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Home >> Mercury >> 2010 >> Milan Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1154 (Vehicle Dynamic Systems) >> Diagnostic Tests >> Anti-Lock Control - Traction Control and Stability Assist >> Pinpoint Tests >> Pinpoint Test Q: The Traction Control OFF Indicator (in the Switch) is Always/Never On >> Pinpoint Test Q: The Traction Control Off Indicator (In The Switch) Is Always/Never On

Pinpoint Test Q: The Traction Control Off Indicator (In The Switch) Is Always/Never On

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. 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. Q1 CHECK THE TRACTION CONTROL SWITCH 
    • Key in OFF position.
    • Disconnect: Traction Control Switch C280
    • Measure the resistance between traction control switch C280 pin-1, component side, and traction control switch C280 pin-6, component side while pressing and releasing the switch.
    • Is the resistance greater than 10,000 ohms with the switch released and less than 5 ohms with the switch pressed? 
    1. YES  : Go to  Q2.
    2. NO  : INSTALL a new traction control switch. CLEAR the DTC. REPEAT the self-test.
  2. Q2 CHECK CIRCUIT 959 (GY) FOR A SHORT TO VOLTAGE 
    • Disconnect: Instrument Cluster C220a
    • Key in ON position.
      • Fig 1: Checking Circuit 959 (GY) For A Short To Voltage
      GF0044726Courtesy of FORD MOTOR CO.
    • Measure the voltage between traction control switch C280-1, circuit 959 (GY), harness side and ground.
    • Is any voltage present? 
    1. YES  : REPAIR circuit 959 (GY). CLEAR the DTC. REPEAT the self-test.
    2. NO  : Go to  Q3.
  3. Q3 CHECK CIRCUIT 960 (BK/LB) FOR A SHORT TO VOLTAGE 
      Fig 2: Checking Circuit 960 (BK/LB) For A Short To Voltage
      GF0044729Courtesy of FORD MOTOR CO.
    • Measure the voltage between traction control switch C280-4, circuit 960 (BK/LB), harness side and ground.
    • Is any voltage present? 
    1. YES  : REPAIR circuit 960 (BK/LB). CLEAR the DTC. REPEAT the self-test.
    2. NO  : Go to  Q4.
  4. Q4 CHECK CIRCUIT 960 (BK/LB) FOR A SHORT TO GROUND 
    • Key in OFF position.
      • Fig 3: Checking Circuit 960 (BK/LB) For A Short To Ground
      GF0044730Courtesy of FORD MOTOR CO.
    • Measure the resistance between traction control switch C280-4, circuit 960 (BK/LB), harness side and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  Q5.
    2. NO  : REPAIR circuit 960 (BK/LB). CLEAR the DTC. REPEAT the self-test.
  5. Q5 CHECK THE INSTRUMENT CLUSTER FOR A SHORT TO GROUND 
    • Connect: Instrument Cluster C220a
      • Fig 4: Checking Instrument Cluster For A Short To Ground
      GF0044730Courtesy of FORD MOTOR CO.
    • Measure the resistance between traction control switch C280-4, circuit 960 (BK/LB), harness side and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  Q6.
    2. NO  : Go to  Q7.
  6. Q6 CHECK THE INSTRUMENT CLUSTER FOR A SHORT TO VOLTAGE 
    • Key in ON position.
      • Fig 5: Checking Instrument Cluster For A Short To Voltage
      GF0044729Courtesy of FORD MOTOR CO.
    • Measure the voltage between traction control switch C280-4, circuit 960 (BK/LB), harness side and ground.
    • Is any voltage present? 
    1. YES  : Go to  Q7.
    2. NO  : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTC. REPEAT the self-test.
  7. Q7 CHECK FOR CORRECT PCM OPERATION 
    • Key in OFF position.
    • Disconnect: Instrument Cluster C220a
    • Check the connector for:
      • corrosion.
      • pushed-out pins.
      • spread terminal.
    • Connect: Instrument Cluster C220a
    • Make sure the connector is seated correctly then operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER (IC) AND WARNING CHIMES article. CLEAR the DTC. REPEAT the self-test.
    2. NO  : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector.
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