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Diagnostic Procedures

Check CKP sensor for proper operation. See SYSTEM/COMPONENT TESTS article. Reprogram PCM and verify if fault or DTC resets. If DTC P1601 resets, replace PCM. Program replacement PCM using required equipment.

Check CKP sensor for proper operation. See SYSTEM/COMPONENT TESTS article. Reprogram PCM and verify if fault or DTC resets. If DTC P1601 resets, replace PCM. Program replacement PCM using required equipment.