VARIABLE TUMBLE SHUTTER VALVE SWITCH INSPECTION [ZY]

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Note

•  Before performing the following inspection, make sure to follow the procedure as indicated in the troubleshooting flowchart. (See HOW TO USE THIS MANUAL.)

Voltage Inspection

1.  Disconnect the negative battery cable.

2.  Remove the intake manifold. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [ZY].)

3.  Disconnect the variable tumble shutter valve actuator connector.

4.  Connect the negative battery cable.

5.  Turn the ignition switch to the ON position.

6.  Verify that the variable tumble shutter valve switch out put voltage (WDS PID: IMRC_POS) is within the specification when the variable tumble shutter valve is opened/closed by pushing with a finger. (See PCM INSPECTION [ZY].)

•  If not within the specification, replace the intake manifold. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [ZY].)

•  If the monitor item condition/specification (reference) is not within the specification, even though there is no malfunction, perform the “Circuit Open/Short Inspection”.

Circuit Open/Short Inspection

1.  Remove the PCM connector cover.

2.  Disconnect the PCM connector. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [ZY].)

3.  Inspect the following wiring harness for open or short circuit (Continuity inspection).

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Open circuit

•  If there is no continuity, there is an open circuit. Repair or replace the wiring harness.

―  Variable tumble shutter valve actuator terminal E and PCM terminal 2AO

―  Variable tumble shutter valve actuator terminal A and PCM terminal 2AL

―  Variable tumble shutter valve actuator terminal C and PCM terminal 2J

Short circuit

•  If there is continuity, there is a short circuit. Repair or replace the wiring harness.

―  Variable tumble shutter valve actuator terminal E and body GND

―  Variable tumble shutter valve actuator terminal C and power supply

―  Variable tumble shutter valve actuator terminal A and body GND

―  Variable tumble shutter valve actuator terminal A and power supply