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DTC B1731: PMC authentification T/out
 
 
caution
  • If DTC U1731 is set, diagnose the CAN bus lines.
  • When replacing the ECU, always check that the communication circuit is normal.
 
 
DIAGNOSTIC FUNCTION
If the necessary data cannot be received from engine control module via CAN bus line during the engine starting certification with engine control module, OSS-ECU determines that a problem has occurred, and stores DTC B1731. At the same time, OSS-ECU displays the immobilizer certification system inspection warning screen to the multi information display of the combination meter.
 
 
DTC SET CONDITION
Check Conditions
  • At engine starting certification
Judgment Criterion
  • At the engine starting certification with engine control module, necessary data cannot be received from engine control module via CAN bus line.
 
 
TROUBLESHOOTING HINTS
  • Malfunction of the CAN bus line
  • Malfunction of engine control module
  • Malfunction of OSS-ECU
 
 
DIAGNOSIS
1. Using scan tool (M.U.T.-IIISE), diagnose the CAN bus line.
2. Engine control module diagnostic trouble code check
3. OSS-ECU diagnostic trouble code recheck