Mazda 6 Workshop Manual page 189

Diagnostic procedure
STEP
1 VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
• Has FREEZE FRAME DATA been recorded?
2 VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Verify related service repair information
availability.
• Is any related repair information available?
3 VERIFY CURRENT SIGNAL STATUS: IS
CONCERN INTERMITTENT OR CONSTANT?
• Connect the WDS or equivalent to the DLC-2.
• Clear the DTC from the PCM memory using
the WDS or equivalent.
• Start the engine.
• Is the PENDING CODE for this DTC present?
4 INSPECT POOR CONNECTION OF VSC
SOLENOID VALVE CONNECTOR
• Turn the engine switch off.
• Disconnect the VSC solenoid valve connector.
• Inspect for poor connection (such as damaged/
pulled-out terminals, corrosion).
• Is there any malfunction?
5 INSPECT VSC SOLENOID VALVE
• Inspect the VSC solenoid valve.
•
Is the VSC solenoid valve normal?
6 INSPECT VSC SOLENOID VALVE FOR SHORT
TO POWER
• Turn the engine switch to the ON position
(Engine off).
• Measure the voltage between VSC solenoid
valve terminal B (wiring harness-side) and
body ground.
• Is the voltage B+?
7 INSPECT POOR CONNECTION OF PCM
CONNECTOR
• Turn the engine switch off.
• Inspect for poor connection (such as damaged/
pulled-out terminals, corrosion).
• Is there any malfunction?
8 VERIFY TROUBLESHOOTING OF DTC P2009
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear the DTC from the PCM memory using
the WDS or equivalent.
• Start the engine.
• Is the PENDING CODE for this DTC present?
9 VERIFY AFTER REPAIR PROCEDURE
• Perform the Repair Verification Drive Mode.
(See F2–39 OBD DRIVE
• Are any DTCs present?
End Of Sie
ON-BOARD DIAGNOSTIC
INSPECTION
MODE.)
Yes Go to the next step.
No Record the FREEZE FRAME DATA on the repair order,
then go to the next step.
Yes Perform repair or diagnosis according to the available
repair information.
• If the vehicle is not repaired, go to the next step.
No Go to the next step.
Yes Go to the next step.
No Intermittent concern exists.
Perform the "INTERMITTENT CONCERNS
TROUBLESHOOTING".
Yes Repair or replace the suspected terminal, go to Step 8.
No Go to the next step.
Yes Go to the next step.
No Replace the VSC solenoid valve, go to Step 8.
Yes Repair or replace the wiring harness for a short to power
supply, go to Step 8.
No Go to the next step.
Yes Repair or replace the suspected terminal, go to the next
step.
No Go to the next step.
Yes Replace the PCM, go to the next step.
No Go to the next step.
Yes Go to the applicable DTC inspection.
(See F2–40 DTC TABLE)
No Troubleshooting completed.
ACTION
F2–177
F2