Antilock Braking System (ABS)

DTC 62 Right Front Motor Circuit Shorted To Ground:

CIRCUIT DESCRIPTION
This DTC identifies a motor circuit that is shorted to ground. This malfunction will not allow the motor to be controlled at the commanded current rate or will cause the motor driver circuit to allow current directly to ground.

FAILURE CONDITION
DTC A062 can be set anytime. If the EBCM detects an out of range voltage in either of the right front motor circuits indicating a circuit shorted to ground, a malfunction exists.

ACTION TAKEN
A malfunction DTC is stored, ABS is disabled and the ABS indicator lamp is turned "0N."

TEST DESCRIPTION
Number(s) below refer to circled number(s) on the diagnostic chart.
1. This step checks for a motor that is internally shorted to ground.
2. This step checks for a short to ground in the motor circuitry.
3. This step ensures malfunction was not due to a poor connection.
4. This step is used to release the tension of the motor pack prior to removal.

DIAGNOSTIC AIDS
Using Tech 1, select manual control function, and exercise motor movement of affected channel in both directions while applying light pressure on the brake pedal.

If erratic or "jumpy" brake pedal movement is detected while performing an "apply" or "release" function of the motor, an intermittent malfunction may be indicated.

An "Intermittent" malfunction may be caused by a poor connection, rubbed through wire insulation, or a wire that is broken inside the insulation.

If the malfunction is not current, wiggle the wires of the affected channel and check if the DTC resets. This will help to pinpoint an intermittent malfunction in the motor circuitry or connections.

The frequency of the malfunction can be checked by using the enhanced diagnostic function of the Tech 1.

Any circuitry, that is suspected as causing the intermittent complaint, should be thoroughly checked for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, poor terminal to wiring connections or physical damage to the wiring harness.