Dtc P0202 - Mazda 6 Workshop Manual

STEP
12 INSPECT PCM CONNECTOR FOR POOR
CONNECTION
• Turn the engine switch off.
• Inspect for poor connection (such as damaged/
pulled-out terminals, corrosion).
• Is there any malfunction?
13 INSPECT FOR OPEN CIRCUIT BETWEEN IDM
AND PCM
• Turn the engine switch off.
• Inspect for continuity between IDM terminal 2C
(wiring harness-side) and PCM terminal 42
(wiring harness-side).
• Is there continuity?
14 VERIFY TROUBLESHOOTING OF DTC P0201
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear the DTC using the WDS or equivalent.
• Start the engine.
• Is the same DTC present?
15 VERIFY AFTER REPAIR PROCEDURE
• Perform the Repair Verification Drive Mode.
(See F2–39 OBD DRIVE
• Are any DTCs present?
End Of Sie

DTC P0202

DTC P0202 Fuel injector No.2 operation identified
• The PCM monitors each cylinder injection confirmation signal from the IDM while the engine is running. If
the PCM does not receive the injection confirmation signal for No.2 cylinder normally, the PCM determines
that the fuel injector No.2 operation is not verified.
DETECTION
Diagnostic support note
CONDITION
• The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle.
• FREEZE FRAME DATA is available.
• The DTC is stored in the PCM memory.
• IDM malfunction
• Connector or terminal malfunction
• Short to GND in wiring harness between IDM terminal 2F and PCM terminal 43
• Short to power supply in wiring harness between IDM terminal 2F and PCM terminal 43
• Open circuit in wiring harness between IDM terminal 2F and PCM terminal 43
POSSIBLE
• Fuel injector No.2 malfunction
CAUSE
• Short to GND in wiring harness between fuel injector No.2 terminal B and IDM terminal 1G
• Short to power supply in wiring harness between fuel injector No.2 terminal B and IDM terminal 1G
• Open circuit in wiring harness between fuel injector No.2 terminal B and IDM terminal 1G
• PCM malfunction
F2–98
ON-BOARD DIAGNOSTIC
INSPECTION
MODE.)
Yes Repair or replace the suspected terminal, then go to Step
14.
No Go to the next step.
Yes Go to the next step.
No Repair or replace the wiring harness for an open circuit,
then go to the next step.
Yes Replace the PCM, then go to the next step.
No Go to the next step.
Yes Go to the applicable DTC troubleshooting.
(See F2–40 DTC TABLE.)
No Troubleshooting completed.
ACTION
B6E407000200103