Immobilizer-Keyless Control Unit

DTC Troubleshooting: U1282

DTC U1282:

Immobilizer-keyless Control Unit Lost Communication With 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 MICU input test, and do all power, ground, and communication input tests MICU And Door Multiplex Control Unit Input Test. If the tests prove OK, replace the under-dash fuse/relay box Under-Dash Fuse/Relay Box Removal And Installation.

NO -

Intermittent failure, the system is OK at this time. Check for loose or poor connections at under-dash fuse/relay box connector T (34P) and the related units.