Mazda 3 Workshop Manual page 80

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
• Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
• Is there any malfunction?
INSPECT IAT SENSOR SIGNAL
CIRCUIT FOR SHORT TO POWER
SUPPLY
• Turn the ignition switch to the ON
position (Engine off).
4
• Measure the voltage between MAF/IAT
sensor terminal D (wiring harness-side)
and body GND.
• Is the voltage B+?
INSPECT IAT SENSOR
• Inspect the IAT sensor.
5
(See INTAKE AIR TEMPERATURE (IAT)
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 IAT SENSOR CIRCUIT FOR
OPEN CIRCUIT
• Turn the ignition switch off.
• Inspect for continuity between the
following terminals:
- MAF/IAT sensor terminal D
7
(wiring harness-side) and PCM
terminal 2AQ (wiring harness-side)
- MAF/IAT sensor terminal E
(wiring harness-side) and PCM
terminal 2AY (wiring harness-side)
• Is there continuity?
VERIFY TROUBLESHOOTING OF DTC
P0113 COMPLETED
8
• Make sure to reconnect all disconnected
connectors.
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Yes
No Go to the next step.
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No Go to the next step.
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No Go to the next step.
Yes Go to the next step.
No
Yes
No Go to the next step.
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Repair or replace the wiring harness for a
possible short to power supply, then go to Step
8.
Replace the MAF/IAT sensor, then go to Step 8.
(See MASS AIR FLOW (MAF)/INTAKE AIR
TEMPERATURE (IAT) SENSOR
REMOVAL/INSTALLATION
Repair or replace the terminal, then go to Step
8.
Repair or replace the wiring harness for a
possible open circuit, then go to the next step.
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION
- automotive repair manuals website
[Z6].)
[Z6].)