DTC U0168: F.A.S.T. CAN timeout
caution
If DTC U0168 is stored, be sure to diagnose the CAN bus line.
When replacing the ECU, always check that the communication circuit is normal.
DIAGNOSTIC FUNCTION
When the signal from KOS-ECU cannot be received, OSS-ECU stores DTC U0168.
DTC SET CONDITION
Check Conditions
When all the following conditions are met.
Power supply mode: ON
ETACS-ECU system voltage is at 10 to 16 V.
Judgment Criterion
After the following condition is met, 2,500 ms or more have elapsed.
CAN signal from KOS-ECU cannot be received.
TROUBLESHOOTING HINTS
Malfunction of the CAN bus line
Malfunction of KOS-ECU
Malfunction of KOS-ECU power supply circuit
Malfunction of OSS-ECU
DIAGNOSIS
1.
Using scan tool (M.U.T.-III), diagnose the CAN bus line.
2.
ETACS-ECU diagnostic trouble code check
3.
OSS-ECU diagnostic trouble code recheck