LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 601 (3.0L Diesel - DTCS P05EF-00 To P2002-00 - 1500) >> Diagnosis And Testing >> P1688-00-EGR Actuator Control Circuit High - Positive Side >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2014 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
  1. DTC IS ACTIVE 
    1. Ignition on, engine not running.
    2. With the scan tool, erase DTCs in the PCM.
    3. Start the engine and test drive the vehicle until the engine reaches operating temperature.
    4. With the scan tool, select View DTCs.

      Is the status Active for this DTC?

      Yes 

      • Go To  2

      No 

      • Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT DTC .
  2. CHECK THE (K682) EGR CONTROL (+) CIRCUIT FOR A SHORT TO VOLTAGE 
    Fig 1: Checking EGR Control (+) Circuit For Short To Voltage
    GC0143625Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the EGR Valve harness connector.
    3. Measure the voltage on the (K682) EGR Control (+) circuit at the EGR Valve harness connector.

      Is the voltage above 12.0 Volts?

      Yes 

      • Repair the (K682) EGR Control (+) circuit for a short to voltage.
      • Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .

      No 

      • Go To  3
  3. CHECK THE EGR VALVE 
    1. Replace the EGR Valve in accordance with the service information.
    2. Turn the ignition on.
    3. With the scan tool, erase DTCs in the PCM.
    4. Start the engine and test drive the vehicle until the engine reaches operating temperature.
    5. With the scan tool, select View DTCs.

      Did the DTC return?

      Yes 

      • Go To  4

      No 

  4. POWERTRAIN CONTROL MODULE 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the EGR Valve 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.
    4. Perform any Technical Service Bulletins that may apply.

      Were any problems found?

      Yes 

      No 

      • Replace the Powertrain Control Module in accordance with the service information. Refer to REMOVAL .
      • Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
scientia non olet · About LEMON Manuals