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Inspection Procedure 1: Scan tool (M.U.T.-IIISE) cannot communicate with ACC system is impossible.
 
 
 
 
COMMENTS ON TROUBLE SYMPTOM
When scan tool (M.U.T.-IIISE) cannot communicate with the ACC system, the CAN bus lines, ACC-ECU power supply circuit system, ground, or ACC-ECU may be faulty.
 
 
PROBABLE CAUSES
  • Damaged wiring harness and connectors
  • ACC-ECU malfunction
  • Wrong routing of scan tool (M.U.T.-IIISE) harness
  • Abnormality in 12V starter battery or generator
  • Abnormality in power supply voltage to ACC-ECU
  • ECU malfunction of other system