Inspection Procedure A-7: The position lamp does not illuminate.


caution Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM


If all the position lamps do not illuminate normally, the tail lamp switch input circuit or the ETACS-ECU may have a problem.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code.
When the ignition switch is turned to the "LOCK" (OFF) position, check that the ETACS-ECU does not set the diagnosis code.

Q. Is the diagnosis code set?
Refer to diagnosis code chart .
Go to Step 2.

STEP 2. M.U.T.-III data list
Check the input signal from the tail lamp switch.

  • Operate the tail lamp switch.
Item No.
 Item name
 Normal condition
59
 Tail lamp output
 ON
OK: Normal conditions is displayed

Q. Is the check result normal?
Go to Step 3.
Refer to inspection procedure 9 "The column switch signal is not received ."

STEP 3. Retest the system.
Check that all the position lamps illuminate normally.

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 ETACS-ECU (Refer to ).