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Home >> Dodge and Ram >> 2001 >> Durango 4.7 N, 4WD, Part Time >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Modules >> System Tests >> Communications >> Internal Checksum Failure
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Internal Checksum Failure

NOTE: After making any repairs, perform BODY VERIFICATION TEST  under VERIFICATION TESTS.

Connect scan tool to Data Link Connector (DLC), under lower left side of instrument panel. Turn ignition on. Using scan tool, erase Central Timer Module (CTM) DTCs. Cycle ignition off, then on. Using scan tool, read CTM DTCs. If Internal Checksum Failure DTC resets, replace CTM. CTM is located behind left side kick panel. See CENTRAL TIMER MODULE  under REMOVAL & INSTALLATION. If Internal Checksum Failure DTC does not reset, problem is intermittent. Visually inspect and wiggle test related wiring.

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