Dtc P2502 [Z6] - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
• Measure the voltage between BARO sensor
terminal B (wiring harness-side) and body
GND.
• Is the voltage B+?
INSPECT BARO SENSOR
• Inspect the BARO sensor.
5
(See BAROMETRIC PRESSURE (BARO)
SENSOR INSPECTION
• Is there any malfunction?
INSPECT PCM CONNECTOR FOR POOR
CONNECTION
• Turn the ignition switch off.
• Disconnect the PCM connector.
6
• Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
• Is there any malfunction?
INSPECT BARO SENSOR GND CIRCUIT
FOR OPEN CIRCUIT
• Turn the ignition switch off.
7
• Inspect for continuity between BARO sensor
terminal A (wiring harness-side) and PCM
terminal 2AX (wiring harness-side).
• Is there continuity?
VERIFY TROUBLESHOOTING OF DTC
P2229 COMPLETED
• Make sure to reconnect all disconnected
connectors.
8
• Clear the DTC from the PCM memory using
the WDS or equivalent.
• Start the engine.
• Is the same DTC present?
VERIFY AFTER REPAIR PROCEDURE
• Perform the "AFTER REPAIR PROCEDURE".
9
(See AFTER REPAIR PROCEDURE
• Are any DTCs present?
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[Z6].)
[Z6].)

DTC P2502 [Z6]

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Replace the BARO sensor, then go to Step
Yes
8.
No Go to the next step.
Repair or replace the terminal, then go to
Yes
Step 8.
No Go to the next step.
Yes Go to the next step.
Repair or replace the wiring harness for a
No possible open circuit, then go to the next
step.
Replace the PCM, then go to the next step.
Yes
(See PCM REMOVAL/INSTALLATION
[Z6].)
No Go to the next step.
Go to the applicable DTC inspection.
Yes
(See DTC TABLE [Z6].)
No DTC troubleshooting completed.
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B3E010202500W01