Immobilizer-Keyless Control Unit

DTC Troubleshooting: U1282

DTC U1282:

Immobilizer-Keyless Control Unit Lost Communication With Driver's MICU

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0), and then back to ON (II).

3. Wait for at least 6 seconds.

4. Check for DTCs with the HDS.

Is DTC U1282 indicated?

YES -

Go to the driver's MICU input test, and do all power, ground, and communication input tests Drivers and Passengers MICU Input Test. If the tests prove OK, replace the driver's under-dash fuse/relay box Drivers Under-Dash Fuse/Relay Box (Drivers MICU) Removal and Installation. If the DTC is still present, replace the immobilizer-keyless control unit Service and Repair.

NO -

Intermittent failure, the system is OK at this time. Check for loose or poor connections between the immobilizer-keyless control unit and the driver's MICU.