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Home >> Saturn >> 2000 >> LW2 Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P1640: Output Driver Module 1 >> Diagnostic Aids
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Diagnostic Aids

WARNING: This page is about a different car, the 2000 Saturn LW1, 2000 Saturn LS1, and 2000 Saturn LS. However, it is still accessible from the selected car via links, so may be relevant.

Scan tool can be used to command each of the outputs on and off to help in finding an intermittent condition.

An intermittent condition may be caused by poor connection, rubbed-through insulation, or a broken wire inside insulation. Check PCM harness connectors for backed-out terminals, improper mating, broken locks, improperly formed or damaged terminals, or poor terminal-to-wire connections before component replacement.