DTC C0020-12

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DTC C0020-12 : Pump Motor Circuit Failure (Stuck ON)

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: Turn the vehicle to the ON mode.
Execution	Initial Diagnosis/Regular Diagnosis
Duration	About 1 second
DTC Type	1 drive cycle Brake system indicator (red) on Brake system indicator (amber) on ABS indicator on VSA indicator on
Fail Safe Action	Degrade EBD performance Stop ABS function Stop engine drag torque control function Stop TCS function Stop VSA function Stop agile handling assist function Stop hydraulic boost failure compensation function Stop electric parking brake function (some of function)
Possible Cause	Open or poor connection between the VSA modulator-control unit and body ground (GND line) VSA modulator-control unit internal failure