Honda HR-V: DTC Troubleshooting 51-12: Motor Power Source Circuit Malfunction
NOTE: Before you troubleshoot, review the general troubleshooting
information.
![VSA System - Diagnostics](images/books/1097/index 122(9).png)
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.
![VSA System - Diagnostics](images/books/1097/index 123(10).png)
Is DTC 51-12 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.
![VSA System - Diagnostics](images/books/1097/index 124(10).png)
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 MTR line):
- Disconnect the following connector.
VSA modulator-control unit 21P connector
- Check for continuity between test points 1 and 2.
![VSA System - Diagnostics](images/books/1097/index 125(10).png)
Is there continuity?
YES
Repair a short to body ground in the +B ABS/VSA MTR wire between the No. D1-4
(40 A) fuse in the
auxiliary under-dash fuse box A and the VSA modulator-control unit.
NO
The +B ABS/VSA MTR wire is OK. Install a new No. D1-4 (40 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.
![VSA System - Diagnostics](images/books/1097/index 126(10).png)
Is DTC 51-12 indicated?
YES
Go to step 5.
NO
The troubleshooting is complete.
5. Open wire check (+B ABS/VSA MTR line):
- Turn the vehicle to the OFF (LOCK) mode.
- Disconnect the following connector.
VSA modulator-control unit 21P connector
- Measure the voltage between test points 1 and 2.
![VSA System - Diagnostics](images/books/1097/index 127(10).png)
Is there battery voltage?
YES
The +B ABS/VSA MTR wire is OK. Go to step 6.
NO
Repair an open in the +B ABS/VSA MTR wire between the No. D1-4 (40 A) fuse in
the auxiliary under-dash fuse box A and the VSA modulator-control unit.
6. VSA modulator-control unit check (update):
- Reconnect the following connector.
VSA modulator-control unit 21P connector (if disconnected)
- 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.
![VSA System - Diagnostics](images/books/1097/index 128(10).png)
Is DTC 51-12 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:
NOTE: Before you troubleshoot, review the general troubleshooting
information.
DTCs (VSA)
1. Solenoid operation check:
Turn the vehicle to the ON mode.
Clear the DTC with the HDS.
Turn the vehic
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 (
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 (
SEE MORE:
Special Tools Required
SRS Inflator Simulator 07SAZ-TB4011A
SRS Simulator Lead L 070AZ-SNAA300
NOTE:
Before doing this troubleshooting procedure, find out if the vehicle was
in a collision. If so, verify that all the required components were replaced
with new components of the correct part
NOTE:
Check the vehicle 12 volt battery condition first.
This navigation DTC sets when a problem (open or short) is detected in
the GA-Net BUS (the XM icon is
red in the System Links).
Before you troubleshoot, make sure to follow the General Troubleshooting
Information.
Check any official