LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1601 (Anti-Lock Brake System - Vehicle Dynamic Systems) >> Diagnostic Tests >> Anti-Lock Control >> Pinpoint Tests >> Pinpoint Test B: DTCs C1145, C1155, C1165 and C1175 - Wheel Speed Sensor Input Circuit Failure >> PINPOINT TEST B: DTCs C1145, C1155, C1165 AND C1175 - WHEEL SPEED SENSOR INPUT CIRCUIT FAILURE

PINPOINT TEST B: DTCs C1145, C1155, C1165 AND C1175 - WHEEL SPEED SENSOR INPUT CIRCUIT FAILURE

WARNING: This page is about a different car, the 2009 Mercury Sable, 2009 Ford Taurus X, and 2009 Ford Taurus. 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 multi-meter probes.
NOTE: If the ignition switch is turned to the ON position when one or more wheel speed sensors are disconnected, the ABS module will disable the output to that sensor. Make sure all test connections are made at the wheel speed sensor connector before turning the ignition key to the ON position.
  1. B1 CHECK FOR FAULT REPEATABILITY 
    • Connect the diagnostic tool.
    • Key in ON position.
    • Enter the following diagnostic mode on the diagnostic tool: Clear the Continuous DTCs
    • Drive the vehicle at least 16 km/h (10 mph).
    • Retrieve and document continuous DTCs.
    • Is DTC C1145, C1155, C1165 or C1175 retrieved? 
    1. YES  : For DTCs C1145 and C1155  , if the Active Wheel Speed Sensor Tester is available, go to  B2. If the Active Wheel Speed Sensor Tester is not available, go to  B4.

      For DTCs C1165 and C1175  , go to  B4.

    2. NO  : INSPECT the wheel speed sensors, wheel speed sensor wiring and wheel speed sensor tone rings. REPAIR or INSTALL new as necessary. If any other DTCs are retrieved, go to the ABS Module DTC Table .
  2. B2 CHECK THE ABS MODULE OUTPUT USING THE ACTIVE WHEEL SPEED SENSOR TESTER 
    • Key in OFF position.
    • Disconnect: Suspect Wheel Speed Sensor
    • Connect the Active Wheel Speed Sensor Tester to the wheel speed sensor connectors.
    • Select the correct system polarity on the tester and turn the tester power switch to the ON position.
    • Key in ON position.
    • Is the module output LED illuminated? 
    1. YES  : Go to  B3.
    2. NO  : Go to  B6.
  3. B3 CHECK THE WHEEL SPEED SENSOR OUTPUT WITH THE ACTIVE WHEEL SPEED SENSOR TESTER 
    • Raise the suspect wheel until it can spin freely. Refer to JACKING AND LIFTING article.
    • While monitoring the Active Wheel Speed Sensor Tester, slowly spin the suspect wheel.
    • Do the sensor output LEDs illuminate and flash and is the current overload LED not illuminated? 
    1. YES  : 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.
    2. 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 . CLEAR the DTCs. REPEAT the self-test.

      If the current level LED is not illuminated and the sensor output LEDs illuminate green but do not flash, INSPECT the wheel hub and bearing (tone ring is part of the wheel bearing), REFER to Wheel Bearing Check in NOISE, VIBRATION AND HARSHNESS article. If the wheel hub and bearing are OK, INSTALL a new wheel speed sensor. For the front wheel speed sensor, REFER to Wheel Speed Sensor - Front . CLEAR the DTCs. REPEAT the self-test.

  4. B4 CHECK THE WHEEL SPEED SENSOR CIRCUITS FOR A SHORT TO VOLTAGE 
    NOTE: Both circuits must be checked for each DTC.
    • Key in OFF position.
    • Disconnect: ABS Module C135
    • Disconnect: Suspect Wheel Speed Sensor
    • Key in ON position.
    • For DTC C1145,  measure the voltage between ground and:
      • ABS module C135-18, circuit VCA05 (GY/VT), harness side.
      • ABS module C135-6, circuit RCA19 (VT), harness side.
    • For DTC C1155,  measure the voltage between ground and:
      • ABS module C135-34, circuit RCA17 (YE), harness side.
      • ABS module C135-21, circuit VCA03 (VT/WH), harness side.
    • For DTC C1165,  measure the voltage between ground and:
      • ABS module C135-31, circuit RCA20 (BN), harness side.
      • ABS module C135-19, circuit VCA06 (WH/OG), harness side.
    • For DTC C1175,  measure the voltage between ground and:
      • ABS module C135-33, circuit VCA04 (BU/OG), harness side.
      • ABS module C135-20, circuit RCA18 (BN/GN), harness side.
    • Is any voltage present? 
    1. YES  : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
    2. NO  : Go to  B5.
  5. B5 CHECK THE WHEEL SPEED SENSOR CIRCUITS FOR A SHORT TO GROUND 
    NOTE: Both circuits must be checked for each DTC.
    • Key in OFF position.
    • For DTC C1145,  measure the resistance between ground and:
      • ABS module C135-18, circuit VCA05 (GY/VT), harness side.
      • ABS module C135-6, circuit RCA19 (VT), harness side.
    • For DTC C1155,  measure the resistance between ground and:
      • ABS module C135-34, circuit RCA17 (YE), harness side.
      • ABS module C135-21, circuit VCA03 (VT/WH), harness side.
    • For DTC C1165,  measure the resistance between ground and:
      • ABS module C135-31, circuit RCA20 (BN), harness side.
      • ABS module C135-19, circuit VCA06 (WH/OG), harness side.
    • For DTC C1175,  measure the resistance between ground and:
      • ABS module C135-33, circuit VCA04 (BU/OG), harness side.
      • ABS module C135-20, circuit RCA18 (BN/GN), harness side.
    • Are the resistances greater than 10,000 ohms? 
    1. YES  : Go to  B6.
    2. NO  : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
  6. B6 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
    • Disconnect: Suspect Wheel Speed Sensor
    • Measure the resistance between the ABS module connector, harness side and the suspect wheel speed sensor connector, harness side as indicated in the following chart:
      Wheel Speed Sensor Circuit ABS Module
      DTC C1145 - Wheel Speed Sensor RF Input Circuit Failure 
      C160-1 RCA19 (VT) C135-6
      C160-2 VCA05 (GY/VT) C135-18
      DTC C1155 - Wheel Speed Sensor LF Input Circuit Failure 
      C150-1 RCA17 (YE) 135-34
      C150-2 VCA03 (VT/WH) C135-21
      DTC C1165 - Wheel Speed Sensor RR Input Circuit Failure 
      C3116-1 VCA06 (WH/OG) C135-19
      C3116-2 RCA20 (BN) C135-31
      DTC C1175 - Wheel Speed Sensor LR Input Circuit Failure 
      C3117-1 RCA18 (BN/GN) C135-20
      C3117-2 VCA04 (BU/OG) C135-33
    • Are the resistances less than 5 ohms? 
    1. YES  : Go to  B7.
    2. NO  : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the ABS self-test.
  7. B7 CHECK FOR SHORTED WHEEL SPEED SENSOR CIRCUITS 
    • Measure the resistance between the suspect wheel speed sensor pins, harness side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
    2. NO  : Go to  B8.
  8. B8 CHECK THE ABS MODULE OUTPUT 
    NOTE: Make sure all test connections are made at the wheel speed sensor before the ignition key is turned to the ON position.
    • Key in OFF position.
    • Connect: ABS Module C135
    • Connect the meter to the suspect wheel speed sensor electrical connector, harness side.
    • Key in ON position.
    • Measure the voltage between the suspect wheel speed sensor pins, harness side.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  B10.
    2. NO  : Go to  B9.
  9. B9 CHECK FOR CORRECT ABS MODULE OPERATION 
    • Disconnect: ABS Module C135
    • 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? 
    1. YES  : INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CLEAR the DTCs. REPEAT the self-test.
    2. 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.
  10. B10 CHECK FOR CORRECT WHEEL SPEED SENSOR OPERATION 
    • Disconnect: Wheel Speed Sensor Connector
    • Check for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect the wheel speed sensor connector and make sure it seats correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new wheel speed sensor. REFER to Wheel Speed Sensor - Front , Wheel Speed Sensor - Rear, Front Wheel Drive (FWD)  or Wheel Speed Sensor - Rear, All Wheel Drive (AWD) . CLEAR the DTCs. REPEAT the self-test.
    2. 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.
scientia non olet · About LEMON Manuals