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Pinpoint Test

  1. CHECK THE OPERATION OF THE STOPLAMPS
    1. Ignition ON.
    2. Operate the stoplamps.

    Do the stoplamps and high mounted stoplamp operate correctly? 

    1. Yes: GO to 2  .
    2. No: REFER to SYMPTOM CHART: STOPLAMPS .
  2. CHECK THE STOPLAMP SWITCH (BOO1) AND CRUISE CONTROL DEACTIVATOR SWITCH (BOO2) PIDs 
    1. Using a scan tool, view Powertrain - Cruise Control PIDs  .
    2. Monitor the powertrain PIDs  BOO1 (stoplamp switch) and BOO2 (cruise control deactivator switch) while applying and releasing the brake pedal.
      Brake Pedal Position BOO1 PID BOO2 PID
      Released Off Off
      Applied lightly On Off
      Applied firmly On On

    Do the PID values agree with the brake pedal position? 

    1. Yes: GO to  8.
    2. No: For an incorrect BOO1 PID value, GO to 3  .

      For an incorrect BOO2 PID value, GO to 4  .

  3. CHECK THE STOPLAMP SWITCH CIRCUIT
    1. Ignition OFF.
    2. Disconnect: PCM C175B (3.5L).
    3. Disconnect: PCM C1381B (2.0L GTDI).
    4. Ignition ON.
    5. For 3.5L, while applying the brake pedal, measure:
      PCM Ground
      G08037712
      G08037713
      C175B Ground
      Pin Circuit Measurement / Action Pin Circuit
      13 CCB08 (VT/WH)
      G08037714
      		 - Ground
    6. For 2.0L GTDI, while applying the brake pedal, measure:
      PCM Ground
      G08037715
      G08037716
      C1381B Ground
      Pin Circuit Measurement / Action Pin Circuit
      30 CCB08 (VT/WH)
      G08037717
      		 - Ground

    Is the voltage greater than 11 volts? 

    1. Yes: GO to  8.
    2. No: REPAIR the circuit.
  4. CHECK THE CRUISE CONTROL DEACTIVATOR SWITCH FOR CORRECT OPERATION
    1. Ignition OFF.
    2. Disconnect: PCM C175B (3.5L).
    3. Disconnect: PCM C1381B (2.0L GTDI).
    4. For 3.5L, while firmly applying and releasing the brake pedal, measure:
      PCM Ground
      G08037719
      G08037718
      C175B Ground
      Pin Circuit Measurement / Action Pin Circuit
      46 CES09 (VT/OG)
      G08037720
      		 - Ground
    5. For 2.0L GTDI, while firmly applying and releasing the brake pedal, measure:
      PCM Ground
      G08037721
      G08037722
      C1381B Ground
      Pin Circuit Measurement / Action Pin Circuit
      16 CES09 (VT/OG)
      G08037723
      		 - Ground

    Is the resistance less than 3 ohms with the brake pedal released, and greater than 10, 000 ohms with the brake pedal firmly applied? 

    1. Yes: GO to  8.
    2. No: GO to 5  .
  5. CHECK THE CRUISE CONTROL DEACTIVATOR SWITCH GROUND CIRCUIT FOR AN OPEN
    1. Disconnect: Stoplamp Switch.
    2. Measure:
      Stoplamp Switch Ground
      G08037724
      G08037725
      C278 Ground
      Pin Circuit Measurement / Action Pin Circuit
      3 GD113 (BK/YE)
      G08037726
      		 - Ground

    Is the resistance less than 3 ohms? 

    1. Yes: GO to 6  .
    2. No: REPAIR the circuit.
  6. CHECK THE CRUISE CONTROL DEACTIVATOR SWITCH SIGNAL CIRCUIT FOR A SHORT TO GROUND
    1. Measure:
      Stoplamp Switch Ground
      G08037727
      G08037728
      C278 Ground
      Pin Circuit Measurement / Action Pin Circuit
      2 CES09 (VT/OG)
      G08037729
      		 - Ground

    Is the resistance greater than 10, 000 ohms? 

    1. Yes: GO to 7  .
    2. No: REPAIR the circuit.
  7. CHECK THE CRUISE CONTROL DEACTIVATOR SWITCH SIGNAL CIRCUIT FOR AN OPEN
    1. Connect a fused jumper wire:
      Stoplamp Switch Stoplamp Switch
      G08037730
      G08037731
      C278 C278
      Pin Circuit Measurement / Action Pin Circuit
      3 GD113 (BK/YE)
      G08037732
      		 2 CES09 (VT/OG)
    2. For 3.5L, measure:
      PCM Ground
      G08037733
      G08037734
      C175B Ground
      Pin Circuit Measurement / Action Pin Circuit
      46 CES09 (VT/OG)
      G08037735
      		 - Ground
    3. For 2.0L GTDI, measure:
      PCM Ground
      G08037736
      G08037737
      C1381B Ground
      Pin Circuit Measurement / Action Pin Circuit
      16 CES09 (VT/OG)
      G08037738
      		 - Ground

    Is the resistance less than 3 ohms? 

    1. Yes: INSTALL a new stoplamp switch. REFER to STOPLAMP SWITCH .
    2. No: REPAIR the circuit.
  8. CHECK FOR CORRECT PCM OPERATION
    1. Disconnect and inspect all the PCM connectors.
    2. Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    3. Reconnect the PCM connectors. Make sure they seat and latch correctly.
    4. Operate the system and determine if the concern is still present.

    Is the concern still present? 

    1. Yes: CHECK OASIS  for any applicable TSBs  . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs  address this concern, INSTALL a new PCM. REFER to POWERTRAIN CONTROL MODULE (PCM) - 2.0L GTDI , or POWERTRAIN CONTROL MODULE (PCM) - 3.5L TI-VCT .
    2. No: The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
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