Inspection Procedure J-8

INSPECTION PROCEDURE J-8: Headlight, tail light: headlights do not illuminate when the lighting switch is at 'tail' and 'passing' position, but illuminate at low-beam when the switch is at 'head' position, at this position, the headlights cannot be changed by operating the dimmer switch.

TECHNICAL DESCRIPTION (COMMENT)
If the headlights illuminate at low-beam regardless of the lighting switch positions, the headlight operation is in fail-safe mode.

TROUBLESHOOTING HINTS
- The column switch may be defective
- The front-ECU may be defective
- The ETACS-ECU may be defective
- Damaged wiring harness and connectors

Check the DTC.

Q: Does DTC set when the ignition switch is turned to the 'LOCK (OFF) position?

YES : Carry out the troubleshooting by referring to Diagnostic Trouble Code Chart.

NO : Replace the front-ECU. Check that the headlights and the tail lights illuminate normally.