DTC Troubleshooting: U1283
DTC U1283:
 Gauge Control Module 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. From the BODY ELECTRICAL system select menu, select UNIT INFORMATION, and then select CONNECTED UNIT.
Is the passenger's MICU detected?
YES -
Replace the gauge control module. ■
NO -
Go to Step 6 .
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect the gauge control module 32P connector.
  1. Disconnect passenger's under-dash fuse/relay box connector A (38P).
  1. Check for continuity between the gauge control module 32P connector No. 23 and No. 24 terminals and passenger's under-dash fuse/relay box connector A (38P) No. 11 and No. 29 terminals individually.
    NOTE: The illustration shows the LHD models and the gray position shows the lock lever. The lock lever for RHD models is shown as the dashed line.
Is there continuity?
YES -
Go to 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.■