Transmission Temperature Sensor/Switch: Testing and Inspection

MEASURE TCM SIGNAL VOLTAGE INPUT





1. Check Harness Connector Between TCM And Diagnosis Switch.
1) Turn ignition switch OFF.
2) Disconnect connector from TCM.
3) Measure resistance of harness connector between TCM and diagnosis switch.
Connector & terminal / Specified resistance: (B53) No. 6 - (B58) No. 5 / 1 ohm, 0r less.





4) Measure resistance of harness connector between TCM and body to make suer that circuit does not short.
Connector & terminal / Specified resistance: (B53) No. 6 - Body / 1 M ohm, or more.





2. Check Input Signal For TCM.
1) Connect connector to TCM.
2) Turn ignition switch ON (with engine OFF)
3) Measure signal voltage for TCM while connecting and disconnecting the diagnosis terminal to diagnosis connector.
Connector & terminal / Specified voltage: (B53) No. 6 - Body / Less than 1 V (Connected) More than 6 V (Disconnected)





3. Check Diagnosis Switch Ground Line.
1) Measure resistance of harness terminal between diagnosis terminal and body.
Connector & terminal / Specified resistance: (B57) - Body / 1 ohm, or less