P0110 · blink 43 – Intake Air Temperature (Iat) Sensor Circuit Malfunction

System: Engine control (EFI)
Dashboard light: Check engine light (MIL)
Check-engine blink code: 43
Applies to: 1KR-FE: M300 (Sirion export = JDM Boon M300S/M301S(4WD? see gaps) & Passo KGC10/KGC15). JDM-spec ECU not separately documented | K3-VE: M301 (Sirion 1.3 = JDM Boon M310S? / Passo QNC10)
Description: Intake Air Temperature (Iat) Sensor Circuit Malfunction
Detection / symptoms: Detection: 1.When the signals from the manifold absolute pressure/intake air temperature integral type sensor (Intake air temperature sensor section) are not outputted continuously after starting over a certain length of time:
Possible causes: Trouble area: 1.Open wire or short circuit in the Manifold absolute pressure, intake air temperature integral type sen- sor (Intake air temperature sensor section) circuit 2.Manifold absolute pressure, intake air temperature integral type sensor (Intake air temperature sensor section) 3.EFI ECU
What to check: Checking points: 1.Are the signals from the intake manifold pressure/intake air temperature integral type sensor (Intake air temperature sensor section) inputted to the EFI ECU? 2.Is the harness between the manifold absolute pressure/intake air temperature integral type sensor (Manifold absolute pressure sensor sect; Unit check B8-219: THA-E2PM -30C 28.6k / -20C 16.2k / 20C 2.45k / 80C 0.322k / 120C 0.117k ohm
Confidence: high (factory manual, export spec)

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