Mazda 3 Workshop Manual page 393

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
Diagnostic procedure
STEP
VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
1
• Has FREEZE FRAME DATA been recorded?
VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Verify related service repair information
2
availability.
• Is any related repair information available?
INSPECT VARIABLE TUMBLE SOLENOID
VALVE CONNECTOR FOR POOR
CONNECTION
• Turn the ignition switch off.
3
• Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
• Is there malfunction?
INSPECT VARIABLE TUMBLE SOLENOID
VALVE
• Perform the variable tumble solenoid valve
inspection.
4
(See VARIABLE TUMBLE SOLENOID VALVE
INSPECTION [LF].)
• Is variable tumble solenoid valve normal?
INSPECT VARIABLE TUMBLE SOLENOID
VALVE POWER SUPPLY CIRCUIT FOR
OPEN CIRCUIT
• Disconnect the variable tumble solenoid valve
connector.
• Turn the ignition switch to the ON position
5
(Engine off).
• Measure the voltage between variable tumble
solenoid valve terminal A (wiring harness-side)
and body ground.
• Is the voltage B+?
INSPECT PCM CONNECTOR FOR POOR
CONNECTION
6
• Turn the ignition switch off.
• Disconnect the PCM connector.
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INSPECTION
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ACTION
Yes Go to the next step.
Record the FREEZE FRAME DATA on the
No
repair order, then go to the next step.
Perform repair or diagnosis according to
the available repair information.
Yes
• If the vehicle is not repaired, go to the
next step.
No Go to the next step.
Repair or replace the terminal, then go to
Yes
Step 9.
No Go to the next step.
Yes Go to the next step.
Replace the variable tumble solenoid
No
valve, then go to Step 9.
Yes Go to the next step.
Repair or replace the wiring harness for
No
open circuit, then go to Step 9.
Yes Repair the terminal, then go to Step 9.
No Go to the next step.
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