Mazda 6 Quiz
Fuel and emission control systems

Intake air temperature (iat) sensor inspection

In this manual: Fuel and emission control systems
General information — 42Engine — 23Lubrication system — 10Cooling system — 9Fuel and emission control systems — 161Engine electrical system — 17Clutch — 21Manual transaxle — 10Automatic transaxle — 110Front and rear axles — 20Steering system — 15Braking system — 104Suspension — 34Body — 201Body electrical system — 287Heater and air conditioner systems — 89Technical data — 1Special tools — 1
~1min read
Resistance Inspection Note
  • Perform the following inspection only when directed.

1. Disconnect MAF/IAT sensor.

2. Measure the resistance between the MAF/IAT sensor terminals D and E using an ohmmeter.

  • If not as specified, replace the MAF/IAT sensor.
  • If the MAF/IAT sensor is okay, but the IAT PID are out of specification, perform the Circuit Open/Short Inspection.

Specification

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION.)


2. Inspect the following wiring harnesses for open or short. (Continuity check)

Open circuit
  • If there is no continuity, the circuit is open. Repair or replace the harness.

- MAF/IAT sensor terminal D (harness-side) and PCM terminal 2E (harness-side)

- MAF/IAT sensor terminal E (harness-side) and PCM terminal 2H (harness-side)

Short circuit
  • If there is continuity, the circuit is shorted. Repair or replace the harness.

- MAF/IAT sensor terminal E (harness-side) and power supply

- MAF/IAT sensor terminal D (harness-side) and power supply

- MAF/IAT sensor terminal D (harness-side) and body GND

Test yourself

A quick Mazda 6 quiz: every answer comes with an explanation and a link to the manual page.