Mazda 6 2002, Workshop Manual

Page: 296 / 1248

F–166
ON-BOARD DIAGNOSTIC
End Of Sie
DTC P2006
A6E397001083W03
Diagnostic procedure
7 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 P2006 Variable tumble control system (VTCS) shutter valve stuck closed
DETECTION
CONDITION
•
PCM monitors mass air amount. If actual air flow amount is below estimated air flow amount when the
following monitoring conditions are met. PCM determines that VTCS shutter valve has been stuck closed.
MONITORING CONDITIONS
— Engine coolant temperature is above 63
°
C {145
°
F} .
— Engine speed is below 3,750 rpm .
— Throttle valve opening angle is above threshold
*
.
*
: Maximum calculated load valve varies depending on engine speed.
Diagnostic support note
•
This is a continuous monitor (CCM).
•
MIL illuminates if PCM detects the above malfunction condition 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 PCM memory.
POSSIBLE
CAUSE
•
ECT sensor malfunction
•
TP sensor malfunction
•
CKP sensor malfunction
•
Variable tumble control solenoid valve malfunction
•
VTCS shutter valve malfunction (stuck closed)
•
VTCS shutter valve actuator malfunction (stuck closed).
•
Short to ground circuit between variable tumble control solenoid valve terminal B and PCM terminal 4T
•
PCM malfunction
STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
•
Has FREEZE FRAME DATA been recorded?
Yes Go to next step.
No Record FREEZE FRAME DATA on repair order, then go to
next step.
2 VERIFY RELATED SERVICE INFORMATION
AVAILABILITY
•
Check for related Service Information
availability.
•
Is any related Service Information available?
Yes Perform repair or diagnosis according to available Service
Information.
•
If vehicle is not repaired, go to next step.
No Go to next step.