Engine General Information and Diagnosis: 1A-58
2 1) Turn the ignition switch OFF.
2) Disconnect the IAT sensor coupler.
3) Measure the IAT sensor resistance.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Resistance (Ω)
IAT sensor resistance
Approx. 2.56 kΩ at 20 °C (68 °F)
(Terminal – Terminal)
NOTE
IAT sensor resistance measurement method is
the same way as that of the ECT sensor. Refer to
“ECT Sensor Inspection in Section 1C (Page 1C-
4)”.
Is the resistance OK?
Replace the ECM with a
new one. Refer to “ECM
Removal and
Installation in Section
1C (Page 1C-1)”.
Replace the IAT sensor
with a new one. Refer to
“IAP Sensor Removal
and Installation in
Section 1C (Page 1C-
2)”.
Step Action Yes No
(A)
I944H1110044-02
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