B1080
DTC B1080: Power Supply Circuit (IG1 Line) Input Error for Relay Control Module and MICUNOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A
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 B1080 indicated?
YES - Go to step 4.
NO - Intermittent failure, check for loose or poor connections at the relay control module connector K (10P) and at driver's under-dash fuse/relay box connector D (17P) If the connections are OK, check the battery condition and the charging system.
4. Check the MICU IG1 power supply No 21 (7.5 A) fuse in the driver's under-dash fuse/relay box.
Is the fuse OK?
YES - Go to step 5.
NO - Replace the fuse and recheck for DTCs.
5. Turn the ignition switch OFF.
6. Disconnect the under-hood fuse/relay box connector K (10P), and inspect for loose or bent pins.
7. Reconnect the under-hood fuse/relay box connector K (10P).
8. Turn the ignition switch ON (II).
9. Measure voltage between the No 2 terminal of the under-hood fuse/relay box connector K (10P) and body ground.
Is there battery voltage?
YES - Go to step 10
NO - Repair an open in the wire between the under-hood fuse/relay box and the driver's under-dash fuse/relay box.
10. Check the voltage between the No 10 terminal of the under-hood fuse/relay box connector K (10P) and body ground.
Is there less than 1 V?
YES - Faulty relay control module replace the under-hood fuse/relay box.
NO - Repair an open in the wire between the under-hood fuse/relay box and G202 If the wire is OK, inspect G202.