Honda HR-V: Keyless Access Backup Control Unit - Diagnostics

 DTC U128D (Keyless Access Backup Control Unit) Backup Control Unit Lost Communication With Gauge Control Module

NOTE: The DTC may be stored due to the grounding failure or the power source failure at the transmitting control unit (the grounding inspection and the power source inspection on each control unit are required prior to this checking process). DTC (Backup Control Unit) NOTE: If you are troubleshoo

 PCM Power and Ground Circuit Troubleshooting

1. Engine starting check. Try to start the engine. Does the engine start and idle smoothly? YES Go to the F-CAN circuit troubleshooting. NO Go to step 2. 2. Fuse check. Turn the vehicle to the OFF (LOCK) mode. Check the following fuse. Is the fuse OK? YES Go to step 6. NO Go to step 3. 3. Sh