DTC U1281 (Gauge Control Module) (2017 2018 2019 2020)
DTC U1281 : Gauge control module lost communication with MICU (MICU frame)
| DTC Description | DTC |
|---|---|
| U1281 Gauge control module lost communication with MICU (MICU frame) |
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 Checks (2017 2018 2019 2020)
- 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 U1281 Gauge control module lost communication with MICU (MICU frame) Is DTC U1281 indicated?
YES
Go to step 2.
NO
Intermittent failure, the system is OK at this time.
- Open wire check (B-CAN lines)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the receiving control unit connector.
Gauge control module connector A (32P) - 3. Disconnect the transmitting control unit connectors.
Driver's under-dash fuse/relay box connector G (16P) - 4. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode
Gauge control module connector A (32P): disconnected
Driver's under-dash fuse/relay box connector G (16P): disconnectedTest point 1 Gauge control module connector A (32P) (female terminals) No. 25: Test point 2 Driver's under-dash fuse/relay box connector G (16P) No. 1 - Refer to:
MICU Input Test (2017 2018 2019 2020)Test point 1 Gauge control module connector A (32P) (female terminals) No. 26: Test point 2 Driver's under-dash fuse/relay box connector G (16P) No. 2 - Refer to:
MICU Input Test (2017 2018 2019 2020)Is there continuity?
YES
The B-CAN_L to B-CAN_H wire is OK. Go to step 3.
NO
Repair an open or high resistance in the wire (s).
- Determine possible failure area (the receiving control unit or the transmitting control unit)
- 1. Reconnect all connectors.
- 2. Clear the DTCs with the HDS.
- 3. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.
- 4. Wait for at least 6 seconds.
- 5. Check for DTCs with the HDS.
DTC Description DTC U1281 Gauge control module lost communication with MICU (MICU frame) Is DTC U1281 indicated?
YES
Check for loose terminals and poor connections in the receiving control unit connector. Check is OK, replace the gauge control module .
NO
The receiving control unit is OK at this time. Replace the MICU - Refer to: Driver's Under-Dash Fuse/Relay Box Removal and Installation,