Honda HR-V: DTC Troubleshooting 54-11, 54-12: Fail-Safe Relay Stuck
NOTE: Before you troubleshoot, review the general troubleshooting information.
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1. Problem verification:
- Turn the vehicle to the ON mode.
- Clear the DTC with the HDS.
- Turn the vehicle to the OFF (LOCK) mode, then to the ON mode.
- Check for DTCs with the HDS.
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Is DTC 54-11 or 54-12 indicated?
YES
The failure is duplicated. Go to step 2.
NO
Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.
2. Fuse check:
- Turn the vehicle to the OFF (LOCK) mode.
- Check the following fuse.
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Is the fuse OK?
YES
The fuse is OK. Reinstall the fuse, then go to step 5.
NO
Go to step 3.
3. Shorted wire check (+B ABS/VSA FSR line):
- Disconnect the following connector.
VSA modulator-control unit 21P connector
- Check for continuity between test points 1 and 2.
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Is there continuity?
YES
Repair a short to body ground in the +B ABS/VSA FSR wire between the No. D5 (30 A) fuse in the auxiliary under-dash fuse box A and the VSA modulator-control unit.
NO
The +B ABS/VSA FSR wire is OK. Install a new No. D5 (30 A) fuse in the auxiliary under-dash fuse box A, then go to step 4.
4. VSA modulator-control unit check:
- Reconnect the following connector.
VSA modulator-control unit 21P connector
- Turn the vehicle to the ON mode.
- Clear the DTC with the HDS.
- Turn the vehicle to the OFF (LOCK) mode, then to the ON mode.
- Check for DTCs with the HDS.
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Is DTC 54-11 or 54-12 indicated?
YES
Go to step 5.
NO
The troubleshooting is complete.
5. VSA modulator-control unit check (update):
- Update the VSA modulator-control unit if it does not have the latest software.
- Turn the vehicle to the OFF (LOCK) mode, then to the ON mode.
- Check for DTCs with the HDS.
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Is DTC 54-11 or 54-12 indicated?
YES
Check for loose terminals in the VSA modulator-control unit 21P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit.
NO
Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.
READ NEXT:
DTC Troubleshooting 56-11: Fail-Safe Relay Power Source Malfunction
NOTE: Before you troubleshoot, review the general troubleshooting
information.
1. Problem verification:
Turn the vehicle to the ON mode.
Clear the DTC with the HDS.
Turn the vehicle to the OFF (
DTC Troubleshooting 58-11: Brake Diag Circuit OFF Failure
NOTE: Before you troubleshoot, review the general troubleshooting
information.
1. Problem verification:
Turn the vehicle to the ON mode.
Clear the DTC with the HDS.
Turn the vehicle to the OFF (
DTC Troubleshooting 58-12: Brake Diag Circuit ON Failure
NOTE: Before you troubleshoot, review the general troubleshooting
information.
1. Brake light relay relay check:
Turn the vehicle to the OFF (LOCK) mode.
Check the brake lights without pressing t
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DTC C0044-F0 Master Cylinder Pressure Sensor Malfunction
NOTE : Before you troubleshoot, review the how to troubleshoot information -
Refer to: How to Troubleshoot
the Forward Collision Warning (FCW), or How to Troubleshoot the Lane Departure
Warning (LDW).
DTCs (FCW/LDW)
1. Problem verification.
Turn the vehicle to the ON mode.
Clear the DTC with t
