Inspection Procedure N-3

INSPECTION PROCEDURE N-3: Theft-alarm system: Headlights (high-beam) do not flash when the theft-alarm system is triggered.

TECHNICAL DESCRIPTION (COMMENT)
If the headlights (high-beam) work normally, the front-ECU or the ETACS-ECU may be defective.

TROUBLESHOOTING HINTS
- The front-ECU may be defective
- The ETACS-ECU may be defective
- The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector

DIAGNOSIS

STEP 1. Verify the headlight (high-beam) operation.

Q: Do the headlights (high-beam) illuminate normally?

YES : Go to Step 2.

NO : Solve the problem first. Diagnosis By Symptom

STEP 2. Replacement of ECU
1. Replace the ETACS-ECU.
2. The headlights (high-beam) should flash when the theft alarm system is triggered.

Q: Do the headlights (high-beam) flash normally by the theft-alarm system?

YES : No action is necessary and testing is complete.

NO : Replace the front-ECU. The headlights (high-beam) should flash when the theft-alarm system is triggered.