DTC 66

Motor Circuit Shorted to B+:

Circuit Diagram:

REAR MOTOR CIRCUIT SHORTED TO B+
The ABS control module detects a fault in any of the motor circuits by monitoring a bias voltage. If a motor circuit is open, grounded, or shorted to battery, ABS will be disabled and the antilock and brake telltale will be turned On.

CODE PARAMETERS

Code 66 sets if:
^ Rear motor circuit is shorted to B+.
^ This code can set at all times except when a previous failure has disabled ABS operation.
^ The brake telltale will only light when the rear ABS motor is not in home position.

DIAGNOSTIC AIDS
When attempting to diagnose an intermittent problem, use the Scan tool[1] to review supplemental diagnostic information. The supplemental data can be used to duplicate a problem.


Check the tightness of the female terminal grip with a spare male terminal.

Motor resistance is less than 2 ohms.

Motor runs in both directions.

[1] Select Malfunction History from Scan tool ABS menu.