P0628

SUCTION CONTROL VALVE (SCV)












1. CHECK THE RESISTANCE OF SCV.
1. Set the starter switch to "LOCK" position.
2. Disconnect the harness of the SCV of the supply pump.
3. Measure the resistance between the terminals of SCV connector (SCV side).

Standard: 1.6 - 2.6 ohms at 20 °C {68 °F}

4. Measure the resistance of insulation between terminals and SCV body.

Standard: more than 100 Mohms at 20 °C {68 °F}







2. CHECK THE CONTINUITY BETWEEN TERMINALS.
1. Set the starter switch to "LOCK" and connect the signal check harness.
2. Disconnect the signal check harness connector on the ECU side.







3. Measure the resistance between SCVH (E10, E11) terminal of ECU connector (vehicle harness side) and SCVH terminal of SCV connectors (vehicle harness side). In the same way, measure the resistance between SCVL (E8, E9) terminal of ECU connector and SCVL terminal of SCV connector.

Standard: Less than 1 ohm












3. CHECK THE VOLTAGE BETWEEN TERMINALS.
1. Connectors of signal check harness (ECU side).
2. Set the starter switch to "ON" (The engine is stopped).
3. Measure the voltage between PGD2 (E4) terminal and SCVL (E8, E9) terminals of ECU connectors (vehicle harness side)

Standard: Pulse wave-shape by 12 V - 0 V
(After measurement, turn the starter switch to "LOCK" position.)

NOTICE: Measure the voltage within 40 seconds after starter switch "ON".