Diagnostic Aids

Ensure TP sensor adjustment is correct. See the ADJUSTMENTS article for TP sensor adjustment. An intermittent malfunction may be caused by a poor connection, rubbed-through wire insulation, or a wire broken inside insulation. Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, or poor terminal-to-wire connections before component replacement.

Before replacing TP sensor ensure resistance between TP sensor terminals No. 1 (Light Green/Black wire) and No. 3 (Green/White wire) is 100-20,000 ohms. If resistance is okay, ensure resistance between TP sensor terminals No. 1 (Light Green/Black wire) and No. 4 (Light Green wire) is 2870-5330 ohms.