C: C1095, C1096 - Hydraulic Pump Motor
Pinpoint Test C: DTCs C1095 and C1096 ABS Hydraulic Pump Motor Circuit Failure/OpenTest C1:
Test C2-C4:
Test C5:
Normal Operation
Antilock Brake System (ABS) Diagnostic Trouble Code (DTC) C1095 sets only when the motor is initially commanded on for 100 ms (+6 ms, 6 ms), and the ABS hydraulic pump motor is then commanded off and the voltage back is read after 6 ms. If the voltage indicates the motor is spinning at less than 500 rpm there may be a locked motor. If this condition is detected 4 times then a locked motor DTC C1095 is set. The pump motor is checked for an open circuit 2 seconds after the most recent successful pump motor off command. If the pump motor feedback remains greater than 0.75 volt for more than 50 ms (+6 ms, 6 ms) after these conditions have been met, then DTC C1096 is set.
Voltage is supplied from the bussed electrical center (BEC) through circuit 534 (YE/LG) (voltage at all times). Ground is provided through circuit 1205 (BK).
Possible Causes
^ circuit 534 (YE/LG) open
^ circuit 1205 (BK) open
^ hydraulic pump motor
^ ABS module
CAUTION: Use the flex probe kit for all test connections to prevent damage to the wiring terminals. Do not use standard multimeter probes.