INTAKE THROTTLE VALVE INSPECTION[MZ-CD 1.6 (Y6)]

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Resistance Inspection

1.  Remove the battery cover. (See BATTERY REMOVAL/INSTALLATION[MZ-CD 1.6 (Y6)].)

2.  Disconnect the negative battery cable.

3.  Disconnect the intake throttle valve connector.

4.  Measure the resistance between the intake throttle valve terminals C and D.

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•  If within the specification, perform the “Circuit Open/Short Inspection”.
•  If not within the specification, replace the air pipe (air bypass valve and (High power-Euro 4) Intake throttle valve component).
Intake throttle valve actuator resistance (Reference)
Approx. 3 ohms


Circuit Open/Short Inspection

1.  Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION[MZ-CD 1.6 (Y6)].)

2.  Disconnect the PCM control relay.

3.  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 throttle valve terminal C and PCM terminal 247
―  Intake throttle valve terminal D and PCM control relay terminal E
Short circuit
•  If there is continuity, the circuit is shorted. Repair or replace the wiring harness.
―  Intake throttle valve terminal C and body ground
―  Intake throttle valve terminal C and power supply
―  Intake throttle valve terminal D and body ground
―  Intake throttle valve terminal D and power supply