DTC U0100: Gauge Control Module Lost Communication With ENG/AT
| DTC Description | DTC |
|---|---|
| U0100 Gauge control module lost communication with ENG/AT |
DTC (Gauge Control Module)
- If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC ChecksBody Electrical Troubleshooting - B-CAN System Diagnosis Test Mode 1 and Test Mode 2 (without the HDS)Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode B - Control Unit Not CommunicatingBody Electrical Troubleshooting - B-CAN System Diagnosis Test Mode C - No DTCs and Output Won't Shut OFFBody Electrical Troubleshooting - B-CAN System Diagnosis Test Mode D - No DTCs and Output Won't Turn ON .
- If you have any loss of communication DTCs for the PCM, troubleshoot those DTCs first.
- 1. Problem verification:
1. Clear the DTCs with the HDS.
2. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS.
DTC Description DTC U0100 Gauge control module lost communication with ENG/AT Is DTC U0100 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):
1. Turn the vehicle to the OFF (LOCK) mode.
2. Wait for at least 2 minutes.
3. Disconnect the following connectors.
PCM connector A (51P) Gauge control module connector A (32P) 4. Check for continuity between test points 1 and 2 respectively.
Test condition Vehicle OFF (LOCK) mode PCM connector No. 2 (58P): disconnected
Gauge control module connector A (32P): disconnected
Test point 1 Gauge control module connector A (32P) No. 19 Test point 2 PCM Connector A (51P) No. 2 Test point 1 Gauge control module connector A (32P) No. 20 Test point 2 PCM Connector A (51P) No. 1 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 PCM and the gauge control module.