Primary Speed Sensor: Inspection

Remove the bulkhead harness connector from TCM. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION(TR690)>Transmission Control Module (TCM)> REMOVAL .
Set the ST between the TCM and bulkhead harness.
ST 18460AA040
Set the probe of oscilloscope to the check board connector.
Terminals:

No. 14 (+) - No. 42 (-)

Fig 1: Identifying Primary Speed Sensor Connector Terminals
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Start and warm up the engine.
Check the waveform of primary speed sensor with engine idling.
NOTE: The waveform cycle changes as the speed changes.

Fig 2: Primary Speed Sensor Signal Waveform

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