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Home >> Ford >> 2022 >> Transit Connect Titanium, Gas/Ethanol >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Pinpoint Tests (Pinpoint Test A - Pinpoint Test H) (Except Diesel & Hybrid) >> Pinpoint Tests DM: Manifold Pressure Sensors >> Test Procedure

Test Procedure

  1. DM1 CHECK FOR DTCS 
    NOTE: This pinpoint test is designed to diagnose multiple components in the same test steps, only measure the circuits that apply to the vehicle and the component being diagnosed.
    NOTE: Diagnose circuit concerns before range or performance concerns.

    Are DTCs P0106, P0107, P0108, P0109, P012B, P012C, P012D, P012E, P0235, P0236, P0237, P0238, P025E, P1104 or U060B present? 

    Yes No
    For Ranger 2.5L, and Transit Connect 2.5L, GO to  DM3.
    For all others, GO to  DM2.    		 For symptoms without DTCs, GO to  DM2.
    For all others, RETURN to SYMPTOM CHARTS for further direction.
  2. DM2 MONITOR THE MAP PID 
    NOTE: All PIDs may not be available on all vehicles.
    • Ignition ON, engine OFF.
    • For the TCBP or TCBP/CACT sensor,
    • Access the PCM and monitor the TCBP_V (VOLT) PID.
    • For the TCIPT sensor,
    • Access the PCM and monitor the TURBO_INLET_V (VOLT) PID.
    • For all others,
    • Access the PCM and monitor the MAP_V (VOLT) PID.

    Is the voltage between 0.05 - 4.95 V? 

    Yes No
    For DTCs P0106, P012B or P0236, GO to  DM8.
    For all others, GO to  DM7.    		 GO to  DM3.
  3. DM3 CHECK THE VOLTAGE BETWEEN THE VREF AND SIGRTN CIRCUITS 
    • Ignition OFF.
    • For the MAP sensor,
    • MAP Sensor connector disconnected.
    • Measure the voltage between:
      (+) MAP Sensor Connector, Harness Side (-) MAP Sensor Connector, Harness Side
      VREF - Pin 2 SIGRTN
    • For the MAP/IAT2 sensor,
    • MAP/IAT2 Sensor connector disconnected.
    • Measure the voltage between:
      (+) MAP/IAT2 Sensor Connector, Harness Side (-) MAP/IAT2 Sensor Connector, Harness Side
      VREF SIGRTN
    • For the MAPT sensor,
    • MAPT Sensor connector disconnected.
    • Measure the voltage between:
      (+) MAPT Sensor Connector, Harness Side (-) MAPT Sensor Connector, Harness Side
      VREF SIGRTN
    • For the TCBP sensor,
    • TCBP Sensor connector disconnected.
    • Measure the voltage between:
      (+) TCBP Sensor Connector, Harness Side (-) TCBP Sensor Connector, Harness Side
      VREF SIGRTN
    • For the TCBP/CACT sensor,
    • TCBP/CACT Sensor connector disconnected.
    • Measure the voltage between:
      (+) TCBP/CACT Sensor Connector, Harness Side (-) TCBP/CACT Sensor Connector, Harness Side
      VREF SIGRTN
    • For the TCIPT sensor,
    • TCIPT Sensor connector disconnected.
    • Measure the voltage between:
      (+) TCIPT Sensor Connector, Harness Side (-) TCIPT Sensor Connector, Harness Side
      VREF SIGRTN
    • Ignition ON, engine OFF.

    Is the voltage between 4.5 - 5.5 V? 

    Yes No
    GO to  DM4. GO to PINPOINT TEST C .
  4. DM4 CHECK FOR AN OPEN 
    • Ignition OFF.
    • PCM connector disconnected.
    • For the MAP sensor,
    • Measure the resistance between:
      (+) MAP Sensor Connector, Harness Side (-) PCM Connector, Harness Side
      MAP - Pin 1 MAP
      SIGRTN SIGRTN
    • For the MAP/IAT2 sensor,
    • Measure the resistance between:
      (+) MAP/IAT2 Sensor Connector, Harness Side (-) PCM Connector, Harness Side
      MAP MAP
      SIGRTN SIGRTN
    • For the MAPT sensor,
    • Measure the resistance between:
      (+) MAPT Sensor Connector, Harness Side (-) PCM Connector, Harness Side
      MAP MAP
      SIGRTN SIGRTN
    • For the TCBP sensor,
    • Measure the resistance between
      (+) TCBP Sensor Connector, Harness Side (-) PCM Connector, Harness Side
      TCBP TCBP
      SIGRTN SIGRTN
    • For the TCBP/CACT sensor,
    • Measure the resistance between:
      (+) TCBP/CACT Sensor Connector, Harness Side (-) PCM Connector, Harness Side
      TCBP TCBP
      SIGRTN SIGRTN
    • For the TCIPT sensor,
    • Measure the resistance between:
      (+) TCIPT Sensor Connector, Harness Side (-) PCM Connector, Harness Side
      TCIP TCIP
      SIGRTN SIGRTN

    Are the resistances less than 5 ohms? 

    Yes No
    GO to  DM5. REPAIR the open circuit. Clear the PCM DTCs.
    REPEAT the self-test.
  5. DM5 CHECK FOR A SHORT TO SIGRTN OR GROUND 
    • For the MAP sensor,
    • Measure the resistance between:
      (+) MAP Sensor Connector, Harness Side (-)
      MAP - Pin 1 Ground
    • Measure the resistance between:
      (+) MAP Sensor Connector, Harness Side (-) MAP Sensor Connector, Harness Side
      MAP - Pin 1 SIGRTN
    • For the MAP/IAT2 sensor,
    • Measure the resistance between:
      (+) MAP/IAT2 Sensor Connector, Harness Side (-)
      MAP Ground
    • Measure the resistance between:
      (+) MAP/IAT2 Sensor Connector, Harness Side (-) MAP/IAT2 Sensor Connector, Harness Side
      MAP SIGRTN
    • For the MAPT sensor,
    • Measure the resistance between:
      (+) MAPT Sensor Connector, Harness Side (-)
      MAP Ground
    • Measure the resistance between:
      (+) MAPT Sensor Connector, Harness Side (-) MAPT Sensor Connector, Harness Side
      MAP SIGRTN
    • For the TCBP sensor,
    • Measure the resistance between:
      (+) TCBP Sensor Connector, Harness Side (-)
      TCBP Ground
    • Measure the resistance between:
      (+) TCBP Sensor Connector, Harness Side (-) TCBP Sensor Connector, Harness Side
      TCBP SIGRTN
    • For the TCBP/CACT sensor,
    • Measure the resistance between:
      (+) TCBP/CACT Sensor Connector, Harness Side (-)
      TCBP Ground
    • Measure the resistance between:
      (+) TCBP/CACT Sensor Connector, Harness Side (-) TCBP/CACT Sensor Connector, Harness Side
      TCBP SIGRTN
    • For the TCIPT sensor,
    • Measure the resistance between:
      (+) TCIPT Sensor Connector, Harness Side (-)
      TCIP Ground
    • Measure the resistance between:
      (+) TCIPT Sensor Connector, Harness Side (-) TCIPT Sensor Connector, Harness Side
      TCIP SIGRTN

    Are the resistances greater than 10K ohms? 

    Yes No
    GO to  DM6. REPAIR the short circuit. Clear the PCM DTCs.
    REPEAT the self-test.
  6. DM6 CHECK FOR A SHORT TO VOLTAGE 
    • Ignition ON, engine OFF.
    • For the MAP sensor,
    • Measure the voltage between:
      (+) MAP Sensor Connector, Harness Side (-)
      MAP - Pin 1 Ground
    • For the MAP/IAT2 sensor,
    • Measure the voltage between:
      (+) MAP/IAT2 Sensor Connector, Harness Side (-)
      MAP Ground
    • For the MAPT sensor,
    • Measure the voltage between:
      (+) MAPT Sensor Connector, Harness Side (-)
      MAP Ground
    • For the TCBP sensor,
    • Measure the voltage between:
      (+) TCBP Sensor Connector, Harness Side (-)
      TCBP Ground
    • For the TCBP/CACT sensor,
    • Measure the voltage between:
      (+) TCBP/CACT Sensor Connector, Harness Side (-)
      TCBP Ground
    • For the TCIPT sensor,
    • Measure the voltage between:
      (+) TCIPT Sensor Connector, Harness Side (-)
      TCIP Ground

    Is any voltage present? 

    Yes No
    REPAIR the short circuit. Clear the PCM DTCs.
    REPEAT the self-test.    		 For Ranger 2.5L, and Transit Connect 2.5L, INSTALL a new MAP sensor.
    REFER to the appropriate Electronic Engine Controls article.
    Clear the PCM DTCs. REPEAT the self-test.
    For all others, GO to  DM7.
  7. DM7 CHECK THE CIRCUITS FOR INTERMITTENT CONCERNS 
    NOTE: All PIDS may not be available on all vehicles.
    • Ignition OFF.
    • MAP Sensor connector connected.
    • MAP/IAT2 Sensor connector connected.
    • MAPT Sensor connector connected.
    • PCM connector connected.
    • TCBP Sensor connector connected.
    • TCBP/CACT Sensor connector connected.
    • TCIPT Sensor connector connected.
    • Ignition ON, engine OFF.
    • For the MAP, MAP/IAT2, or MAPT sensor,
    • Access the PCM and monitor the MAP_V (VOLT) PID.
    • For the TCBP or TCBP/CACT sensor,
    • Access the PCM and monitor the TCBP_V (VOLT) PID.
    • For the TCIPT sensor,
    • Access the PCM and monitor the TURBO_INLET_V (VOLT) PID.
    • Wiggle the harness from the component to the PCM.

    Does a sudden change in voltage occur while monitoring the PID? 

    Yes No
    REPAIR as necessary.
    Clear the PCM DTCs. REPEAT the self-test.    		 GO to  DM8.
  8. DM8 MAP VOLTAGE 
    • Ignition ON, engine OFF.
    • For the TCIPT sensor,
    • Access the PCM and monitor the TURBO_INLET_V (VOLT) PID.
    • For all others,
    • Access the PCM and monitor the MAP_V (VOLT) PID.
    • Record the PID value.
    • Ignition ON, engine running.
    • Record the PID value.

    Does the PID value change? 

    Yes No
    GO to  DM9. INSTALL a new sensor in question. REFER to the appropriate Electronic Engine Controls article.
    Clear the PCM DTCs. REPEAT the self-test.
  9. DM9 CHECK FOR KOEO BARO, MAP, TCBP VALUE CORRELATIONS 
    NOTE: All PIDS may not be available on all vehicles.
    • Ignition ON, engine OFF.
    • Access the PCM and monitor the BARO (PRESS), MAP (PRESS), TCBP (PRESS), TURBO_INLET (PRESS) and MAP_HR (PRESS) PIDs.

    Is the suspect sensor PID reading within 10.35 kPa (1.5 psi) of the other sensors? 

    Yes No
    Unable to duplicate or identify the concern at this time.
    GO to PINPOINT TEST Z .    		 For the BARO sensor, GO to PINPOINT TEST DO .
    For all others, CHECK the sensor in question for contamination or obstructions. REPAIR as necessary.
    If no concerns are present, INSTALL a new sensor in question.
    REFER to the appropriate Electronic Engine Controls article.
    Clear the PCM DTCs. REPEAT the self-test.
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