( TL19E00K769000U1283FAAT00 )

DTC Troubleshooting: U1283

DTC U1283:
Driver's MICU Lost Communication with Passenger's MICU

1. Clear the DTCs with the HDS.

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

1. Wait for 6 seconds or more.

1. Check for DTCs with the HDS.

Is DTC U1283 indicated?

YES | - | Go to Step 5 .
NO | - | Intermittent failure, the system is OK at this time. Check for loose or poor connections.■

1. Check for DTCs with the HDS.

Is DTC U1280 indicated?

YES | - | Go to the DTC U1280 troubleshooting.■
NO | - | Go to Step 6 .

1. Turn the ignition switch to LOCK (0).

1. Disconnect passenger's under-dash fuse/relay box connector A (38P).

1. Disconnect driver's under-dash fuse/relay box connector P (20P).

1. Check for continuity between passenger's under-dash fuse/relay box connector A (38P) No. 11 and No. 29 terminals and driver's under-dash fuse/relay box connector P (20P) No. 5 and No. 6 terminals individually.
   NOTE: The illustration shows the LHD models and the gray portion shows the lock lever. The lock lever for RHD models is shown as the dashed line.

Is there continuity?

YES | - | Go to the passenger's MICU input test, and do all power and ground input tests. If the tests prove OK, replace the passenger's under-dash fuse/relay box.■
NO | - | An open in the wire.■