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P0602-ECM INVALID CODE WORD For a complete wiring diagram Refer to Section 8W • When Monitored: • Set Condition: Possible Causes ENGINE CONTROL MODULE INTERMITTENT CONDITION Diagnostic Test 1. ENGINE CONTROL MODULE NOTE: If the ECM detects and stores a DTC, the ECM also stores the engine/vehicle operating conditions NOTE: Before erasing stored DTCs, record these conditions. Attempting to duplicate these conditions may NOTE: If there are other DTC’s set with this DTC repair other DTC’s before continuing with this diagnostic NOTE: This code can be caused by an intermittent problem in the wiring and connectors to the Engine With the scan tool, erase ECM DTCs. Perform several engine run cycles, turning the ignition off for at least 20 seconds between each engine run cycle. With the scan tool, read the ECM DTCs. Did this DTC set again? Yes >> Replace and program the Engine Control Module in accordance with the Service Information. Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING). No >> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) 9 - 1094 ENGINE DIESEL DIAG KJ |