LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 352 (Gas - DTCS P0642 To P150D) >> P1128-Closed Loop Fueling Not Achieved - Bank 1 >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2010 Dodge Charger and 2010 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. DTC IS ACTIVE 
    1. Diagnose and repair any other active component or circuit DTCs before continuing with this procedure.
    2. Turn the ignition on.
    3. With the scan tool, select View DTCs. Copy DTC and Freeze Frame information.
    4. Start the engine and allow it to reach 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 can result in personal injury or death.
      NOTE: Attempt to operate the vehicle under conditions similar to which the DTC was set.
      NOTE: It may be necessary to test drive the vehicle within the DTC monitoring conditions in order for this DTC to set.
    5. With a scan tool, select View DTCs.

      Is the status Active for this DTC?

      Yes 

      • Go to step  2

      No 

  2. CHECKING THE FUEL DELIVERY SYSTEM 
    1. Perform the diagnostic procedures for FUEL PRESSURE LEAK DOWN and FUEL DELIVERY SYSTEM OUTPUT - FLOW TEST. Refer to Non-DTC Diagnostics/Driveability - Gas - Diagnosis and Testing .

      Were any problems found?

      Yes 

      No 

      • Go to step  3
  3. CHECKING THE ENGINE COOLANT TEMPERATURE SENSOR OPERATION 
    1. Perform the diagnostic procedure for CHECKING THE ENGINE COOLANT TEMPERATURE SENSOR OPERATION. Refer to Non-DTC Diagnostics/Driveability - Gas - Diagnosis and Testing .

      Were any problems found?

      Yes 

      No 

      • Go to step  4
  4. CHECKING THE MAP SENSOR OPERATION 
    1. Perform the diagnostic procedure for CHECKING THE MAP SENSOR OPERATION. Refer to Non-DTC Diagnostics/Driveability - Gas - Diagnosis and Testing .

      Were any problems found?

      Yes 

      No 

      • Go to step  5
  5. CHECKING THE OXYGEN SENSOR OPERATION 
    1. Perform the diagnostic procedure for CHECKING THE OXYGEN SENSOR OPERATION. Refer to Non-DTC Diagnostics/Driveability - Gas - Diagnosis and Testing .

      Were any problems found?

      Yes 

      No 

      • Go to step  6
  6. CHECKING THE ENGINE MECHANICAL SYSTEM 
    1. Perform the diagnostic procedure for CHECKING THE ENGINE MECHANICAL SYSTEM. Refer to Non-DTC Diagnostics/Driveability - Gas - Diagnosis and Testing .

      Were any problems found?

      Yes 

      No 

      • Go to step  7
  7. POWERTRAIN CONTROL MODULE (PCM) 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors relative to the components tested in this procedure.
    2. Look for any chafed, pierced, pinched, or partially broken wires.
    3. Look for broken, bent, pushed out or corroded terminals.
    4. Monitor the scan tool data relative to the components tested in this procedure and wiggle test the wiring and connectors.
    5. Look for the data to change or for a DTC to set during the wiggle test.
    6. Perform any Technical Service Bulletins that may apply.

      Were any problems found?

      Yes 

      No 

scientia non olet · About LEMON Manuals