DTC 66: Air Injection Pump Relay
- If air injection pump is operating continuously, air injection pump relay output circuit (Green/Black wire) may be grounded. Check wiring harness for short circuit to ground. If necessary, repair wiring harness or replace faulty air injection pump relay.
- If air injection pump does not operate continuously, ensure air pump works for a short period after each hot start or works for several minutes following a cold start. Check air injection pump relay output circuit at pump relay. See the appropriate PIN VOLTAGE CHART
S article in this section. See below. If necessary, repair wiring harness or replace faulty air injection pump relay. Check for faulty ECM.