Dtc P2188[L3 With Tc] - Mazda CX-7 2007 Workshop Manual

2007 mazda cx-7
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STEP
20
VERIFY TROUBLESHOOTING OF DTC P2187
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear the DTC from the PCM memory using
the M-MDS.
• Perform the PCM Adaptive Memory Produce
Drive Mode.
(See01-02-10 OBD-II DRIVE MODE[L3 WITH
TC].)
• Is the PENDING CODE for this DTC present?
21
VERIFY AFTER REPAIR PROCEDURE
• Perform the "AFTER REPAIR PROCEDURE".
(See01-14-4 AFTER REPAIR
PROCEDURE[L3 WITH TC].)
• Are any DTCs present?
End Of Sie

DTC P2188[L3 WITH TC]

DTC P2188
Fuel system too rich at idle
• PCM monitors the short term fuel trim (SHRTFT) and long term fuel trim (LONGFT) during closed loop fuel
control at idle. If the LONGFT and the sum total of these fuel trims exceed the preprogrammed criteria, the
PCM determines that fuel system is too rich at idle.
Diagnostic support note
• This is a continuous monitor. (Fuel system)
DETECTION
• MIL illuminates if the PCM detects the above malfunctioning condition in two consecutive drive cycles or in
CONDITION
one drive cycle while the DTC for the same malfunction has been stored in the PCM.
• PENDING CODE is available if the PCM detects the above malfunction conditions during the first drive
cycle.
• FREEZE FRAME DATA is available.
• DTCs are stored in the PCM memory.
• Misfire
• Front HO2S deterioration
• Front HO2S heater malfunction
• MAF sensor malfunction
• Pressure regulator malfunction
• Fuel pressure sensor malfunction
• Relief valve (built-in fuel delivery pipe) malfunction
• Spill valve control solenoid valve (built-in high pressure fuel pump) malfunction
• High pressure fuel pump malfunction
POSSIBLE
• Fuel pump malfunction
CAUSE
• EGR valve stuck open
• Variable swirl control improper operation
• Purge solenoid valve improper operation
• Purge solenoid valve malfunction (stuck open)
• Purge solenoid hoses improper connection
• PCV valve malfunction
• Variable valve timing control system improper operation
• PCM malfunction
Diagnostic procedure
STEP
1
VERIFY FREEZE FRAME DATA AND
DIAGNOSTIC MONITORING TEST RESULTS
HAVE BEEN RECORDED
• Have the FREEZE FRAME DATA and
DIAGNOSTIC MONITORING TEST RESULTS
(Fuel system related) been recorded?
2
VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Verify related Service Bulletins and/or on-line
repair information availability.
• Is any related repair information available?
01-02–226
ON-BOARD DIAGNOSTIC [L3 WITH TC]
INSPECTION
INSPECTION
Yes Replace the PCM, then go to the next step.
(See01-40-6 PCM REMOVAL/INSTALLATION[L3 WITH
TC].)
No
Go to the next step.
Yes Go to the applicable DTC inspection.
(See01-02-13 DTC TABLE[L3 WITH TC].)
No
Troubleshooting completed.
Yes Go to the next step.
No
Record the FREEZE FRAME DATA and DIAGNOSTIC
MONITORING TEST RESULTS 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.
ACTION
id010239812600
ACTION

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