DTC Troubleshooting: B1905
|DTC B1905:||Immobilizer-Keyless Control Unit Lost Communication with MICU (DRLOCKSW Message)|
|1.||Clear the DTCs with the HDS.|
|2.||Turn the ignition switch OFF, and then back ON (II).|
|3.||Check for DTCs with the HDS.|
Is DTC B1905 indicated?
YES - Go to 4.
NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections at the immobilizer-keyless control unit 7P connector, and at the under-dash fuse/relay box connector Q (16P).n
|4.||Check for DTCs with the HDS.|
Is DTC B1160 and B1905 indicated?
YES - Faulty MICU; replace the under-dash fuse/relay box.n
NO - Replace the immobilizer-keyless control unit.n