DTC Troubleshooting: B1029

DTC B1029: Alarm Control Siren Lost Communication with MICU

1. Check the No. 7 (10 A) fuse in the under-dash fuse/relay box.

Is the fuse OK?

YES | - | Go to Step 2 .
NO | - | Replace the fuse and recheck for DTCs.■

1. Check for continuity between the alarm control siren No. 4 terminal and body ground.

Is there continuity?

YES | - | Go to Step 3 .
NO | - | Repair a short in the BLK wire.■

1. Check for continuity between the alarm control siren No. 1 terminal and body ground.

Is there continuity?

YES | - | Go to Step 4 .
NO | - | Repair a short in the WHT/RED wire.■

1. Check for continuity between the alarm control siren No. 2 terminal and under-dash fuse/relay box Q8 terminal.

Is there continuity?

YES | - | Faulty alarm control siren or MICU; Replace the alarm control siren or MICU .■
NO | - | Repair an open in the YEL wire between the alarm control siren and MICU.■