Mazda Mazda6 Workshop Manual Supplement page 309

STEP
2 INSPECT POOR CONNECTION OF VSC
SOLENOID VALVE CONNECTOR
• Turn engine switch to OFF.
• Inspect for poor connection (damaged, pulled-
out terminals, corrosion, etc.).
• Is there any malfunction?
3 INSPECT VSC SOLENOID VALVE CIRCUIT FOR
SHORT TO GND
• Turn engine switch to OFF.
• Inspect continuity between following
harnesses:
— VSC solenoid valve terminal A and PCM
control relay terminal C.
— VSC solenoid valve terminal B and PCM
terminal 101.
• Is there continuity?
4 INSPECT VSC SOLENOID VALVE
• Inspect VSC solenoid valve.
(See F2–42 VARIABLE SWIRL CONTROL
(VSC) SOLENOID VALVE
•
Is there any malfunction?
5 INSPECT POOR CONNECTION OF PCM
CONNECTOR
• Turn engine switch to OFF.
• Inspect for poor connection (damaged, pulled-
out terminals, corrosion, etc.).
• Is there any malfunction?
6 INSPECT VSC SOLENOID VALVE CIRCUIT FOR
OPEN
• Turn engine switch to OFF.
• Inspect continuity between following
harnesses:
— VSC solenoid valve terminal A and PCM
control relay terminal C.
— VSC solenoid valve terminal B and PCM
terminal 101.
• Is there continuity?
7 VERIFY TROUBLESHOOTING OF DTC P0661
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear DTC from PCM memory using WDS or
equivalent.
• Start engine.
• Is same DTC present?
8 VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
(See F2–86 AFTER REPAIR
• Is there any DTC present?
End Of Sie
ON-BOARD DIAGNOSTIC
INSPECTION
INSPECTION)
PROCEDURE)
Yes Repair or replace suspected terminal, go to Step 7.
No Go to next step.
Yes Repair or replace harness for short to GND, go to Step 7.
No Go to next step.
Yes Replace VSC solenoid valve, go to Step 7.
No Go to next step.
Yes Repair or replace suspected terminal, go to Step 7.
No Go to next step.
Yes Go to next step.
No Repair or replace harness for open, go to next step.
Yes Replace PCM, go to next step.
(See F2–64 PCM REMOVAL/INSTALLATION)
No Go to next step.
Yes Go to applicable DTC inspection.
(See F2–87 DTC TABLE)
No Troubleshooting completed.
ACTION
F2–157
F2