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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 126 (Engine Controls - Pinpoint Tests - 6.0L Diesel (99P F450/550)) >> Pinpoint Test AU: Manifold Absolute Pressure (MAP)/Barometric Pressure (BARO) Correlation >> Test Procedure

Test Procedure

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  1. AU1 PRELIMINARY DIAGNOSIS FOR DTC P0069 
    • Retrieve and record all DTCs.
    • Record the freeze frame data.
    • Clear all DTCs.
    • Carry out the KOEO on-demand self-test.
    • Carry out the continuous on-demand self-test.

    Is DTC P0069 present along with other DTCs? 

    Yes No
    REFER to DIAGNOSTIC TROUBLE CODE (DTC) DESCRIPTIONS . to continue diagnosis.
    For DTC P0069 only, GO to  AU2.    		 UNABLE to duplicate the condition. CHECK for a loose connection, and damaged or corroded terminals. WIGGLE the harness attempting to recreate the fault. REPAIR as necessary. REFER to SYMPTOM CHARTS - 6.0L DIESEL if a driveability concern exists.
  2. AU2 DIAGNOSTIC TROUBLE CODE (DTC) P0069 
    NOTE: Most weather reports include a local barometric pressure that has been corrected to factor in sea level. However, the BARO PID reports the barometric pressure for the vehicle's actual altitude. Local weather conditions (high or low pressure) change the local barometric pressure by several inches of mercury.
    • Possible causes:
      • BARO sensor
      • MAP sensor
      • PCM
    • Key ON, engine OFF.
    • Access the BARO and MAP PIDs.
    • Record the BARO and MAP values.
    • Verify that the BARO PID reading is approximately the same as the barometric pressure reading for the location, day, and altitude where the vehicle is being repaired.

    Does the BARO PID reading compare with the daily barometric report for the local area? 

    Yes No
    GO to  AU3. INSTALL a new BARO sensor. CLEAR the DTCs. REPEAT the self-test.
  3. AU3 COMPARE THE BARO KOER AND KOEO READINGS 
    • Key ON, engine running.
    • Access the BARO PID.
    • Compare the BARO KOER value with the KOEO value.

    Is the BARO PID value equal to the recorded value? 

    Yes No
    GO to  AU4. INSTALL a new BARO sensor. CLEAR the DTCs. REPEAT the self-test.
  4. AU4 COMPARE THE KOER BARO AND MAP PID VALUES 
    • Key ON, engine running.
    • Access the BARO and MAP PIDs.
    • Compare the BARO and MAP values with the KOEO values.

    Is the MAP sensor reading within 30 kPa (4.3 psi) of the BARO reading? 

    Yes No
    Install a new PCM. CLEAR the DTCs. REPEAT the self-test. CHECK the MAP sensor hose for damage. REPLACE the hose if a concern is found. If no hose concern is detected, INSTALL a new MAP sensor. CLEAR the DTCs. REPEAT the self-test.
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