K: C1288 and C1440 (ABS With Stability Assist) Brake Pressure Transducer Input Circuit Failure

Pinpoint Test K: DTC C1288 and C1440 (ABS with Stability Assist) Brake Pressure Transducer Input Circuit Failure

Normal Operation
The primary brake pressure transducer sends current to the anti-lock brake system (ABS) module proportional to the drivers brake pedal application.

Reference voltage is supplied by circuit 3601 (WH/RD). Ground is provided through circuit 3603 (RD). The transducer current is supplied by circuit 3600 (RD/WH).

Possible Causes
^ circuit 3600 (RD/WH) open, short to voltage, or short to ground
^ circuit 3601 (WH/RD) open, short to voltage, or short to ground
^ circuit 3603 (RD) open, short to voltage, or short to ground
^ primary brake pressure transducer
^ ABS module

Tests K1 - K2:

Tests K2 (continued) - K4:

Tests K4 (continued) - K5:

Tests K6 - K8:

PINPOINT TEST K: DTC C1288 AND C1440 (ABS WITH STABILITY ASSIST) BRAKE PRESSURE TRANSDUCER INPUT CIRCUIT FAILURE

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