|
DTC Troubleshooting: U0104
DTC U0104: Gauge Control Module Lost Communication With ACC
|
DTC Description |
DTC |
|
U0104 Gauge control module lost communication with ACC |
| |
|
NOTE:
|
|
If you have any loss of communication DTCs for the PCM, troubleshoot those DTCs first. |
|
|
|
|
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 |
|
U0104 Gauge control module lost communication with ACC |
| |
| | |
Is DTC U0104 indicated?
|
|
|
|
|
|
|
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.
|
Test condition |
IG LOCK (0) or OFF mode |
| |
ACC unit 20P connector: disconnected |
| |
Gauge control module connector A (32P): disconnected |
|
Test circuit |
F CAN-L |
|
Test point 1 |
ACC unit 20P connector No. 13 (RED) |
|
Test point 2 |
Gauge control module connector A (32P) No. 20 (RED) | |
|
|
Test circuit |
F CAN-H |
|
Test point 1 |
ACC unit 20P connector No. 2 (WHT) |
|
Test point 2 |
Gauge control module connector A (32P) No. 19 (WHT) | |
|
| |
Is there continuity?
|
|
|
|
|
|
|
An open or poor connection in the F CAN wires between the ACC unit and the gauge control module.? | | 