Which Wire?

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Oct 15, 2002 | 11:12 PM

jwar

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Driver

Joined: Jun 2002

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From: canada

Which Wire?

On a 92 Lexus SC400 which wire is the Engine Coolant Temp Sensor wire to the ECU? There are three plugs on my ECU, which wire on which plug?

Aug 21, 2006 | 10:52 AM

zegnaguy

Pole Position

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From: WA

Yes, I'd like to know the answer to this too!

Aug 27, 2006 | 11:20 AM

philauldridge

Driver

Joined: Jun 2001

Posts: 187

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From: Texas

I only have the SC300 manuals, but would guess it to be the same. In which case, you will be looking for the ORANGE 23-pin connector named IK1. The coolant wire is pin 9 which is one pin from the upper corner, adjacent to the outermost pin which should be purple/black. You can confirm the same color wire at the temperature sensor under the hood.