Honda HR-V Owners & Service Manuals

Honda HR-V: DTC Troubleshooting 81-19: Yaw Rate Sensor (Inside of Modulator-Control Unit) Internal Circuit Malfunction

Honda HR-V (2015-2021) Service Manual / Brakes / VSA System - Diagnostics / DTC Troubleshooting / DTC Troubleshooting 81-19: Yaw Rate Sensor (Inside of Modulator-Control Unit) Internal Circuit 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 this code.

VSA System - Diagnostics

1. Problem verification:

  1. Turn the vehicle to the ON mode.
  2. Clear the DTC with the HDS.
  3. Turn the vehicle to the OFF (LOCK) mode, then to the ON mode.
  4. Test-drive the vehicle at 9 mph (15 km/h) or more.

NOTE: Drive the vehicle on the road, not on a lift.

  1. Stop the vehicle, keep the ON mode, and wait for 30 seconds or more.
  2. Check for DTCs with the HDS.

VSA System - Diagnostics

Is DTC 81-19 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):

  1. Update the VSA modulator-control unit if it does not have the latest software.
  2. Turn the vehicle to the OFF (LOCK) mode.
  3. Test-drive the vehicle at 9 mph (15 km/h) or more.

NOTE: Drive the vehicle on the road, not on a lift.

  1. Stop the vehicle, keep the ON mode, and wait for 30 seconds or more.
  2. Check for DTCs with the HDS.

VSA System - Diagnostics

Is DTC 81-19 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.

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