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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1334 (Engine Controls - Pinpoint Tests - 6.0L (99P F450/550) Diesel) >> Pinpoint Test AW: Intake Air Temperature (IAT)/Intake Air Temperature 2 (IAT2) Sensor Correlation >> Test Procedure

Test Procedure

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  1. AW1 PRELIMINARY DIAGNOSIS FOR DIAGNOSTIC TROUBLE CODE (DTC) P2199 
    • Retrieve and record all DTCs.
    • Record the freeze frame data.

    Is DTC P2199 present? 

    Yes No
    For DTC P2199, with other DTCs present, REFER to DIAGNOSTIC TROUBLE CODE (DTC) DESCRIPTIONS for appropriate diagnosis.
    For DTC P2199, GO to  AW2.    		 UNABLE to duplicate the condition. CHECK for a loose connection, and damaged or corroded terminals. WIGGLE the harness attempting to recreate the concern. REPAIR as necessary. REFER to SYMPTOM CHARTS , if a driveability concern exists.
  2. AW2 DIAGNOSTIC TROUBLE CODE (DTC) P2199 
    • Possible causes:
      • IAT sensor
      • IAT2 sensor
      • PCM
    • Key in OFF position.
    • Cold soak the vehicle overnight.
    • Key ON, engine OFF.
    • Access the PCM and monitor the IAT and IAT2 PIDs.

    Are both temperature readings within 6°C (10°F) of ambient temperature? 

    Yes No
    GO to  AW3. INSTALL a new sensor for the one that is not within range.
    CLEAR the DTCs. REPEAT the self-test.
  3. AW3 CHECK KOER IAT AND IAT 2 VALUES 
    • Key ON, engine running.
    • Access the PCM and monitor the IAT and IAT2 PIDs.

    Are the sensor values within 40°C (104°F) of each other? 

    Yes No
    UNABLE to duplicate the concern. Cold soak the vehicle overnight and REPEAT the self-test. If no concern is present, GO to  AW4. INSTALL a new IAT sensor.
    CLEAR the DTCs. REPEAT the self-test.
  4. AW4 CHECK FOR CORRECT PCM OPERATION 
    • Disconnect all the PCM connectors.
    • Visually inspect for:
      • pushed out pins
      • corrosion
    • Connect all the PCM connectors and make sure they seat correctly.
    • Carry out the PCM self-test and verify the concern is still present.

    Is the concern still present? 

    Yes No
    INSTALL a new PCM. REFER to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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