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TPS sensor test 700

posted by  Dave Stevens on  Wed Jun 2 11:45 CST 2021
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last visit: Sun Jan 1 02:36 CST 2012
[RELATED]

If Haynes says pin 1 to 3 then it’s wrong. You check TPS operation looking for continuity between the centre pin 2 (may be labelled 18 on some switches) and pin 1 at idle stop, pin 3 for WOT. The better way to test TPS functionality is at the OBD connector using DTM 2 (diagnostic test mode, see the FAQ). That way you’re checking both the switch and all the wiring connections to make sure the ECU can see it.

In any case, if it’s exactly as you say then it’s more than likely the O2 sensor if it’s idling fine after a cold start for a couple of minutes. The OBD trouble code confirms that. The ECU doesn’t use the O2 sensor until the ECT says the engine is close to reaching normal operating temperature.
--
Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now






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