1. Remove the bulkhead harness connector from TCM. Transmission Control Module (TCM) > REMOVAL 2. Set the ST between the TCM and bulkhead harness.
3. Set the probe of oscilloscope to the check board connector. Terminals: No. 13 (+) — No. 26 (−)
4. Start and warm up the engine. 5. Check the waveform of secondary speed sensor with engine idling. NOTE: The waveform cycle changes as the speed changes.
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Removal
InstallationDtc b14b1 seat heater thermistor circuit open (driver)
DTC DETECTING CONDITION:Open circuit in seat heater thermistor.TROUBLE SYMPTOM:Seat heater LH does not function.WIRING DIAGRAM:NOTE:For the coupling connector, refer to “WIRING SYSTEM”.Seat Heater System Seat Heater System > WIRING DIAGRAMSTEPCHECKYESNO1.CHECK CONNECTOR.1) Check connect ...