Toyota RM787U, Service And Repair Manual

Page: 499 / 1976

DI-638
- DIAGNOSTICS BODY CONTROL SYSTEM
792
Author: Date:
2001 SIENNA (RM787U)
WIRELESS DOOR LOCK CONTROL SYSTEM:
Symptom Suspect Area See page
All functions of wireless door lock control system do not operate.
1. Wireless door lock tuner circuit
2. Key unlock warning switch circuit
3. Body ECU (Integration relay)
DI-679
DI-673
DI-632
Lock or unlock function does not operate.
1. Door key lock and unlock switch circuit
2. Door unlock detection switch circuit
3. Body ECU (Integration relay)
DI-653
DI-673
DI-632
Automatic lock function operates even if any door is opened within
30 seconds after all doors are unlocked by wireless door lock
control system.
1. Door courtesy switch circuit
2. Body ECU (Integration relay)
DI-657
DI-632
Wireless door lock operates, but the buzzer does not sound.
1. Wireless door lock buzzer circuit
2. Wireless door lock tuner circuit
3. Body ECU (Integration relay)
DI-681
DI-679
DI-632
Buzzer sound, but wireless door lock function does not operate.
1. Wireless door lock tuner circuit
2. Body ECU (Integration relay)
DI-679
DI-632
HORN SYSTEM:
Symptom Suspect Area See page
Horn system does not operate.
1. Horn circuit
2. Body ECU (Integration relay)
DI-677
DI-632
Horns blow all the time.
1. Horn circuit
2. Body ECU (Integration relay)
DI-677
DI-632
One horn operates but the other horn does not operate.
1. Horn circuit
2. Body ECU (Integration relay)
DI-677
DI-632
Horns operate abnormally.
1. Horn circuit
2. Body ECU (Integration relay)
DI-677
DI-632