Mazda 2002 6 - Page 276

F–146
ON-BOARD DIAGNOSTIC
End Of Sie
3 VERIFY RELATED PENDING OR STORED
DTCS
• Turn ignition key to OFF, then ON (Engine
OFF).
• Verify pending code or stored DTCs using
WDS or equivalent.
• Is other DTC present?
Yes Repair applicable DTCs.
(See F–67 DTC TABLE.)
No Go to next step.
4 INSPECT IAC VALVE MALFUNCTION
• Perform IAC valve inspection.
(See F–13 IDLE AIR CONTROL (IAC) VALVE
INSPECTION.)
• Is IAC valve okay?
Yes Go to next step.
No Replace IAC valve, then go to Step 11.
5 INSPECT A/C MAGNET CLUTCH OPERATION
• Turn blower motor switch off.
• Is magnet clutch still on?
Yes Refer to “A/C is always on or A/C compressor runs
continuously.” of ENGINE SYMPTOM
TROUBLESHOOTING, then go to Step 11.
(See F–181 ENGINE SYMPTOM TROUBLESHOOTING.)
No Go to next step.
6 INSPECT PURGE SOLENOID VALVE
MALFUNCTION
• Perform purge solenoid valve inspection.
(See F–39 PURGE SOLENOID VALVE
INSPECTION.)
• Is purge solenoid valve okay?
Yes Go to next step.
No Replace purge solenoid valve, then go to Step 11.
7 INSPECT AIR CLEANER ELEMENT
• Remove air cleaner element with engine
running.
• Is engine speed increased?
Yes Replace air cleaner element, then go to Step 11.
No Go to next step.
8 INSPECT THROTTLE BODY PASSAGE
• Is throttle body clogged?
Yes Clean or replace throttle body passage, then go to Step 11.
No Go to next step.
9 INSPECT ENGINE COMPRESSION
• Inspect engine compression.
(See B–9 COMPRESSION INSPECTION.)
• Is engine compression okay?
Yes Go to next step.
No Overhaul engine, then go to Step 11.
10 INSPECT GENERATOR
• Perform generator inspection.
(See G–7 GENERATOR INSPECTION.)
• Is generator okay?
Yes Go to next step.
No Repair or replace related part, then go to next step.
11 VERIFY TROUBLESHOOTING OF DTC P0506
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Start engine.
• Clear DTC from PCM memory using WDS or
equivalent.
• Depress brake pedal for 14 s or more.
• Is PENDING CODE the same as DTC
present?
Yes Replace PCM, then go to next step.
(See F–43 PCM REMOVAL/INSTALLATION.)
No Go to next step.
12 VERIFY AFTER REPAIR PROCEDURE
• Perform “After Repair Procedure”.
(See F–66 AFTER REPAIR PROCEDURE.)
• Is there any DTC present?
Yes Go to applicable DTC troubleshooting.
(See F–67 DTC TABLE.)
No Troubleshooting completed.
STEP INSPECTION ACTION