INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION [ZJ, Z6]

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INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION [ZJ, Z6]

B3E014018840W06

  Note

  • Before performing the following inspection, make sure to follow the procedure as indicated in the troubleshooting flowchart. (See Troubleshooting Procedure.)

## Resistance Inspection

1. Disconnect the MAF/IAT sensor connector.

2. Verify that the resistance between terminals D and E is within the specification.

  • If not within the specification, replace the MAF/IAT sensor. (See MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR REMOVAL/INSTALLATION [ZJ, Z6].)
  • If the monitor item condition/specification (reference) is not within the specification, even though there is no malfunction, perform the "Circuit Open/Short Inspection".

  IAT sensor resistance

  Ambient temperature (°C {°F}) | Resistance (kilohm)
  --- | ---
  -20 {-4} | 13.618.4
  20 {68} | 2.212.69
  60 {140} | 0.4930.667

IAT sensor characteristics graph (reference)

## Circuit Open/Short Inspection

1. Remove the PCM connector cover.

2. Disconnect the PCM connector. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [ZJ, Z6].)

3. Inspect the following wiring harness for open or short circuit (continuity check).

### Open circuit

  • If there is no continuity, there is an open circuit. Repair or replace the wiring harness.
  - MAF/IAT sensor terminal D and PCM terminal 2AQ
  - MAF/IAT sensor terminal E and PCM terminal 2AY

### Short circuit

  • If there is continuity, there is a short circuit. Repair or replace the wiring harness.
  - MAF/IAT sensor terminal D and power supply
  - MAF/IAT sensor terminal D and body GND
  - MAF/IAT sensor terminal E and power supply