Possible Causes

BJB fuse 17 (40A)
Circuit open
Circuit shorted
Hydraulic control unit
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.

DTCS C1095 AND C1096-ABS HYDRAULIC PUMP MOTOR CIRCUIT FAILURE/OPEN - PINPOINT TEST REFERENCE

PINPOINT TEST 5		DTCS C1095 AND C1096 - ABS HYDRAULIC PUMP MOTOR CIRCUIT FAILURE/OPEN
STEP	INSPECTION		ACTION
1	CHECK THE ABS PUMP MOTOR Key ON. Is the pump motor on constantly?	Yes	Go to step 4.
1		No	Go to next step.
2	CHECK CIRCUIT (R) FOR AN OPEN Key OFF. Disconnect: ABS module connector. Key ON. Measure the voltage between ABS module circuit (R), harness side and ground. Is the voltage greater than 10 volts?	Yes	Go to next step.
2		No	Verify BJB fuse 17 (40A) is OK. If OK, repair circuit (R) for an open. Clear the DTCs. Test the system for normal operation.
3	CHECK CIRCUIT (B) FOR AN OPEN Key OFF. Measure the resistance between ABS module 0413-102 pin 18, circuit (B), harness side and ground. Is the resistance less than 5 ohms?	Yes	Go to next step.
3		No	Repair circuit (B) for an open. Clear DTCs. Test the system for normal operation.
4	CHECK FOR CORRECT ABS MODULE OPERATION Disconnect all ABS module connector. Check for: corrosion. pushed-out pins. spread terminals. Connect all ABS connector and make sure it is seated correctly. Operate the system and verify the concern is still present. Is the concern still present?	Yes	Go to next step.
4		No	The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. Repeat the self-test with the brake pedal not applied.
5	CHECK THE ABS PUMP MOTOR FOR CORRECT OPERATION Key OFF. Remove the ABS module. see ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . Connect a fused (50A) jumper wire between the positive battery terminal and the pump motor positive terminal on the hydraulic control unit (HCU). Momentarily connect a jumper wire between the negative battery terminal and the pump motor negative terminal on the HCU. Does the ABS pump motor operate?	Yes	Install a new ABS module. see ANTI-LOCK BRAKE SYSTEM (ABS) MODULE After the repairs, CARRY OUT the self-test with the brake pedal not applied.
5		No	INSTALL a new HCU. see HYDRAULIC CONTROL UNIT (HCU) . Clear the DTCs. Carry out the self-test with the brake pedal not applied.