Immobilizer-Keyless Control Unit

DTC Troubleshooting: U1282 (Immobilizer-keyless Control Unit)

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. Multiplex Integrated Control System MICU Input Test If the tests prove OK, replace the driver's under-dash fuse/relay box. Driver's Under-Dash Fuse/Relay Box (MICU) Removal/Installation

NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections at driver's under-dash fuse/relay box connector P (20P) and the related units.