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Home >> Ford >> 2000 >> Contour SE, 2.0 3, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 418 (Anti-Lock Control) >> Diagnosis And Testing >> Anti-Lock Control >> Pinpoint Tests >> PINPOINT TEST E: DTC C1145 (RF), DTC C1155 (LF), DTC C1165 (RR), DTC C1175 (LR) - Wheel Speed Sensor Input Circuit Failure >> Test Procedure

Test Procedure

WARNING: This page is about a different car, the 2004 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multimeter probes.
    NOTE: Both circuits must be checked for each DTC.

  1. E1 - CHECK FOR A SHORT TO POWER
    • Key in OFF position.
    • Disconnect: ABS Module C135.
    • Disconnect: Suspect Wheel Speed Sensor.
    • Key in ON position.
    • Measure the voltage between ABS module C135 pins, harness side, and ground, as follows:
      ABS MODULE C135 CIRCUIT CHART

      DTC ABS Module C135 Pin Circuit
      C1145 (RF) 33 8-CF38 (WH/RD)
      C1145 (RF) 34 7-CF38 (YE/RD)
      C1155(LF) 45 7-CF32 (YE/BR)
      C1155(LF) 46 8-CF32 (WH/BR)
      C1165 (RR) 42 8-CF40 (WH/GN)
      C1165 (RR) 43 7-CF40 (YE/GN)
      C1175(LR) 36 7-CF34 (YE/BU)
      C1175(LR) 37 8-CF34 (WH/BU)
      Fig 1: Measuring Voltage Between ABS Module C135 Pins, Harness Side, And Ground
      G03200181Courtesy of FORD MOTOR CO.
    • Is voltage present? 
      1. Yes  : REPAIR the circuit in question. CLEAR the DTC(s). REPEAT the self-test.
      2. No  : GO to E2.
    2. NOTE: Both circuits must be checked for each DTC.

  2. E2 - CHECK FOR A SHORT TO GROUND
    • Key in OFF position.
    • Measure the resistance between ABS module C135 pins harness side and ground, as follows:
      ABS MODULE C135 CIRCUIT CHART

      DTC ABS Module C135 Pin Circuit
      C1145 (RF) 33 8-CF38 (WH/RD)
      C1145 (RF) 34 7-CF38 (YE/RD)
      C1155(LF) 45 7-CF32 (YE/BR)
      C1155(LF) 46 8-CF32 (WH/BR)
      C1165 (RR) 42 8-CF40 (WH/GN)
      C1165 (RR) 43 7-CF40 (YE/GN)
      C1175(LR) 36 7-CF34 (YE/BU)
      C1175(LR) 37 8-CF34 (WH/BU)
      Fig 2: Measuring Resistance Between ABS Module C135 Pins Harness Side And Ground
      G03200182Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 
      1. Yes  : GO to E3.
      2. No  : REPAIR the circuit in question. CLEAR the DTC. REPEAT the self-test.
    3. NOTE: Both circuits must be checked for each DTC.

  3. E3 - CHECK FOR AN OPEN
    • Measure the resistance between ABS module C135 pins, harness side and the suspect wheel speed sensor connector pins, harness side, as follows:
      ABS MODULE C135 AND SUSPECT WHEEL SPEED SENSOR CONNECTOR PINS CHART

      DTC Circuit ABS Module C135 Pin Wheel Speed Sensor Connector Pin
      C1145 (RF) 8-CF38 (WH/RD) 33 2
      C1145 (RF) 7-CF38 (YE/RD) 34 1
      C1155 (LF) 7-CF32 (YE/BR) 45 1
      C1155 (LF) 8-CF32 (WH/BR) 46 2
      C1165 (RR) 7-CF40 (YE/GN) 43 1
      C1165 (RR) 8-CF40 (WH/GN) 42 2
      C1175 (LR) 7-CF34 (YE/BU) 36 1
      C1175 (LR) 8-CF34 (WH/BU) 37 2
      Fig 3: Measuring Resistance Between ABS Module C135 Pins, Harness Side And Suspect Wheel Speed Sensor Connector Pins
      G03200183Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
      1. Yes  : GO to E4.
      2. No  : REPAIR the circuit in question. CLEAR the DTC. REPEAT the self-test.

  4. E4 - CHECK FOR SHORTED WHEEL SPEED SENSOR CIRCUITS

    • Measure the resistance between the suspect wheel speed sensor pins.
      Fig 4: Measuring Resistance Between Suspect Wheel Speed Sensor Pins
      G03200184Courtesy of FORD MOTOR CO.
    • Is the resistance greater 10,000 ohms? 
      1. Yes  : GO to E5.
      2. No  : REPAIR the circuit in question. CLEAR the DTC. REPEAT the self-test.

  5. E5 - CHECK THE ABS MODULE OUTPUT

    • Connect: ABS Module C135.
    • Key in ON position.
    • Measure the voltage between the suspect wheel speed sensor pins, harness side.
      Fig 5: Measuring Voltage Between Suspect Wheel Speed Sensor Pins Harness Side
      G03200185Courtesy of FORD MOTOR CO.
    • Is the voltage less than 9 volts? 
      1. Yes  : INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE  in this section. CLEAR the DTC. REPEAT the self-test.
      2. No  : INSTALL a new wheel speed sensor. For the front wheel speed sensor, REFER to FRONT WHEEL SPEED SENSOR AND SENSOR RING  in this section. CLEAR the DTC. REPEAT the self-test. For the rear wheel speed sensor, REFER to REAR WHEEL SPEED SENSOR AND SENSOR RING  in this section. CLEAR the DTC. REPEAT the self-test.
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