Dtc P0107 [Lf] - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
• Measure the voltage between MAF/IAT
sensor terminal C (wiring harness-side) and
body ground.
• Is the voltage 0 V?
INSPECT POOR CONNECTION OF PCM
CONNECTOR
• Turn the ignition switch off.
• Disconnect the PCM connector.
5
• Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
• Is there any malfunction?
INSPECT MAF SENSOR GROUND CIRCUIT
FOR OPEN CIRCUIT
• Inspect for continuity between MAF/IAT
6
sensor terminal B (wiring harness-side) and
body ground.
• Is there continuity?
VERIFY TROUBLESHOOTING OF DTC
P0103 COMPLETED
• Make sure to reconnect all disconnected
connectors.
7
• Clear the DTC from the memory using the
WDS or equivalent.
• Start the engine.
• Is the same DTC present?
VERIFY AFTER REPAIR PROCEDURE
• Perform the "After Repair Procedure".
8
(See AFTER REPAIR PROCEDURE
• Are any DTC present?
DTC P0107
DETECTION
CONDITION
Downloaded from
[LF].)

DTC P0107 [LF]

MAP sensor circuit low input
• The PCM monitors the input voltage from the MAP sensor when the intake
air temperature is above 10 °C {50 °F}. If the input voltage at PCM terminal
2AL is below 0.1V, the PCM determines that the MAP sensor circuit has a
malfunction.
Diagnostic support note
https://carmanualshub.com/
Yes Repair the terminal, then go to Step 7.
No Go to the next step.
Replace MAF/IAT sensor, then go to the
Yes
next step.
Repair or replace the wiring harness, then
No
go to the next step.
Replace the PCM, then go to the next step.
Yes
(See PCM REMOVAL/INSTALLATION
[LF].)
No Go to the next step.
Go to the applicable DTC troubleshooting.
Yes
(See DTC TABLE [LF].)
No Troubleshooting completed.
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B3E010201084W08