DTC Troubleshooting: B1080

DTC B1080: Power Supply Circuit (IG1 line) Input Error for Relay Control Module and MICU

1. Clear the DTCs using the HDS.

1. Cycle the ignition switch to OFF, and then back ON.

1. Turn the ignition switch ON (II) and wait for 2 seconds or more.

Is DTC B1080 indicated again?

YES | - | Go to Step 4 .
NO | - | Intermittent failure, the relay module is OK at this time.■

1. Turn the washer switch on.

Does the washer fluid squirt?

YES | - | Go to Step 5 .
NO | - | Go to Step 6 .

1. Check the MICU IG1 power supply No. 21 (7.5 A) fuse in the under-dash fuse/relay box.

Is the fuse OK?

YES | - | Faulty MICU; replace the under-dash fuse/relay box.■
NO | - | Replace the fuse and recheck for DTCs.■

1. Check for continuity between the D6 terminal of the under-dash fuse/relay box and relay control module J8 terminal.

Is the OK?

YES | - | Replace the relay control module.■
NO | - | Repair the open in the YEL wire.■