when the selector lever is in the P position, or if the steering lock cylinder turns from ACC to LOCK when the selector lever is in other than the P position, the steering lock solenoid, selector lever assembly, wiring harness, or connector may have a problem.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III other system service data



Item No.
 Item name
 Normal condition
Item 288
 ACC switch
 ON
OK: Normal conditions are displayed for item.

Q. Is the check result normal?

Go to Step 2.

Troubleshoot the ETACS-ECU. Refer to Inspection Procedure 1 "The ignition switch (ACC) signal is not received" .

STEP 2. Voltage measurement at selector lever assembly connector


(1)Disconnect the connector, and measure at the wiring harness side.
(2)Turn the ignition switch from "ACC" position.
(3)Check the voltage between the selector lever assembly connector (power supply terminal) and body earth.
OK: System voltage

Q. Is the check result normal?

Go to Step 4.

Go to Step 3.

STEP 3. Check of short to power supply, short to earth, and open circuit in ACC1 line between selector lever assembly connector and ETACS-ECU connector


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 connector(s) or wiring harness.

STEP 4. Resistance measurement at selector lever assembly connector.


(1)Disconnect the connector, and measure at the wiring harness side.
(2)Measure the resistance between the selector lever assembly connector (earth terminal) and body earth.
OK: Continuity exists (2 Ω or less)

Q. Is the check result normal?

Go to Step 6.

Go to Step 5.

STEP 5. Check of open circuit in earth line between selector lever assembly connector and body earth.


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 connector(s) or wiring harness.

STEP 6. Steering lock solenoid check


Refer to GROUP 37 - Steering column shaft assembly .

Q. Is the check result normal?

Go to Step 7.

Replace the steering lock solenoid.

STEP 7. Resistance measurement at steering lock solenoid connector.


(1)Disconnect the connector, and measure at the wiring harness side.
(2)Measure the resistance between the steering lock solenoid connector (earth terminal) and body earth.
OK: Continuity exists (2 Ω or less)

Q. Is the check result normal?

Go to Step 9.

Go to Step 8.

STEP 8. Check of open circuit in earth line between steering lock solenoid connector and body earth.


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 connector(s) or wiring harness.

STEP 9. Check of short to power supply, short to earth, and open circuit in signal line between selector lever assembly connector and steering lock solenoid connector.


Q. Is the check result normal?

Go to Step 10.

Repair the connector(s) or wiring harness.

STEP 10. Retest the system


Check that the ignition switch can be turned to the LOCK (OFF) position when the selector lever is in the P position. Or, check that the ignition switch cannot be turned to the LOCK (OFF) position when the selector lever is in other than the P position.

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 selector lever assembly.