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Engine - Intake-Air System [Aj]: Diagnosis Mazda 6 GG

Mechanical 9 illustrations ~302 words

AIR CLEANER ELEMENT INSPECTION [AJ]

  1. Remove the air cleaner element. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [AJ]»(ref-196915-S12790852492005101000000) .)
  2. Verify that the air cleaner element surface is free of dirt. If there is dirt present, use an air gun or similar tool to clean the element. If the replacement time limit has passed, replace the element.

Scheme 420

Scheme 420: VARIABLE AIR DUCT (VAD) SHUTTER VALVE INSPECTION [AJ]
Scheme 420: VARIABLE AIR DUCT (VAD) SHUTTER VALVE INSPECTION [AJ]

Scheme 421

Scheme 421
Scheme 421

Scheme 422

Scheme 422
Scheme 422
  1. Remove the air cleaner case. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [AJ]»(ref-196915-S12790852492005101000000) .)
  2. Disconnect the vacuum hose from the VAD shutter valve actuator.
  3. Connect a vacuum pump to the VAD shutter valve actuator.
  4. Apply vacuum and verify that the rod moves. If the rod does not move, replace the air cleaner case.

Scheme 423

Scheme 423: VARIABLE AIR DUCT (VAD) CONTROL SOLENOID VALVE INSPECTION [AJ]
Scheme 423: VARIABLE AIR DUCT (VAD) CONTROL SOLENOID VALVE INSPECTION [AJ]

Scheme 424

Scheme 424
Scheme 424
  1. Remove the VAD control solenoid valve. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [AJ]»(ref-196915-S12790852492005101000000) .)
  2. Inspect airflow between the ports under the following conditions. If not as specified, replace the VAD control solenoid valve. If as specified, carry out the «CIRCUIT OPEN/SHORT INSPECTION»(ref-196915-S36298711482005101000000) .

Circuit Open/Short Inspection

  1. Disconnect the PCM connector. (See «REMOVAL & INSTALLATION (MAZDA6)»(ref-151901-S17148602072003111900000) .)
  2. Inspect the following wiring harness for open or short (continuity check).

Scheme 425

Scheme 425
Scheme 425

THROTTLE ACTUATOR INSPECTION [AJ]

Note. Perform the following inspection only when directed.

Scheme 426

Scheme 426: Resistance Inspection
Scheme 426: Resistance Inspection
  1. Disconnect the negative battery cable.
  2. Disconnect the throttle body connector.
  3. Measure the resistance between the throttle actuator terminals using an ohmmeter. If not as specified, replace the throttle body. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [AJ]»(ref-196915-S12790852492005101000000) .) If as specified, carry out the «CIRCUIT OPEN/SHORT INSPECTION»(ref-196915-S18200770142005101000000) .

Scheme 427

Scheme 427: Specification
Scheme 427: Specification
  1. Disconnect the PCM connector. (See «REMOVAL & INSTALLATION (MAZDA6)»(ref-151901-S17148602072003111900000) .)
  2. Inspect the following wiring harnesses for open or short (continuity check).

Scheme 428

Scheme 428: Open circuit
Scheme 428: Open circuit
  1. If there is no continuity, the circuit is open. Repair or replace the harness. Throttle actuator terminal B (harness-side) and PCM terminal 54 Throttle actuator terminal A (harness-side) and PCM terminal 80

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