Dtc P2097[L3 With Tc] - Mazda CX-7 2007 Workshop Manual

STEP
18 INSPECT FUEL PRESSURE (LOW-SIDE)
• Connect the fuel pressure gauge between fuel
pump and high pressure fuel pump.
• Measure the low side fuel pressure.
(See01-14-5 FUEL LINE PRESSURE
INSPECTION[L3 WITH TC].)
• Is the low side fuel pressure within the
specified?
19 INSPECT FUEL INJECTOR
• Inspect the fuel injector.
(See01-14-27 FUEL INJECTOR
INSPECTION[L3 WITH TC].)
• Is there any malfunction?
20 VERIFY TROUBLESHOOTING OF DTC P2096
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".
(See01-02-10 AFTER REPAIR
PROCEDURE[L3 WITH TC].)
• Are any DTCs present?
End Of Sie

DTC P2097[L3 WITH TC]

DTC P2097 Target A/F feedback system too rich
• The PCM monitors the target A/F fuel trim while under target A/F feedback control. If the fuel trim is less
than specification, the PCM determines that the target A/F feedback system is too rich.
Diagnostic support note
• This is a continuous monitor. (Fuel system)
• MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in
DETECTION
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.
• Exhaust gas leakage
• Rear HO2S malfunction
• IAT sensor malfunction
• ECT sensor malfunction
• Front HO2S malfunction
• Excessive fuel line pressure
• Fuel pressure sensor malfunction
POSSIBLE
• Relief valve (built-in fuel delivery pipe) malfunction
CAUSE
• Spill valve control solenoid valve (built-in high pressure fuel pump) malfunction
• High pressure fuel pump malfunction
• Fuel pump malfunction
• Purge valve malfunction
• Insufficient engine compression
• PCM malfunction
01-02–194
ON-BOARD DIAGNOSTIC [L3 WITH TC]
INSPECTION
Yes Go to the next step.
No Inspect for following:
• Fuel line restriction
• Fuel filter clogging
If okay replace the fuel pump. Then go to Step 20.
Yes Replace the fuel injector, then go to the next step.
(See01-14-23 FUEL INJECTOR REMOVAL/
INSTALLATION[L3 WITH TC].)
No Go to the next step.
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.
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