Diagnostic Aids
WARNING: This page is about a different variant/trim than selected.
Check for faulty connections or damaged harness. Connect a DVOM between BC solenoid driver circuit at PCM harness connector and engine ground. With ignition on, observe DVOM while moving all related harness and connectors. A change in voltage display indicates fault location.
Check BC solenoid driver circuit for short to ground. Check for binding by-pass valve. Check for sticking or misadjusted by-pass valve actuator.