LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1571 (6.7L Diesel - DTCS P0008 To P0401 - 2500 Hd) >> DTC Troubleshooting >> P0107-Manifold Absolute Pressure Sensor Circuit Low >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. ACTIVE DTC 
    NOTE:

    If there are any 5-Volt supply DTCs present, repair those DTCs before proceeding.

    1. Turn the ignition on.
    2. With the scan tool, record all Freeze frame data.
    3. With the scan tool, erase DTCs.
    4. Turn the ignition off for 75 seconds.
    5. Turn the ignition on.
    6. With the scan tool, read DTCs.

      Did the DTC reset?

      Yes 

      • Go To  2

      No 

  2. CHECK THE (F857) 5-VOLT SUPPLY CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    GC0110833Courtesy of CHRYSLER GROUP, LLC
    1. Ignition on.
    2. Disconnect the Temperature/Pressure MAP (T/P MAP) Sensor harness connector.
    3. With a voltmeter, measure the voltage of the (F857) 5-Volt Supply circuit at the T/P MAP Sensor harness connector.

      Is the voltage reading between 4.9 and 5.1 volts?

      Yes 

      • Go To  3

      No 

      • Repair the (F857) 5-Volt Supply circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  3. CHECK THE BOOST PRESSURE SENSOR 
    GC0110834Courtesy of CHRYSLER GROUP, LLC
    1. While monitoring the scan tool, connect a jumper between the (F857) 5-Volt Supply circuit and the (K37) Boost Pressure Sensor Signal circuit at the T/P MAP Sensor harness connector.

      Did the P0108 DTC set?

      Yes 

      No 

      • Go To  4
  4. CHECK FOR THE (K37) BOOST PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO THE (K916) BOOST PRESSURE SENSOR RETURN CIRCUIT 
    GC0137297Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the PCM C1 harness connector.
    3. Measure the resistance between the (K37) Boost Pressure Sensor Signal circuit and (K916) Sensor Ground circuit at the T/P MAP Sensor harness connector.

      Is the resistance below 10k Ohms?

      Yes 

      • Repair the short between the (K37) Boost Pressure Sensor Signal circuit and (K916) Sensor Ground circuit.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  5
  5. CHECK THE (K37) BOOST PRESSURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    GC0110836Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between ground and the (K37) Boost Pressure Sensor Signal circuit.

      Is the resistance below 10k Ohms?

      Yes 

      • Repair the (K37) Boost Pressure Sensor Signal circuit for a short to ground.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  6
  6. CHECK THE (K37) BOOST PRESSURE SENSOR SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Measure the resistance of the (K37) Boost Pressure Sensor Signal circuit between the T/P MAP Sensor and the PCM C1 harness connectors.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  7.

      No 

      • Repair the (K37) Boost Pressure Sensor Signal circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  7. POWERTRAIN CONTROL MODULE 
    1. Disconnect all PCM harness connectors.
    2. Disconnect all related in-line harness connections (if equipped).
    3. Disconnect the related component harness connectors.
    4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
      • Proper connector installation.
      • Damaged connector locks.
      • Corrosion.
      • Other signs of water intrusion.
      • Weather seal damage (if equipped).
      • Bent terminals.
      • Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
      • Terminals that have been pushed back into the connector cavity.
      • Perform a terminal drag test on each connector terminal to verify proper terminal tension.

      Repair any conditions that are found.

    5. Reconnect all PCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    7. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
    8. With the scan tool, erase DTCs.
    9. Using the recorded Freeze Frame and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
    10. With the scan tool, read PCM DTCs.

      Did the DTC return?

      Yes 

      No 

scientia non olet · About LEMON Manuals