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Home >> Jeep >> 2023 >> Grand Cherokee Altitude, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 66 (5.7L - DTCS P058A To P0632) >> DTC Troubleshooting >> P0602 Control Module Programming Error/Not Programmed >> Theory Of Operation

Theory Of Operation

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Each Powertrain Control Module (PCM) has an internal identifier that is programmed in the memory by the manufacturer. The PCM internal identification is checked each time the ignition is turned on.

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