Question about 1994 Toyota 4Runner
If i am not mistaken then these wires can be connected either way around as its only a temperature sensor in the air flow
Posted on Jul 07, 2010
The IAT is inside the Air Flow Meter in the air
intake and is not serviced seperatly.
Using an ohmmeter measure between terminals THA and E2. Resistance should read:
at -20°C (-4°F): 10 - 20 k ohms
at 0°C (32°F): 4 - 7 k ohms
at 20°C (68°F): 2 - 3 k ohms
at 40°C (104°F): 0.9 - 1.3 k ohms
at 60°C (104°F): 0.4 - 0.7 k ohms
If reading is out of specification. it will be necessary to replace the Volume Air Flow Meter assembly. Also, I suggest check this wiring diagrams...
Fig. 28: Engine wiring-Pick-Up 1991-95 6-cylinder
Fig. 31: Chassis wiring-Pick-Up 1990-95
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Fig. 32: Chassis wiring-Pick-Up 1990-95 continued
Posted on Jul 06, 2010
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Posted on Jan 02, 2017
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