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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 >> Loss Of Communication With Orc >> Possible Causes
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Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN OR SHORTED
IGNITION RUN/START CONTROL OUTPUT CIRCUIT OPEN OR SHORTED
GROUND CIRCUIT OPEN OR HIGH RESISTANCE
CAN C BUS CIRCUIT(S) OPEN OR HIGH RESISTANCE
OCCUPANT RESTRAINT CONTROLLER (ORC) MODULE

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  .