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Home >> Jeep >> 2023 >> Grand Cherokee Altitude, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 36 (Hybrid Control Processor Module (HCP) - Environmental Data Diagnosis And Verification Test) >> Environmental Data Diagnosis >> Over Temperature >> Possible Causes
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Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
A/C HIGH PRESSURE SIDE HIGH
LOW RADIATOR AIR FLOW/HIGH UNDERHOOD AMBIENT TEMP
CONTINUOUS LOW COMPRESSOR OPERATING SPEED
LOW A/C CHARGE
BLOCKED REFRIGERANT FLOW (EVAPORATOR ICING OR EVAPORATOR DEBRIS)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to:  2.0L - PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  or  3.6L - PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  or  5.7L - PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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  .