DTC C1270-15
DTC C1270-15 : Automatic Brake Hold Switch Signal Circuit Open
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 |
|---|---|---|
| C1270-15 Automatic Brake Hold Switch Signal Circuit Open |
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 C1270-15 Automatic Brake Hold Switch Signal Circuit Open Is DTC C1270-15 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.
Is the automatic brake hold switch OK?
YES
Go to step 3.
NO
Replace the electric parking brake/automatic brake hold switch .
- Open wire check (BRAKE HOLD line) 1
- 1. Disconnect the following connector.
Electric parking brake/automatic brake hold switch 12P connector - 2. Turn the vehicle to the ON mode.
- 3. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode Electric parking brake/automatic brake hold switch 12P connector: disconnected Test point 1 Electric parking brake/automatic brake hold switch 12P connector (female terminals) No. 12: Test point 2 Body ground Is there about 5 V?
YES
The BRAKE HOLD wire is OK. Go to step 4.
NO
Go to step 5.
NO
Go to step 6.
- Open wire check (SGND line)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 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 Test point 1 Electric parking brake/automatic brake hold switch 12P connector (female terminals) No. 6: Test point 2 Body ground Is there continuity?
YES
The SGND wire is OK. Replace the gauge control module .
NO
Repair an open in the wire between the electric parking brake/automatic brake hold switch and body ground (G507).
- Shorted wire check (BRAKE HOLD line to power)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connector.
Gauge control module connector A (32P) - 3. Turn the vehicle to the ON mode.
- 4. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON 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 0.1 V or more?
YES
Repair a short to power in the wire between the electric parking brake/automatic brake hold switch and the gauge control module.
NO
- Open wire check (BRAKE HOLD line) 2
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connector.
Gauge control module connector A (32P) - 3. 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 Gauge control module connector A (32P) (female terminals) No. 3: Is there continuity?
YES
Replace the gauge control module .
NO
Repair an open in the wire between the electric parking brake/automatic brake hold switch and the gauge control module.