INTAKE SHUTTER VALVE INSPECTION [MZR-CD (RF Turbo)]

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Resistance Inspection

1.  Disconnect the negative battery cable.

2.  Remove the engine cover.

3.  Disconnect the intake shutter valve connector.

4.  Measure the resistance between the intake shutter valve terminals A and B.

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•  If within the specification, perform the “Circuit Open/Short Inspection”.
•  If not within the specification, replace the intake shutter valve. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
Intake shutter valve actuator resistance
0.3—100 ohms


Circuit Open/Short Inspection

1.  Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)

2.  Inspect the following wiring harnesses for an open or short circuit (continuity check).

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Open circuit
•  If there is no continuity, the circuit is open. Repair or replace the wiring harness.
―  Intake shutter valve terminal A and PCM terminal 118
―  Intake shutter valve terminal B and PCM terminal 116
Short circuit
•  If there is continuity, the circuit is shorted. Repair or replace the wiring harness.
―  Intake shutter valve terminal A and power supply
―  Intake shutter valve terminal A and body ground
―  Intake shutter valve terminal B and power supply
―  Intake shutter valve terminal B and body ground