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Home >> Lincoln >> 2010 >> MKZ AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1072 (Anti-Lock Brake System) >> Diagnostic Tests >> Anti-Lock Control - Hybrid >> Pinpoint Tests >> Pinpoint Test J: DTCs C1145 (RF), C1155 (LF), C1165 (RR) or C1175 (LR) - Wheel Speed Sensor Input Circuit Failure >> PINPOINT TEST J: DTCs C1145 (RF), C1155 (LF), C1165 (RR) OR C1175 (LR) - WHEEL SPEED SENSOR INPUT CIRCUIT FAILURE

PINPOINT TEST J: DTCs C1145 (RF), C1155 (LF), C1165 (RR) OR C1175 (LR) - WHEEL SPEED SENSOR INPUT CIRCUIT FAILURE

WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.
  1. J1 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  : If the active wheel speed sensor tool is available, go to  J2. If the active wheel speed sensor tool is not available, go to  J4.
    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 ABS Module DTC Chart .
  2. J2 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? 
    1. YES  : Go to  J3.
    2. NO  : Go to  J6.
  3. J3 CHECK THE WHEEL SPEED SENSOR OUTPUT WITH THE SPECIAL TOOL 
    • Raise the suspect wheel until it can spin freely. Refer to JACKING AND LIFTING article.
    • 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? 
    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 . For the rear wheel speed sensor, REFER to Wheel Speed Sensor - Rear . 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 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.

  4. J4 CHECK THE WHEEL SPEED SENSOR CIRCUITS FOR A SHORT TO POWER  
    NOTE: No measurements should be taken with the wheel speed sensor connected. Damage to the wheel speed sensor will result.
    NOTE: Both circuits must be checked for each DTC.
    • Key in OFF position.
    • Disconnect: ABS Module C1462
    • Disconnect: Suspect Wheel Speed Sensor
    • Key in ON position.
    • For DTC C1145,  measure the voltage between ground and:
      • ABS module C1462-33, circuit RCA19 (VT), harness side.
      • ABS module C1462-34, circuit VCA05 (GY/VT), harness side.
      • Fig 1: Measuring Voltage
      GF0042282Courtesy of FORD MOTOR CO.
    • For DTC C1155,  measure the voltage between ground and:
      • ABS module C1462-45, circuit VCA03 (VT/WH), harness side.
      • ABS module C1462-46, circuit RCA17 (YE), harness side.
      • Fig 2: Measuring Voltage
      GF0042283Courtesy of FORD MOTOR CO.
    • For DTC C1165,  measure the voltage between ground and:
      • ABS module C1462-42, circuit RCA20 (BN), harness side.
      • ABS module C1462-43, circuit VCA06 (WH/OG), harness side.
      • Fig 3: Measuring Voltage
      GF0042284Courtesy of FORD MOTOR CO.
    • For DTC C1175,  measure the voltage between ground and:
      • ABS module C1462-36, circuit VCA04 (BU/OG), harness side.
      • ABS module C1462-37, circuit RCA18 (BN/GN), harness side.
      • Fig 4: Measuring Voltage
      GF0042285Courtesy of FORD MOTOR CO.
    • Is voltage present? 
    1. YES  : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
    2. NO  : Go to  J5.
  5. J5 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 C1462-33, circuit RCA19 (VT), harness side.
      • ABS module C1462-34, circuit VCA05 (GY/VT), harness side.
      • Fig 5: Measuring Resistance
      GF0042286Courtesy of FORD MOTOR CO.
    • For DTC C1155,  measure the resistance between ground and:
      • ABS module C1462-45, circuit VCA03 (VT/WH), harness side.
      • ABS module C1462-46, circuit RCA17 (YE), harness side.
      • Fig 6: Measuring Resistance
      GF0042287Courtesy of FORD MOTOR CO.
    • For DTC C1165,  measure the resistance between ground and:
      • ABS module C1462-42, circuit RCA20 (BN), harness side.
      • ABS module C1462-43, circuit VCA06 (WH/OG), harness side.
      • Fig 7: Measuring Resistance
      GF0042288Courtesy of FORD MOTOR CO.
    • For DTC C1175,  measure the resistance between ground and:
      • ABS module C1462-36, circuit VCA04 (BU/OG), harness side.
      • ABS module C1462-37, circuit RCA18 (BN/GN), harness side.
      • Fig 8: Measuring Resistance
      GF0042289Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 
    1. YES  : Go to  J6.
    2. NO  : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
  6. J6 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 C1462
    • Disconnect: Suspect Wheel Speed Sensor
    • For DTC C1145,  measure the resistance between:
      • ABS module C1462-33, circuit RCA19 (VT), harness side and RF wheel speed sensor C160-1, circuit RCA19 (VT), harness side.
      • ABS module C1462-34, circuit VCA05 (GY/VT), harness side and RF wheel speed sensor C160-2, circuit VCA05 (GY/VT), harness side.
      • Fig 9: Measuring Resistance
      GF0042290Courtesy of FORD MOTOR CO.
    • For DTC C1155,  measure the resistance between:
      • ABS module C1462-45, circuit VCA03 (VT/WH), harness side and LF wheel speed sensor C150-2, circuit VCA03 (VT/WH), harness side.
      • ABS module C1462-46, circuit RCA17 (YE), harness side and LF wheel speed sensor C150-1, circuit RCA17 (YE), harness side.
      • Fig 10: Measuring Resistance
      GF0042291Courtesy of FORD MOTOR CO.
    • For DTC C1165,  measure the resistance between:
      • ABS module C1462-42, circuit RCA20 (BN), harness side and RR wheel speed sensor C426-2, circuit RCA20 (BN), harness side.
      • ABS module C1462-43, circuit VCA06 (WH/OG), harness side and RR wheel speed sensor C426-1, circuit VCA06 (WH/OG), harness side.
      • Fig 11: Measuring Resistance
      GF0042292Courtesy of FORD MOTOR CO.
    • For DTC C1175,  measure the resistance between:
      • ABS module C1462-36, circuit VCA04 (BU/OG), harness side and LR wheel speed sensor C440-1, circuit VCA04 (BU/OG), harness side.
      • ABS module C1462-37, circuit RCA18 (BN/GN), harness side and LR wheel speed sensor C440-2, circuit RCA18 (BN/GN), harness side.
      • Fig 12: Measuring Resistance
      GF0042293Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    1. YES  : Go to  J7.
    2. NO  : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
  7. J7 CHECK FOR SHORTED WHEEL SPEED SENSOR CIRCUITS 
    • Measure the resistance between the suspect wheel speed sensor pins, harness side.
      • Fig 13: Checking Circuits For Short Together
      GF0024666Courtesy of FORD MOTOR CO.
    • Is the resistance greater 10,000 ohms? 
    1. YES  : Go to  J8.
    2. NO  : REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
  8. J8 CHECK THE ABS MODULE OUTPUT 
    • Connect: ABS Module C1462
    • Key in ON position.
    • Measure the voltage between the suspect wheel speed sensor pins, harness side.
      • Fig 14: Checking Circuit For Voltage
      GF0024667Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. 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.
    2. NO  : Go to  J9.
  9. J9 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 is seated correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new HCU. REFER to Hydraulic Control Unit (HCU) - Hybrid . TEST the system for normal operation.
    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.
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