Engine - Intake-Air System (L3): Diagnosis Mazda 5 I рестайлинг

INTAKE MANIFOLD VACUUM INSPECTION [L3]

1. Verify that the intake air hoses are installed securely.
2. Warm up the engine.
3. Disconnect the vacuum hose connecting the intake manifold and the purge solenoid valve (purge solenoid valve side) and install the vacuum gauge. (See «PURGE SOLENOID VALVE REMOVAL/INSTALLATION [L3]»(ref-292900-S34316369262008080600000) .)
4. Measure the intake manifold vacuum while idling (no load) using the vacuum gauge. If not within the specification, perform the following inspections. Compression pressure (See «COMPRESSION INSPECTION [L3]»(ref-292896-S37393814112008080600000) .) Air suction (installation areas of throttle body, fuel injector, PCV valve, intake manifold) Standard ATX: -57.0 kPa {-428 mmHg, 16.9 inHg} or more MTX: -60.0 kPa {-450 mmHg, -17.8 inHg} or more

AIR CLEANER ELEMENT INSPECTION [L3]

1. Remove the air cleaner element. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3]»(ref-292889-S35789412952008080600000) .)
2. Inspect the following items: If there is any abnormality, clean or replace the air cleaner element. Has the replacement interval come? Is the air cleaner element soiled, damaged, or bent? Are the air cleaner case and the air cleaner element correctly sealed? Is the correct air cleaner element installed?

THROTTLE BODY INSPECTION [L3]

Note. Perform the following inspection only when directed.

Resistance Inspection

1. Disconnect the negative battery cable.
2. Disconnect the throttle body connector.
3. Measure the resistance between throttle actuator terminals E and F. If not as specified, replace the throttle body. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3]»(ref-292889-S35789412952008080600000) .) If as specified, carry out the "Circuit Open/Short Inspection".

Specification

AMBIENT TEMPERATURE AND RESISTANCE SPECIFICATION

Scheme 138

Scheme 139

1. Disconnect the PCM connector. (See «PCM REMOVAL/INSTALLATION [L3]»(ref-292895-S11081898982008080600000) .)
2. Inspect the following wiring harnesses for open or short (continuity check).

VARIABLE TUMBLE SOLENOID VALVE INSPECTION [L3]

1. Remove the variable tumble solenoid valve. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3]»(ref-292889-S35789412952008080600000) .)
2. Inspect airflow between the ports under the following conditions. If not as specified, replace the variable tumble solenoid valve. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3]»(ref-292889-S35789412952008080600000) .) If as specified, carry out the "Circuit Open/Short Inspection".

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See «PCM REMOVAL/INSTALLATION [L3]»(ref-292895-S11081898982008080600000) .)
2. Inspect the following wiring harness for open or short (continuity check).

VARIABLE INTAKE AIR SHUTTER VALVE ACTUATOR INSPECTION [L3]

1. Remove the air hose. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3]»(ref-292889-S35789412952008080600000) .)
2. Disconnect the vacuum hose from the variable intake air shutter valve actuator.
3. Connect a vacuum pump to the variable intake air shutter valve actuator.
4. Apply vacuum and verify that the rod moves. If the rod dose not move, replace the intake manifold.

VACUUM SPECIFICATION

Scheme 140

VARIABLE TUMBLE SHUTTER VALVE ACTUATOR INSPECTION [L3]

1. Remove the air hose. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3]»(ref-292889-S35789412952008080600000) .)
2. Disconnect the vacuum hose from the variable tumble shutter valve actuator.
3. Connect a vacuum pump to the variable tumble shutter valve actuator.
4. Apply vacuum and verify that the rod moves. If the rod dose not move, replace the intake manifold.

VACUUM SPECIFICATION

Scheme 141

Scheme 142

1. Remove in the order indicated in the table.
2. Install in the reverse order of removal.