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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1739 (Vehicle Dynamic Systems) >> Diagnosis And Testing >> Anti-Lock Control >> Pinpoint Tests >> Pinpoint Test E: DTCs C1233 (LF), C1234 (RF), C1235 (RR) and C1236 (LR) - Wheel Speed Sensor Signal Fault >> PINPOINT TEST E: DTCs C1233 (LF), C1234 (RF), C1235 (RR) AND C1236 (LR) - WHEEL SPEED SENSOR SIGNAL FAULT

PINPOINT TEST E: DTCs C1233 (LF), C1234 (RF), C1235 (RR) AND C1236 (LR) - WHEEL SPEED SENSOR SIGNAL FAULT

WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: The Flex Probe Kit must be used for all test connections. Use of standard multimeter probes may damage wiring terminals
  1. E1 CHECK THE DTCs FROM THE SELF-TEST 
    • Using the recorded results from the ABS module self-test:
    • Are DTCs C1145, C1155, C1165 or C1175 present? 

    Yes  : GO to PINPOINT TEST D .

    No  : GO to E2.

  2. E2 MONITOR THE WHEEL SPEED SENSOR PIDs 
    • Connect the scan tool.
    • Key in ON position.
    • Enter the following diagnostic mode on the scan tool: ABS Module PIDs.
    • Using the scan tool, monitor the ABS module wheel speed sensor PIDS while driving the vehicle at a constant speed.
    • Are all wheel speed sensor PID values similar? 

    Yes  : CLEAR the DTCs. DRIVE the vehicle. RETRIEVE the DTCs. If DTC C1233, C1234, C1235 or C1236 is present, GO to  E12.

    No  : If the active wheel speed sensor tool is available, GO to E3. If the active wheel speed sensor tool is not available, GO to  E6.

  3. E3 CHECK THE ABS MODULE OUTPUT USING THE SPECIAL TOOL 
    • Key in OFF position.
    • Disconnect: Suspect Wheel Speed Sensor.
    • Connect the special tool to the wheel speed sensor connectors.
    • Key in ON position.
    • Select the correct system polarity on the special tool and turn the special tool power switch to the ON position.
    • Is the module output LED illuminated? 

    Yes  : GO to  E5.

    No  : GO to E4.

  4. E4 CHECK THE WHEEL SPEED SENSOR CIRCUITS FOR AN OPEN 
    NOTE: Both circuits must be checked for each DTC.
    • Key in OFF position.
    • Disconnect: ABS Module C135.
    • For DTC C1233:  measure the resistance between:
      • ABS module C135-45, circuit VCA03 (VT/WH), harness side and LF wheel speed sensor C150-1, circuit VCA03 (VT/WH), harness side.
      • ABS module C135-46, circuit RCA17 (YE), harness side and LF wheel speed sensor C150-2, circuit RCA17 (YE), harness side.
    • For DTC C1234:  measure the resistance between:
      • ABS module C135-34, circuit VCA05 (GY/VT), harness side and RF wheel speed sensor C160-1, circuit VCA05 (GY/VT), harness side.
      • ABS module C135-33, circuit RCA19 (VT), harness side and RF wheel speed sensor C160-2, circuit RCA19 (VT), harness side.
    • For DTC C1235:  measure the resistance between:
      • ABS module C135-43, circuit VCA06 (WH/OG), harness side and RR wheel speed sensor C426-3, circuit VCA06 (WH/OG), harness side.
      • ABS module C135-42, circuit RCA20 (BN), harness side and RR wheel speed sensor C426-1, circuit RCA20 (BN), harness side.
    • For DTC C1236:  measure the resistance between:
      • ABS module C135-36, circuit VCA04 (BU/OG), harness side and LR wheel speed sensor C440-3, circuit VCA04 (BU/OG), harness side.
      • ABS module C135-37, circuit RCA16 (BN/GN), harness side and LR wheel speed sensor C440-1, circuit RCA16 (BN/GN), harness side.
    • Are the resistances less than 5 ohms? 

    Yes  : GO to  E12.

    No  : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.

  5. E5 CHECK THE WHEEL SPEED SENSOR OUTPUT WITH THE SPECIAL TOOL 
    • Raise the suspect wheel until it can spin freely. Refer to JACKING & LIFTING .
    • While monitoring the special tool, slowly spin the suspect wheel.
    • Do the sensor output LEDs illuminate and flash and is the current overload LED not illuminated? 

    Yes  : INSPECT the wheel speed sensor tone ring for damage and looseness. INSTALL new components as necessary. If the tone ring is OK, the concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.

    No  : If the current level LED is not illuminated and the sensor output LEDs do not illuminate or if the current level LED is illuminated red, INSTALL a new wheel speed sensor. For the front wheel speed sensor, REFER to WHEEL SPEED SENSOR - FRONT . For the rear wheel speed sensor, REFER to WHEEL SPEED SENSOR - REAR . CLEAR the DTCs. REPEAT the self-test.

    If the current level LED not is illuminated and the sensor output LEDs illuminate green but do not flash, INSPECT the wheel speed sensor tone ring and INSTALL new if necessary. If the tone ring is OK, INSTALL a new wheel speed sensor. For the front wheel speed sensor, REFER to WHEEL SPEED SENSOR - FRONT . For the rear wheel speed sensor, REFER to WHEEL SPEED SENSOR - REAR . CLEAR the DTCs. REPEAT the self-test.

  6. E6 CHECK FOR CORRECT ABS MODULE OUTPUT 
    • Key in OFF position.
    • Disconnect: Suspect Wheel Speed Sensor.
    • Key in ON position.
    • For DTC C1233,  measure the voltage between:
      • RF wheel speed sensor C160-1, circuit VCA05 (GY/VT), harness side and RF wheel speed sensor C160-2, circuit RCA19 (VT), harness side.
    • For DTC C1234,  measure the voltage between:
      • LF wheel speed sensor C150-1, circuit VCA03 (VT/WH), harness side and LF wheel speed sensor C150-2, circuit RCA17 (YE), harness side.
    • For DTC C1235,  measure the voltage between:
      • RR wheel speed sensor C426-3, circuit VCA06 (WH/OG), harness side and RR wheel speed sensor C426-1, circuit RCA20 (BN), harness side.
    • For DTC C1236,  measure the voltage between:
      • LR wheel speed sensor C440-3, circuit VCA04 (BU/OG), harness side and LR wheel speed sensor C440-1, circuit RCA16 (BN/GN), harness side.
    • Are the voltages greater than 10 volts? 

    Yes  : INSTALL a new wheel speed sensor. REFER to WHEEL SPEED SENSOR - FRONT  or WHEEL SPEED SENSOR - REAR . CLEAR the DTCs. REPEAT the self-test.

    No  : GO to E7.

  7. E7 INSPECT THE WHEEL SPEED SENSOR MOUNTING 
    • Key in OFF position.
    • With the vehicle in NEUTRAL, position it on a hoist. Refer to JACKING & LIFTING .
    • Inspect the suspect wheel speed sensor(s) for looseness.
    • Is the wheel speed sensor(s) loose? 

    Yes  : TIGHTEN the wheel speed sensor bolt to specification. REFER to SPECIFICATIONS .

    No  : GO to E8.

  8. E8 INSPECT THE WHEEL SPEED SENSOR FOR DAMAGE 
      CAUTION: Inspect the wheel speed sensor wire carefully with a good light source. Failure to verify damage in the wheel speed sensor wire can lead to unnecessary installation of a new component.
    • Inspect the suspect wheel speed sensor(s) for general damage.
    • Is the wheel speed sensor(s) OK? 

    Yes  : GO to E9.

    No  : INSTALL a new wheel speed sensor. REFER to WHEEL SPEED SENSOR - FRONT  or WHEEL SPEED SENSOR - REAR . CLEAR the DTCs. REPEAT the self-test.

  9. E9 INSPECT THE WHEEL SPEED SENSOR RING FOR DAMAGE 
    • Remove the suspect wheel speed sensor(s). Refer to WHEEL SPEED SENSOR - FRONT  or WHEEL SPEED SENSOR - REAR .
    • Inspect the suspect wheel speed sensor ring(s) for damage or missing teeth. Rotate the wheel to verify that no teeth are missing.
    • Is the wheel speed sensor ring(s) OK? 

    Yes  : GO to E10.

    No  : INSTALL new wheel bearing and wheel hubs as necessary. REFER to FRONT SUSPENSION for the front wheel bearing and wheel hub or REAR SUSPENSION for the rear wheel bearing and wheel hub.

  10. E10 INSPECT THE WHEEL BEARINGS FOR DAMAGE 

    Yes  : GO to E11.

    No  : INSTALL new wheel bearing and wheel hubs as necessary. REFER to FRONT SUSPENSION for the front wheel bearing and wheel hub or REAR SUSPENSION for the rear wheel bearing and wheel hub.

  11. E11 RECHECK THE WHEEL SPEED SENSOR PIDs 
    • Connect: Suspect Wheel Speed Sensor.
    • Connect the scan tool.
    • Key in ON position.
    • Enter the following diagnostic mode on the scan tool: ABS Module PIDs.
    • Using the scan tool, monitor the ABS module wheel speed sensor PIDs while driving the vehicle at a constant speed.
    • Are all wheel speed sensor PID values similar? 

    Yes  : The vehicle is OK. The concern may have been caused by a loose or damaged wheel speed sensor, a damaged wheel speed sensor ring or a damaged wheel bearing.

    No  : GO to E12.

  12. E12 CHECK FOR CORRECT ABS MODULE OPERATION 
    • Disconnect the ABS module connector.
    • Check for:
      • Corrosion.
      • Pushed-out pins.
      • Spread terminals.
    • Connect the ABS module connector and make sure it seats correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 

    Yes  : INSPECT the wheel speed sensor tone ring for damage and looseness. INSTALL new components as necessary. If the tone ring is OK, INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . CLEAR the DTCs. REPEAT the self-test.

    No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.

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