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Home >> Mercury >> 1992 >> Topaz L4-140 2.3L HSC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Pinpoint Tests >> TF - Transmission Speed Sensor >> TF - Testing Notes
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TF - Testing Notes

NOTE: You should enter this Pinpoint Test only when you have been directed here from Quick Test.



REMEMBER


This Pinpoint Test is intended to diagnose only the following:


- Processor assembly

- Harness circuits

- TSS or OSS


DESCRIPTION

The Transmission Turbine Speed (TSS) sensor and Transmission Output Shaft (OSS) sensor are magnetic pickups that send a signal to the processor assembly. This signal tells the processor assembly the transmission rpm. On AXOD-E applications the TSS is located in the "chain cover" halfshaft area which is on the right side of the transmission. On AOD-E applications the OSS is located on the rear of the transmission case, driver's side.
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