Editing Forums/Z31P/z31-repairs-forums engine-mechanical/Need help with TPS harness

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|op_user=ralph50
|op_date=2015-10-09 11:23:25
|post_count=3
|archive_url=/Z31performance_archive/forum/z31-repairs-forums/engine-mechanical/25361-need-help-with-tps-harness.html
}}

'''ralph50:''' <small>(2015-10-09 11:23:25)</small>

My TPS checks out fine.

According to the FSM, the harness to the TPS should have continuity. '' It does not.''

I am wondering if continuity should be checked with the ignition switch open or closed?

With the ignition switch off I only get continuity at the TPS at idle.

With the ignition switch on I get continuity at the TPS all the time even at WOT.

The FSM mentions pins 18 and 25. Do these pins correlate the pins on the ECU?

Should I bypass the harness and run two wires from the ECU to the TPS or should I look for something else?

Taking life one sensor at a time.

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'''kaur:''' <small>(2015-10-09 12:23:48)</small>

In general, continuity should be checked when the wire is not carrying any power/signal so that it's at 0 V and has no current. So in this case ignition off. In order to check the harness, you should be checking continuity between a pin on the ECU harness connector and the corresponding pin on the TPS connector on the other end of the harness. If the resistance is small enough, you have a connection. 18 and 25 are the ECU pins the TPS is connected to.

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'''ralph50:''' <small>(2015-10-09 14:37:27)</small>

Thanks. That was my next step. After spending 3 hours on this yesterday I just needed to focus.