Code No. U0168 KOS CAN timeout
caution
If diagnosis code No. U0168 is set, be sure to diagnose the CAN bus line.
Before replacing ECU, ensure that the communication circuit is normal.
DIAGNOSTIC FUNCTION
When the signal from KOS-ECU cannot be received, OSS-ECU sets the diagnosis code No.U0168.
JUDGEMENT CRITERIA
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.
PROBABLE CAUSES
Malfunction of the CAN bus line
Malfunction of KOS-ECU
Malfunction of KOS-ECU power supply circuit
Malfunction of OSS-ECU
DIAGNOSIS PROCEDURE
1.
M.U.T.-III CAN bus diagnosis
2.
ETACS-ECU diagnosis code check
3.
OSS-ECU diagnosis code recheck