4-92 FI SYSTEM DIAGNOSIS Step 2 2 1)Turn the ignition switch ON. V 2)Measure the voltage between O/W wire and ground. PAIR valve voltage: Battery voltage (+ O/W – - Ground) 09900-25008: Multi-circuit tester set Tester knob indication: Voltage () Is the voltage OK? 2 • W/G wire open or shorted to ground, or poor t ECM coupler (Harness side) connection failure. (Black) (Gray) • If wire and connection are OK, intermittent trou- YES ble or faulty ECM. • Recheck each terminal and wire harness for open circuit and poor connection. • Replace the ECM with a known good one, and inspect it again. NO Open or short circuit in the O/W wire. E 3)After repairing the trouble, clear the DTC using SDS tool. L (4-27) P ACTIVE CONTROL INSPECTION 1)Set up the SDS tool. (Refer to the SDS operation manual for further details.) M 2)Turn the ignition switch ON. A 3)Click “PAIR Sol operating control” 1. S 4)Click each button 2. At this time, if an operation sound is heard from the PAIR control solenoid valve, the function is normal.