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Test B2: DTC C1095 - Abs Hydraulic Pump Motor Circuit Failure (Abs With TCS)

  1. Turn ignition on. Check ABS pump for continuous operation. If pump motor runs continuously, replace TCS module. If pump motor does not run continuously, go to next step.
  2. Turn ignition on. Using scan tool, actuate pump motor. If ABS pump motor does not run for approximately 3 seconds, use scan tool to trigger TCS module command PMP MOTOR OFF, and go to next step. If ABS pump motor runs for approximately 3 seconds, clear DTC. Check Yellow ABS warning indicator while driving vehicle at greater than 20 MPH. DO NOT apply brakes. If Yellow ABS warning indicator illuminates, retrieve DTC. If DTC C1095 is retrieved, replace HCU. Using scan tool, clear DTCs and repeat self-test. If Yellow ABS warning indicator does not illuminate, system is okay.
  3. Disconnect TCS connector (C830). Using DVOM, measure voltage between TCS connector terminal No. 33 (Red wire) and ground. See WIRING DIAGRAMS . If voltage is greater than 10 volts, go to next step. If voltage is less than 10 volts, repair Red wire.
  4. Measure resistance between TCS connector terminal No. 15 (Black/Yellow wire) and ground. Measure resistance between TCS connector terminal No. 32 (Black/Blue wire) and ground. If resistances are less than 5 ohms, replace TCS module. If resistances are greater than 5 ohms, repair faulty circuit.
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