The F-CAN A_H wire and the F-CAN A_L wire are OK. Check for poor connections or loose terminals at the CAN gateway and the PCM. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM, then recheck. If indicated DTC goes away and the PCM was substituted, replace the original PCM.?
NO
Repair an open in the F-CAN A_H wire or the F-CAN A_L wire between the PCM (A1, A2) and the CAN gateway.?
4.
F-CAN circuit communication check (Transmitting control unit):
F-CAN circuit communication check (Transmitting control unit)
?1.
Select the FUNCTION TEST in the CAN gateway with the HDS, then select the F-CAN Bus Connected Unit Check.
?2.
According to the detected DTC on the following table, make sure that the transmitting control unit detects the CAN gateway Bus channel(s) normally.
DTC
Transmitting control unit
Detected CAN gateway Bus channel(s) at normal
U0104
Multipurpose camera unit
B
U0122
VSA modulator-control unit
B
U0131
EPS control unit
B
U0155
Gauge control module
A
U129E
Keyless access control unit
A
Is it detected normally?
Detected normal
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the transmitting control unit and the CAN gateway.?
U0104: Multipurpose camera unit is Not Available for Bus B
Go to step 6.
U0122: VSA modulator-control unit is Not Available for Bus B
Go to step 6.
U0131: EPS control unit is Not Available for Bus B
Go to step 6.
U0155: Gauge control module is Not Available for Bus A
Go to step 5.
U129E: Keyless access control unit is Not Available for Bus A
Go to step 5.
5.
Open wire check (F-CAN A_H line, F-CAN A_L line):
Open wire check (F-CAN A_H line, F-CAN A_L line)
?1.
Turn the vehicle to the OFF (LOCK) mode.
?2.
According to the detected DTC on the following table, disconnect the transmitting control unit connector(s).
DTC
Connector
-
CAN gateway 16P connector
U0155
Gauge control module 32P connector
U129E
Keyless access control unit connector C (20P)
?3.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
CAN gateway 16P connector: disconnected
Transmitting control unit connector(s) for indicated DTCs: disconnected