Is there continuity?
YES -
Replace the relay control module.?
NO -
Repair an open in the BLK wire or poor ground (G201-right side, G301-left side).?
B1080
DTC Troubleshooting: B1080
DTC B1080:
Power Supply Circuit (IG1 Line) Input Error for Relay Control Module and MICU
NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A See: Powertrain
Management/Computers and Control Systems/Information Bus/Testing and Inspection/Component Tests and General Diagnostics/Troubleshooting
- B-CAN System Diagnosis Test Mode A.
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0) and then back to ON (II).
3. Wait for at least 6 seconds.
4. Check for DTCs with the HDS.
Is DTC B1080 indicated?
YES -
Go to step 5.
NO -
Intermittent failure, the system is OK at this time. Check for loose or poor connections.?
5. Turn the ignition switch to LOCK (0).
6. Disconnect under-hood fuse/relay box connector D (10P).
7. Turn the ignition switch to ON (II).
8. Measure the voltage between under-hood fuse/relay box connector D (10P) terminal No. 7 and body ground.
Is there battery voltage?
YES -
Substitute a known-good under-hood fuse/relay box and recheck.?
NO -
Go to step 9.
9. Turn the ignition switch to LOCK (0).
