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Home >> Jeep >> 2024 >> Grand Cherokee Summit >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 51 (Hybrid Control Processor Module (HCP) - DTCS P2613-00 To P2E75-00) >> DTC Troubleshooting >> P26FD-00-A/C Compressor Internal Control Module Performance >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

CHECK FOR AN ACTIVE DTC 

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.

Read the HIGH-VOLTAGE SAFETY PROCEDURES. Refer to  HIGH VOLTAGE SAFETY PROCEDURES  . 

When the HIGH-VOLTAGE POWER-DOWN PROCEDURE is necessary. Refer to  HIGH VOLTAGE POWER DOWN  . 

  1. With the scan tool, read Hybrid Control Processor (HCP) DTCs and record on the repair order.
  2. Record the Freeze Frame Data (If available), Event Data (If available), and Environmental Data.
  3. With the scan tool, erase DTCs.
  4. Using the recorded data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
  5. With the scan tool, read HCP DTCs.

    Did the DTC return?

    Yes 

    • With the scan tool, review the Environmental Data and Compressor Fault Status Values in the HCP. Using this value, perform the specific diagnostic test for the condition. Refer to ENVIRONMENTAL DATA DIAGNOSIS .
    • Perform the Hybrid Control Processor (HCP) VERIFICATION TEST. Refer to STANDARD PROCEDURE .

    No