4-74 FI SYSTEM DIAGNOSIS Is the voltage OK? 1 • Pink wire open or shorted to ground ECM coupler (Harness side) • If wire and connection are OK, intermittent trou- (Black) (Gray) ble or faulty ECM. YES • Recheck each terminal and wire harness for open circuit and poor connection. • Replace the ECM with a known good one, and inspect it again. • Pink or B/W wire open, or Pink wire shorted to ground NO • Loose or poor contacts on the ECM coupler (terminal M or X) • If wire and connection are OK, replace the GP switch with a new one. 10)After repairing the trouble, clear the DTC using SDS tool. (4-27) E PL SAM