G: C1277 and C1278 Steering Wheel Angle 1 and 2 Circuit Failure/Faulted

Pinpoint Test G: DTC C1277 and C1278 Steering Wheel Angle 1 and 2 Circuit Failure/Faulted

Normal Operation
The steering position sensor monitors the steering wheel position when the toothed wheel on the steering shaft passes through its magnetic field.

The steering wheel rotation (in degrees) is sent to the anti-lock brake system (ABS) module through circuit 1572 (DG) and circuit 1573 (YE). Voltage is supplied by the ABS module through circuit 1576 (TN/BK), which is spliced to circuit 1003 (GY/YE). Ground is provided by the ABS module through circuit 1577 (BK).

Possible Causes
^ circuit 1003 (GY/YE) open or short to ground
^ circuit 1572 (DG) open, short to ground, or short to voltage
^ circuit 1573 (YE) open, short to ground, or short to voltage
^ circuit 1576 (TN/BK) open or short to ground
^ circuit 1577 (BK) open, short to ground, or short to voltage
^ steering position sensor (part of the clockspring)

Tests G1 - G3:

Tests G3 (continued) - G5:

Tests G5 (continued) - G6:

PINPOINT TEST G: DTC C1277 AND C1278 STEERING WHEEL ANGLE 1 AND 2 CIRCUIT FAILURE/FAULTED

CAUTION: Use the flex probe kit for all test connections to prevent damage to the wiring terminals. Do not use standard multimeter probes.