Mazda Mazda6 - Page 326

F2–174
TROUBLESHOOTING
NO.2 MIL ILLUMINATES
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Diagnostic procedure
End Of Sie
NO.3 WILL NOT CRANK
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Diagnostic procedure
2 MIL ILLUMINATES
DESCRIPTION • MIL illuminates incorrectly.
POSSIBLE
CAUSE
• PCM illuminates for emission-related concern (DTC is stored in PCM)
• Instrument cluster malfunction
Note
• If MIL blinks at steady rate, misfire condition could possibly exist.
STEP INSPECTION RESULTS ACTION
1 Connect WDS or equivalent to DLC-2.
Turn engine switch to ON.
Retrieve any DTC.
Is DTC displayed?
Yes DTC is displayed:
• Go to appropriate DTC test.
No No DTC is displayed:
• Inspect instrument cluster operation.
2 Verify test results.
• If okay, return to diagnostic index to service any additional symptoms.
• If malfunction remains, replace PCM. (See F2–64 PCM REMOVAL/INSTALLATION)
3 WILL NOT CRANK
DESCRIPTION • Starter does not work.
POSSIBLE
CAUSE
• Open starter circuit between engine switch and starter
• Starter malfunction
• Seized/hydrolocked engine, flywheel
• Immobilizer system (PATS) and/or circuit malfunction (if equipped)
• Low or dead battery
• Charging system malfunction
STEP INSPECTION RESULTS ACTION
1 Note
• The following test should be perform for
vehicles with immobilizer system. Go to
Step 10 for vehicles without immobilizer
system.
Connect WDS or equivalent to DLC-2.
Do following conditions appear?
• Engine is not completely started.
• DTC B1681 is displayed.
Yes Both conditions appear:
Go to Step 4.
No Either or other condition appears:
Go to next step.
2 Is coil connector securely connected to coil? Yes Go to next step.
No Connect coil connector securely.
Return to Step 1.
3 Does security light illuminate? Yes Go to next step.
No Inspect instrument cluster and wiring harness.
4 Connect WDS or equivalent to DLC-2 and
retrieve DTC.
DTC
B1213, B1342, B1600, B1601, B1602, B1681,
B2103, B2431
Yes Go to appropriate DTC test.
No Go to next step.