DTC C1270-11
DTC C1270-11 : Automatic Brake Hold Switch Signal Circuit Short
NOTE: Before you troubleshoot, review the general troubleshooting information - 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 |
|---|---|---|
| C1270-11 Automatic Brake Hold Switch Signal Circuit Short |
DTC (VSA)
- 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. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame C1270-11 Automatic Brake Hold Switch Signal Circuit Short Is DTC C1270-11 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 - 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.
- Automatic brake hold switch check
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2.Check the automatic brake hold switch. Refer to:Automatic Brake Hold Switch Removal, Installation, and Test
Is the automatic brake hold switch OK?
YES
Go to step 3.
NO
Replace the electric parking brake/automatic brake hold switch .
- Shorted wire check (BRAKE HOLD line)
- 1. Disconnect the following connectors.
Electric parking brake/automatic brake hold switch 12P connector Gauge control module connector A (32P) - 2. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Electric parking brake/automatic brake hold switch 12P connector: disconnected Gauge control module connector A (32P): disconnected Test point 1 Electric parking brake/automatic brake hold switch 12P connector (female terminals) No. 12: Test point 2 Body ground Is there continuity?
YES
Repair a short to body ground in the wire between the electric parking brake/automatic brake hold switch and the gauge control module.
NO
Go to step 4.
- Gauge control module check (substitution)
- 1.Substitute a known-good gauge control module. Refer to:Gauge Control Module Removal and Installation
- 2. Reconnect the following connectors.
Electric parking brake/automatic brake hold switch 12P connector Gauge control module connector A (32P) - 3. Turn the vehicle to the ON mode.
- 4. Clear the DTC with the HDS.
- 5. Turn the vehicle to the OFF (LOCK) mode, then to the ON mode.
- 6. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame C1270-11 Automatic Brake Hold Switch Signal Circuit Short Is DTC C1270-11 indicated?
YES
Check for loose terminals and poor connections in the VSA modulator-control unit 38P connector. If they are OK, replace the VSA modulator-control unit .
NO