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Pinpoint Test

  1. CHECK FOR CORRECT OPERATION OF THE COOLING SYSTEM
    1. Verify the engine cooling system and thermostat are functioning correctly.

    Does the engine cooling system and thermostat operate correctly? 

    1. Yes: GO to 2  .
    2. No: REFER to SYMPTOM CHART: ENGINE COOLING .
  2. RETRIEVE THE RECORDED DTCs  FROM THE PCM KOEO SELF-TEST
    1. Using a scan tool, perform the PCM KOEO self-test.

    Are any DTCs recorded? 

    1. Yes: REFER to SECTION 3: SYMPTOM CHARTS .
    2. No: GO to 3  .
  3. RETRIEVE THE RECORDED DTCs  FROM THE IPC SELF-TEST
    1. Using a scan tool, perform the IPC self-test.

    Are any DTCs recorded? 

    1. Yes: For DTC U0100:00, REFER to Diagnostic Routine AR: U0100:00 .

      For all other DTCs  , REFER to DTC Chart: Instrument Panel Cluster (IPC) .

    2. No: GO to 4  .
  4. CARRY OUT THE TEMPERATURE GAUGE ACTIVE COMMAND USING THE SCAN TOOL
    1. Ignition ON.
    2. Using a scan tool, view the IPC PIDs  .
    3. NOTE: Set the scan tool to 0 or full cold before beginning this step.

      Select the IPC temperature gauge (ENGCOOLNT) PID.

    4. Command the temperature gauge according to the tables:
      BASE IPC

      Scan Tool Command  Gauge Position 
      0% (-60 C (-76 F)-38 C (100 F)) Beginning of cold (C) (fill color blue)
      15% (59 C (138 F)) End of cold (C) (fill color blue)
      35% (79 C (174 F)) Just below the center of the gauge (mid-range, fill color gray)
      65% (120 C (248 F)) Just below the beginning of hot (H) (fill color gray)
      80% (121 C (250 F)) Just above hot (H) (fill color red)
      OPTIONAL IPC

      Scan Tool Command  Gauge Position 
      0% (24 C (76 F)-38 C (100 F)) Full cold (C)
      15% (59 C (138 F)) Beginning of the normal range
      45% (83 C (181 F)-109 C (228 F)) Center of the gauge
      85% (120 C (248 F)) End of the normal range
      95% (122 C (252 F)) Hot (H) (red line)

    Does the temperature gauge operate according to the above specifications? 

    1. Yes: GO to 5  .
    2. No: INSTALL a new IPC. REFER to Instrument Panel Cluster (IPC) .
  5. CHECK THE PCM TEMPERATURE PID
    NOTE: The coolant temperature should range between 0 C (32 F) and 59 C (138.1 F) with the gauge in the cold (C) range, between -60 C (-75.9 F) and 120 C (247.8 F) with the gauge in the normal or mid-range and above 121 C (249.6 F) with the gauge in the hot (H) range.
    1. Using a scan tool, view the PCM PIDs  .
    2. Ignition ON.
    3. Select the PCM temperature PID (CHT). With the engine running, monitor the PCM temperature PID.

    Does the PCM PID agree with the position of the temperature gauge indication? 

    1. Yes: The temperature gauge is operating correctly at this time.
    2. No: INSTALL a new IPC. REFER to Instrument Panel Cluster (IPC) .
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