Mazda 6 2002, Workshop Manual

Page: 264 / 1248

CONTROL SYSTEM
F–134
End Of Sie
DTC P0403
A6E397001086W01
15 VERIFY TROUBLESHOOTING OF DTC P0340
COMPLETED
•
Make sure to reconnect all disconnected
connectors.
•
Turn ignition key to ON (Engine OFF).
•
Clear DTC from PCM memory using WDS or
equivalent.
•
Start engine.
•
Access MAF PID using WDS or equivalent.
Note
•
MAF PID should indicate 1.95 g/s {0.25
lb/min.} or above during this test
•
Is same DTC present?
Yes Replace PCM, then go to next step.
(See
F–43 PCM REMOVAL/INSTALLATION .)
No Go to next step.
16 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
DTC P0403 EGR valve (stepper motor) circuit malfunction
DETECTION
CONDITION
•
PCM monitors input voltage from EGR valve. If voltage at PCM terminals 4E, 4H, 4K and/or 4N remain low
or high, PCM determines that EGR valve circuit has malfunction.
Diagnostic support note
•
This is a continuous monitor (CCM).
•
MIL illuminates if PCM detects the above malfunction conditions in two consecutive drive cycles or in one
drive cycle while the DTC for the same malfunction has been stored in the PCM.
•
PENDING CODE is available if PCM detects the above malfunction condition during first drive cycle.
•
FREEZE FRAME DATA is available.
•
DTC is stored in the PCM memory.