Diagnostic Aids

If DTC P0510 is set, go to appropriate DTC test and diagnose this code first. A short to ground in CTP switch circuit may cause DTC to set. Check throttle cable adjustment. Ensure correct PCV valve is installed and no vacuum leaks are present.

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.