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Home >> Jeep >> 2024 >> Grand Cherokee Summit >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Hybrid Control Processor Module (HCP) - Environmental Data Diagnosis And Verification Test) >> Standard Procedure >> Hybrid Control Processor (HCP) Verification Test >> Hybrid Control Module (HCP) Verification Test

Hybrid Control Module (HCP) Verification Test

WARNING: This page is about a different variant/trim than selected.
  1. SELECTING THE PROPER VERIFICATION TEST 
    WARNING:

    On vehicles equipped with the high voltage system, you must thoroughly read and follow all High Voltage Safety procedures. In addition, before performing any diagnostic or service procedure near a high voltage component, you must perform the High Voltage Power Down. Failure to follow these instructions may result in possible serious or fatal injury.

    1. Inspect the vehicle to make sure that all components are properly installed and connected.
    2. Remove all test equipment.
    3. Perform the High Voltage Power-Up procedure.
    4. Make sure all power systems are fully charged and operational.
    5. With the scan tool, erase DTCs.
    6. With the scan tool, read DTCs. If any DTCs are present, refer to the appropriate Diagnostic Procedure.
      NOTE:

      After replacing or flashing any high voltage module, the ignition must be turned to the off position for a minimum of 1 minute.

      Select the appropriate repair from the list below and follow the steps for that repair.

      Power Inverter Module (PIM) was replaced: 

      • Go To  2

      Internal Transmission Repairs were made: 

      • Go To  3

      Any other PHEV System related repairs were made: 

      • Go To  4
  2. PIM WAS REPLACED 
    1. With the scan tool, perform the Hybrid Control Processor (HCP) Replacement procedure.
    2. With the scan tool, perform the HCP VIN Programming procedure.
    3. With the scan tool, perform the Resolver Offset Relearn Trigger procedure.

      Did the procedure/s pass?

      Yes 

      • Go To  4
  3. INTERNAL TRANSMISSION REPAIR WAS MADE 
    1. Check the Transmission Fluid Level and correct if necessary.
    2. With the scan tool, perform the Resolver Offset Relearn Trigger procedure.

      Did the procedure/s pass?

      Yes 

      • Go To  4
  4. ANY OTHER PHEV SYSTEM RELATED REPAIRS WERE MADE 
    1. If an Electronic Control Module (ECU) was replaced, select the applicable module from the scan tool and select the miscellaneous functions. If the module has programmable features, program as necessary.
    2. Turn the ignition off, wait 30 seconds, and then turn the ignition on.
    3. Operate the vehicle in the conditions under which the DTC set or used the When Monitored and Set Conditions for the DTC that was set.
    4. With the scan tool, read DTCs.

      Are any DTCs set?

      Yes 

      • Repair the DTC that is set. Refer to the appropriate Diagnostic Information.

      No 

      • Test complete.