DTC Advanced Diagnostics: C1110-13
DTC C1110-13: Left Rear Electric Parking Brake Actuator Circuit Open
NOTE
Initial Diagnosis:
The initial on-board diagnosis occurs right after the vehicle condition is turned to the ON mode, and the ABS/VSA indicator comes on, and continues until the indicator goes off.
Regular Diagnosis:
The regular on-board diagnosis begins right after the ABS/VSA indicator goes off, and it continues until the vehicle condition is turned to the OFF (LOCK) mode.
Review "How to troubleshoot the VSA system" before doing the DTC troubleshooting procedure.
Test-drive the vehicle according to local traffic conditions and regulations. Do not test-drive on a lift unless specified.
The possible causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.

Confirmation Procedure
With the Driving Pattern:
1.
Turn the vehicle to the ON mode.
2.
Apply and release the parking brake several times.
Execution
Regular Diagnosis
Duration
About 1 second
DTC Type
1 drive cycle
Brake system indicator (amber) on
Fail Safe Action
Stop automatic brake hold function
Stop manual operating function
Stop automatic operating function (Drive away assist)
Stop automatic operating function (Request from other system)
Stop ignition OFF apply function
Stop ACC function*
Stop CMBS function*
Possible Cause
Open or Poor connection between the VSA modulator-control unit and the left-rear electric parking brake actuator (EPB L ACT+, EPB L ACT- lines)
Open, Short to ground, or Poor connection between the VSA modulator-control unit and the under-hood fuse/relay box (+B ABS/VSA FSR line)
Fuse failure (Under-hood fuse/relay box No. A3-2 (40 A))
Left electric parking brake actuator
VSA modulator-control unit internal failure
*: With ACC