Mazda CX-7 2007 Workshop Manual page 221

Diagnostic procedure
STEP
1 VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
• Has the FREEZE FRAME DATA been
recorded?
2 VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Check for related Service Bulletins and/or on-
line repair information availability.
• Is any related repair information available?
3 CLASSIFY INTERMITTENT CONCERN OR
CONTINUOUS CONCERN
• Clear the DTC from the PCM memory using
the M-MDS.
• Drive the vehicle under the following
conditions:
— Engine coolant temperature is above 63 °C
{145 °F}.
— Engine speed: below 3,750 rpm
— Throttle opening angle is as follows:
• Engine speed below 1,500 rpm: above
35%
• Engine speed between 1,500— 2,500
rpm: between 25— 35%
• Engine speed above 2,500: below 25%
• Is the PENDING CODE for this DTC present?
4 VERIFY IF STORED OTHER DTCs STORED
• Verify stored DTCs using the M-MDS.
• Is DTC P2088 or P2089 present?
5 INSPECT VARIABLE SWIRL SOLENOID VALVE
• Perform "VARIABLE SWIRL SOLENOID
VALVE INSPECTION".
(See01-13-13 VARIABLE SWIRL SOLENOID
VALVE INSPECTION[L3 WITH TC].)
• Is the variable swirl solenoid valve normal?
6 INSPECT VARIABLE SWIRL SHUTTER VALVE
ACTUATOR
• Perform "VARIABLE SWIRL SHUTTER VALVE
ACTUATOR INSPECTION".
(See01-13-13 VARIABLE SWIRL SHUTTER
VALVE ACTUATOR INSPECTION[L3 WITH
TC].)
• Is the variable swirl shutter valve actuator
normal?
7 INSPECT VARIABLE SWIRL SHUTTER VALVE
SWITCH
• Perform the "VARIABLE SWIRL SHUTTER
VALVE SWITCH INSPECTION".
(See01-13-13 VARIABLE SWIRL SHUTTER
VALVE ACTUATOR INSPECTION[L3 WITH
TC].)
• Is the variable swirl shutter valve switch
normal?
8 VERIFY CONNECTION OF VACUUM HOSE
ROUTING
• Verify that the vacuum hoses are connected
properly.
• Are the vacuum hoses connected properly?
ON-BOARD DIAGNOSTIC [L3 WITH TC]
INSPECTION
Yes Go to the next step.
No Record FREEZE FRAME DATA on the repair order, then go
to the next step.
Yes Perform the 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. Go to INTERMITTENT
CONCERN TROUBLESHOOTING procedure.
(See01-03-76 INTERMITTENT CONCERN
TROUBLESHOOTING[L3 WITH TC].)
Yes Go to the appropriate DTC troubleshooting procedures.
No Go to the next step.
Yes Go to the next step.
No Replace variable swirl solenoid valve, then go to Step 13.
Yes Go to the next step.
No Replace the intake manifold, then go to Step 13.
Yes Go to the next step.
No Replace the intake manifold, then go to Step 13.
Yes Go to the next step.
No Connect the vacuum hoses properly, then go to the next
step.
ACTION
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