VSA DTC 91-1
DTC 91-1 : VSA Activation Time Too Long
NOTE: Before you troubleshoot, review the how to troubleshoot the VSA system - Refer to:
How to Troubleshoot the VSA System (2014 2015 2016) or
How to Troubleshoot the VSA System (2017 2018 2019 2020) .
| DTC Description | DTC | Freeze Frame |
|---|---|---|
| 91-1 VSA Activation Time Too Long |
DTCs (VSA)
- Brake system check
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Check the brake system for leaks or mechanical problems.
Is the brake system OK? (No brake fluid leakage, no air trapped in the brake system, no worn out brake pads.)
YES
Go to step 2.
NO
Repair the brake system.
- 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.
- 4. Test-drive the vehicle in a straight line. Accelerate the vehicle up to 6 mph (10 km/h) or more, and stop, then accelerate up to 6 mph (10 km/h) or more.
NOTE:
- Do the test-driving in a safe area.
- Drive the vehicle on the road, not on a lift.
- 5. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame 91-1 VSA Activation Time Too Long Is DTC 91-1 indicated?
YES
The failure is duplicated. Go to step 3.
NO
Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting - Refer to:
How to Troubleshoot the VSA System (2014 2015 2016) or
How to Troubleshoot the VSA System (2017 2018 2019 2020) .
If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the Freeze data/on-board snapshot.
- 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 in a straight line. Accelerate the vehicle up to 6 mph (10 km/h) or more, and stop, then accelerate up to 6 mph (10 km/h) or more.
NOTE:
- Do the test-driving in a safe area.
- Drive the vehicle on the road, not on a lift.
- 4. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame Is DTC 91-1 indicated?
YES
Check for loose terminals in the VSA modulator-control unit 38P 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.