Inspection Procedure 1: M.U.T.-III cannot communicate with FCM system.
caution
When the FCM-ECU is replaced, calibrate the radar (refer to
).
COMMENTS ON TROUBLE SYMPTOM
When M.U.T.-III cannot communicate with the FCM system, the CAN bus lines, FCM-ECU power supply circuit system, earth, or FCM-ECU may be faulty.
PROBABLE CAUSES
Damaged wiring harness and connectors
FCM-ECU malfunction
Wrong routing of M.U.T.-III harness
Abnormality in battery or alternator
Abnormality in power supply voltage to FCM-ECU
ECU malfunction of other system