Test K

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

Test K1 - K3:

Test K3 - K4:

Test K5 - K7:

Test K7 - K8:

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

Normal Operation
The primary brake pressure transducer sends current to the ABS module proportional to the driver's 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 power or ground
^ circuit 3601 (WH/RD) open, short to power or ground
^ circuit 3603 (RD) open, short to power or ground
^ Primary brake pressure transducer
^ ABS module