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Diagnostic Test

WARNING: This page is about a different car, the 2009 Dodge Caliber. However, it is still accessible from the selected car via links, so may be relevant.
  1. DTC IS ACTIVE 
    1. Start the engine and allow it to reach normal operating temperature.
      WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.
      NOTE: Diagnose and repair any system voltage or sensor supply voltage DTCs before continuing with this test.
    2. With the scan tool, select View DTCs.

      Is the status Active for this DTC?

      Yes 

      • Go to step  2

      No 

  2. (K857) 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE 
    Fig 1: Checking 5-Volt Supply Circuit
    GC0103561Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the Throttle Inlet Pressure Sensor connector.
    3. Disconnect the Powertrain Control Module (PCM) connector.
    4. Turn the ignition on.
    5. Measure the voltage of the (K857) 5 Volt Supply circuit in the Throttle Inlet Pressure Sensor harness connector.

      Is there any voltage present?

      Yes 

      No 

      • Go to step  3
  3. (K153) TIP SIGNAL CIRCUIT SHORTED TO VOLTAGE 
    Fig 2: Checking TIP Signal Circuit
    GC0103563Courtesy of CHRYSLER LLC
    1. Measure the voltage of the (K153) TIP Signal circuit in the Throttle Inlet Pressure Sensor harness connector.

      Is there any voltage present?

      Yes 

      No 

      • Go to step  4
  4. (K153) TIP SIGNAL CIRCUIT SHORTED TO THE (K857) 5 VOLT SUPPLY CIRCUIT 
    Fig 3: Checking 5-Volt Supply Circuit
    GC0103562Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Measure the resistance between the (K153) TIP Signal circuit and the (K857) 5 Volt Supply in the Throttle Inlet Pressure Sensor harness connector.

      Is the resistance below 100 ohms?

      Yes 

      No 

      • Go to step  5
  5. (K153) TIP SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE 
    Fig 4: Checking TIP Signal Circuit
    GC0103566Courtesy of CHRYSLER LLC
    CAUTION: When checking circuits at the Powertrain Control Module (PCM), be careful not to damage or distort the connector terminals. Improper measurement technique could result in poor pin to terminal contact.
    1. Measure the resistance of the (K153) TIP Signal circuit between the Throttle Inlet Pressure Sensor harness connector and the Powertrain Control Module (PCM) harness connector.

      Is the resistance below 5.0 ohms?

      Yes 

      • Go to step  6

      No 

  6. (K152) TIP RETURN CIRCUIT OPEN OR HIGH RESISTANCE 
    Fig 5: Checking TIP Signal Circuit
    GC0103567Courtesy of CHRYSLER LLC
    CAUTION: When checking circuits at the Powertrain Control Module (PCM), be careful not to damage or distort the connector terminals. Improper measurement technique could result in poor pin to terminal contact.
    1. Measure the resistance of the (K152) TIP Return circuit between the Throttle Inlet Pressure Sensor harness connector and the Powertrain Control Module (PCM) harness connector.

      Is the resistance below 5.0 ohms?

      Yes 

      • Go to step  7

      No 

  7. THROTTLE INLET PRESSURE SENSOR VOLTAGE 
    Fig 6: Checking TIP Return Circuit
    GC0103568Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Connect the Powertrain Control Module (PCM) connector.
    3. Connect a jumper wire between the (K152) TIP Return circuit and the (K153) TIP Signal circuit in the Throttle Inlet Pressure Sensor harness connector.
    4. Turn the ignition on.
    5. With the scan tool, read the Throttle Inlet Pressure Sensor signal voltage.
      NOTE: The voltage should be approximately 0.0 volts (plus or minus.1 volt) with the jumper wire in place.

      Does the scan tool display the voltage as described above?

      Yes 

      • Go to step  8

      No 

      • Go to step  9
  8. THROTTLE INLET PRESSURE SENSOR 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Throttle Inlet Pressure Sensor and the Powertrain Control Module (PCM).
    2. Look for any chafed, pierced, pinched, or partially broken wires.
    3. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the related connectors.
    4. Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.
    5. Look for the data to change or for the DTC to reset during the wiggle test.
    6. Refer to any Technical Service Bulletins that may apply.

      Were any problems found?

      Yes 

      No 

  9. POWERTRAIN CONTROL MODULE (PCM) 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Throttle Inlet Pressure Sensor and the Powertrain Control Module (PCM).
    2. Look for any chafed, pierced, pinched, or partially broken wires.
    3. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the related connectors.
    4. Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.
    5. Look for the data to change or for the DTC to reset during the wiggle test.
    6. Refer to any Technical Service Bulletins that may apply.

      Were any problems found?

      Yes 

      No 

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