Honda HR-V: DTC Troubleshooting 25-121, 26-121, 28-121: Sensor (Inside of
Modulator-Control Unit) Output Signal Malfunction
NOTE:
- Before you troubleshoot, review the general troubleshooting information.
- The yaw rate-acceleration sensor is built into the VSA modulator-control
unit.
- Before troubleshooting, check the VSA modulator-control unit for proper
mounting. Improper mounting
of the VSA modulator-control unit may set these codes.
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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.
- Test-drive the vehicle at 9 mph (15 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.
- Check for DTCs with the HDS.
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Is DTC 25-121, 26-121, or 28-121 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. 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.
- Test-drive the vehicle at 9 mph (15 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.
- Check for DTCs with the HDS.
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Is DTC 25-121, 26-121, or 28-121 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.
The yaw rate-acceleration sensor is built into the VSA modulator-control
unit.
Before troubleshooting, check the VS
NOTE:
This DTC may set if the vehicle is driven on a lift (wheels are turning)
and the steering wheel is turned
significantly. This is normal, ignore it.
Before you troubleshoot, review the gene
NOTE: Before you troubleshoot, review the general troubleshooting
information.
DTCs (VSA)
1. Problem verification:
Turn the vehicle to the ON mode.
Clear the DTC with the HDS.
Turn the vehicle t
SEE MORE:
Removal & Installation
1. 12 Volt Battery Terminal - Disconnect
2. Auxiliary Under-Dash Fuse Box A - Remove
Remove the cover (B) from the auxiliary under-dash fuse
box A (A)
Remove the cable terminal (C)
Remove the connectors (D)
Remove the auxiliary under-dash fuse box A.
3. Bracket - R
Seat belts are the single most effective safety device because they keep you
connected to the vehicle so that you can take advantage of many built-in safety
features. They also help keep you from being thrown against the inside of the
vehicle, against other passengers, or out of the vehicle. When wo