Dtc P0193[L3 With Tc] - Mazda CX-7 2007 Workshop Manual

STEP
3 INSPECT FUEL PRESSURE SENSOR
CONNECTOR FOR POOR CONNECTION
• Turn the ignition switch off.
• Disconnect the fuel pressure sensor connector.
• Inspect for poor connection (such as damaged/
pulled-out pins, corrosion).
• Is there any malfunction?
4 INSPECT FUEL PRESSURE SENSOR SIGNAL
CIRCUIT FOR SHORT TO GROUND
• Turn the ignition switch off.
• Inspect for continuity between the fuel pressure
sensor terminal B (wiring harness-side) and
body ground.
• Is there continuity?
5 INSPECT FUEL PRESSURE SENSOR
• Inspect the fuel pressure sensor.
(See01-40-35 FUEL PRESSURE SENSOR
INSPECTION[L3 WITH TC].)
• Is there any malfunction?
6 INSPECT PCM CONNECTOR FOR POOR
CONNECTION
• Turn the ignition switch off.
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/
pulled-out pins, corrosion).
• Is there any malfunction?
7 VERIFY TROUBLESHOOTING OF DTC P0192
COMPLETED
• Make sure to reconnect all the disconnected
connectors.
• Clear the DTC from the PCM memory using
the M-MDS.
• Start the engine.
• Is the same DTC present?
8 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 P0193[L3 WITH TC]

DTC P0193 Fuel pressure sensor circuit high input
• If the input voltage from the fuel pressure sensor is more than 4.8 V for 1.3 s, the PCM determines that the
fuel pressure sensor circuit is high.
Diagnostic support note
DETECTION
• This is a continuous monitor (CCM).
CONDITION
• The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
• FREEZE FRAME DATA is available.
• DTCs are stored in the PCM memory.
• Fuel pressure sensor malfunction
• Open circuit in the wiring harness between fuel pressure sensor terminal A and PCM terminal 2P
POSSIBLE
• Short to power in the wiring harness between fuel pressure sensor terminal B and PCM terminal 2R
CAUSE
• Connector or terminal malfunction
• PCM malfunction
01-02–96
ON-BOARD DIAGNOSTIC [L3 WITH TC]
INSPECTION
Yes Repair or replace the terminal, then go to Step 7.
No Go to the next step.
Yes Repair or replace the wiring harness for a possible short to
ground, then go to Step 7.
No Go to the next step.
Yes Replace the fuel pressure sensor, then go to Step 7.
(See01-40-35 FUEL PRESSURE SENSOR REMOVAL/
INSTALLATION[L3 WITH TC].)
No Go to the next step.
Yes Repair or replace the terminal, then go to the next step.
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 DTC troubleshooting completed.
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