Puzzled on Tach Connection on 1UZ for Idle Check
Puzzled on Tach Connection on 1UZ for Idle Check
I have a old tach/dwell meter that has only 2 terminal clips, black (-) & red (+).
Lexus manual shows pic (attached) that has 3 wires to tach: 1 to battery +, 1 to battery -, and a 3rd wire to terminal IG (-) of diagnostic port.
Question is: can I use my old tach (with 2 wires) to measure idle speed or must I have a different type?
Lexus manual shows pic (attached) that has 3 wires to tach: 1 to battery +, 1 to battery -, and a 3rd wire to terminal IG (-) of diagnostic port.
Question is: can I use my old tach (with 2 wires) to measure idle speed or must I have a different type?
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Dave Zorychta
ES - 1st to 6th Gen (1990-2018)
4
Oct 5, 2001 04:34 AM
Dave Zorychta
Lexus Audio, Video, Security & Electronics
2
Oct 2, 2001 07:55 AM
