Mazda 3 Workshop Manual page 191

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
• Inspect for poor connection (such as damaged,
pulled-out pins, and corrosion).
• Is there any malfunction?
INSPECT VARIABLE TUMBLE SHUTTER
VALVE ACTUATOR MALFUNCTION
• Perform the variable tumble shutter valve
actuator inspection.
4
(See VARIABLE TUMBLE SHUTTER VALVE
ACTUATOR INSPECTION
• Is the variable tumble shutter valve actuator
normal?
INSPECT PCM CONNECTOR FOR POOR
CONNECTION
• Turn the ignition switch off.
• Disconnect the PCM connector.
5
• Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
• Is there any malfunction?
INSPECT VARIABLE TUMBLE SHUTTER
VALVE ACTUATOR CONTROL CIRCUIT FOR
OPEN CIRCUIT
• Inspect for continuity between followings;
- Between variable tumble shutter valve
actuator terminal A (wiring harness-
6 side) and PCM terminal 2AJ (wiring
harness-side)
- Between variable tumble shutter valve
actuator terminal B (wiring harness-
side) and PCM terminal 2AF (wiring
harness-side)
• Is there continuity?
INSPECT VARIABLE TUMBLE SHUTTER
VALVE ACTUATOR CONTROL CIRCUIT FOR
SHORT TO GROUND
• Inspect for continuity between followings;
- Between variable tumble shutter valve
7 actuator terminal A (wiring harness-
side) and body ground
- Between variable tumble shutter valve
actuator terminal B (wiring harness-
side) and body ground
• Is there continuity?
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Yes Go to the next step.
Replace the variable tumble shutter valve
actuator, then go to Step 9.
No
(See VARIABLE TUMBLE SHUTTER
VALVE ACTUATOR
REMOVAL/INSTALLATION
Yes Repair terminal, then go to Step 9.
No Go to the next step.
Yes Go to the next step.
Repair or replace wiring harness for open
No
circuit, then go to Step 9.
Repair or replace for short to ground, then
Yes
go to Step 9.
No Go to the next step.
- automotive repair manuals website
[Z6].)