DTC Troubleshooting: U0151
DTC U0151: Gauge Control Module Lost Communication With SRS Unit
DTC Description
DTC
U0151 Gauge control module lost communication with SRS unit
  

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.

*: Wire colors may be substituted for SRS circuits.

1.
Problem verification:

Problem verification
?1.
Clear the DTCs with the HDS.


?2.
Turn the ignition switch to LOCK (0) and then back to ON (II), or press the engine start/stop button to select the OFF mode and then the ON mode.

?3.
Wait for at least 6 seconds.

?4.
Check for DTCs with the HDS.
DTC Description
DTC
U0151 Gauge control module lost communication with SRS unit
  

Is DTC U0151 indicated?

     
YES
     
     
     
Go to step 2.
     
NO
     
     
     
Intermittent failure, the system is OK at this time. Check for loose or poor connections.?
2.
Open wire check (F-CAN lines):

Open wire check (F-CAN lines)
?1.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?2.
Disconnect the following connectors.

?3.
Check for continuity between test points 1 and 2 respectively.
Test condition
IG LOCK (0) or OFF mode
Gauge control module connector A (32P): disconnected
SRS unit connector A (39P): disconnected
Test circuit
F-CAN_H
Test point 1
Gauge control module connector A (32P) No. 19 (WHT)
Test point 2
SRS unit connector A (39P) No. 34 (WHT*)

Test circuit
F-CAN_L
Test point 1
Gauge control module connector A (32P) No. 20 (RED)
Test point 2
SRS unit connector A (39P) No. 35 (RED*)


Is there continuity?

     
YES
     
     
     
The F CAN wires are OK. Replace the gauge control module.?
     
NO
     
     
     
An open or poor connection in the F CAN wires between the SRS unit and the gauge control module.?