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Home >> Jeep >> 2023 >> Grand Cherokee Altitude, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 46 (2.0L - DTCS P052B To P0629) >> DTC Troubleshooting >> P061C Etc Level 2 Rpm Performance >> Diagnostic Test

Diagnostic Test

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  1. CHECK FOR AN ACTIVE DTC 
    NOTE:

    Diagnose any Camshaft Position and Crankshaft Position Sensor DTCs before continuing.

    NOTE:

    An intermittent loss of power to the PCM without performing an ETC Relearn procedure may cause this DTC to set.

    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.

    1. Turn the ignition on.
    2. With the scan tool, erase DTCs in the PCM.
    3. Start the engine and allow it to reach operating temperature.
    4. Operate the accelerator pedal by gradually tipping in and out of the throttle and performing various throttle maneuvers. Do not exceed 3500 RPM.
    5. With the scan tool, read DTCs.

      Is the DTC active or pending?

      Yes 

      • Go To  2

      No 

  2. CHECK FOR ANY SERVICE BULLETINS OR PCM SOFTWARE UPDATES THAT APPLY 
    1. Before proceeding with this test procedure, perform any Service Bulletins that relate to this fault code.
    2. With the scan tool, read and record the PCM part number.
    3. Verify the Powertrain Control Module (PCM) is at the latest calibration (flash level). If not at the latest flash level, update the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to: PCM PROGRAMMING .
    4. Cycle the ignition off and back to on.
    5. With the scan tool, read DTCs.

      Did the DTC return?

      Yes 

      • Go To  3

      No 

  3. CHECK RELATED PCM AND COMPONENT CONNECTIONS 
    1. Complete any Service Bulletins that apply.
    2. Disconnect all PCM harness connectors.
    3. Disconnect all related in-line harness connections (if equipped).
    4. Disconnect the related component harness connectors.
    5. 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.
      • Check for spread terminals and verify proper terminal tension.

      Repair any conditions that are found.

    6. Reconnect all PCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    7. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    8. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
    9. With the scan tool, erase DTCs.
    10. Test drive or operate the vehicle in accordance with the when monitored and set conditions.
    11. With the scan tool, read DTCs.

      Did the DTC return?

      Yes 

      No