DTC U0151 SRS CAN timeout
caution
If DTC U0151 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 SRS-ECU cannot be received, OSS-ECU sets the DTC U0151.
DTC SET CONDITION
Check Conditions
When all the following conditions are met.
Power supply mode: ON
ETACS-ECU battery 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 SRS-ECU cannot be received.
TROUBLESHOOTING HINTS
Malfunction of the CAN bus line
Malfunction of SRS-ECU
Malfunction of SRS-ECU power supply circuit
Malfunction of OSS-ECU
DIAGNOSIS
1.
Using scan tool MB991958, diagnose the CAN bus line.
2.
ETACS-ECU DTC check
3.
OSS-ECU DTC recheck