Inspection Procedure 9

DEFOGGER TIMER FUNCTION DOES NOT OPERATE.

CIRCUIT OPERATION
Turn ON the defogger switch. If the defogger does not shut off after roughly 11 minutes then the defogger timer is malfunctioning.

TROUBLESHOOTING HINTS
- Malfunction of the A/C-ECU

Step 1. Check the performance of the defogger timer operations.

1. Ignition switch: ON.
Defogger switch: ON (operate for approx. 11 minutes)

Q: Does the defogger timer function work normally?

YES: Intermittent malfunction

NO: Replace the A/C-ECU. Check that the defogger timer function works normally.