#
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.

  • 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).

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