Variable Tumble Shutter Valve Switch Inspection

VARIABLE TUMBLE SHUTTER VALVE SWITCH INSPECTION

NOTE: Perform the following inspection only when directed.

Voltage Inspection

1. Turn the ignition switch to ON position (Engine OFF).
2. Verify that the PCM terminal 91 *1, 1N *2 voltage is as shown in the table when the Variable tumble shutter valve actuator rod is depressed and released by hand.




California emission regulation applicable ATX Model




Except for California emission regulation applicable ATX Model








- If not as specified, perform the "Circuit Open/Short Inspection".
- If there is no open or short circuit, replace the intake manifold.

Circuit Open/Short inspection




1. Disconnect the PCM connector.
2. Inspect the following harnesses for open or short circuit. (Continuity check)

Open circuit
- If there is no continuity, there is an open circuit. Repair or replace the harness
- Variable tumble shutter valve switch terminal A and PCM terminal 33*1, 2K*2
- Variable tumble shutter valve switch terminal B and PCM terminal 20*1, 2H*2
- Variable tumble shutter valve switch terminal C and PCM terminal 91 *1, 1N*2

Short circuit
- If there is continuity, there is a short circuit. Repair or replace the harness.
- Variable tumble shutter valve switch terminal A and power supply
- Variable tumble shutter valve switch terminal A and body GND
- Variable tumble shutter valve switch terminal B and power supply
- Variable tumble shutter valve switch terminal C and power supply
- Variable tumble shutter valve switch terminal C and body GND

*1 : California emission regulation applicable ATX model
*2 : Except for California emission regulation applicable ATX model