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PO26 code


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I just got a PO26 today. On the drive home (heavy rain), the SES light came on. I checked codes and sure enough...

P026 = Shorted Throttle Signal Switch

What exactly is this and where is it located?



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The TPS can be checked with a volt meter, key on, ignition off. It is a powered circuit. Back probe into the wires. Manually move the throttle. it should read, in even graduation, next to zero volts, up to about 4.6 volts, and it should be in a consistent, incremental fashion. The TPS is basically a variable resistor, or rheostat.

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