Code 157/162 - TCS Motor Circuit Shorted To Ground (W/TCS): Notes

Code 157 - Left Rear
Code 162 - Right Rear

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

Code 157 can set anytime EBTCM detects an out of range voltage on either TCS motor circuits, indicating a circuit shorted to ground. When code sets, TCS is disabled, TCS and BRAKE warning lights are illuminated.

NOTE: Test numbers refer to numbers on diagnostic chart. Use only 10-megohm (minimum) DVOM for all voltage and resistance tests. For identification of circuits and terminals referenced in charts and text, see WIRING DIAGRAMS .

Fig 1: Code 157/162 Diagnostic Flow Chart

Checks for short to ground in TCS motor high circuit.
Checks for short to ground in TCS motor low circuit.
Checks of TCS motor that is internally shorted to ground.
Ensures malfunction was not due to physical circuit damage.