GL1200 Ltd. and SEI Repair -- The TW Sensor

The TW Sensor is located on top of the engine block, just slightly above
the Fuel Pump. The TW Sensor connector is at the top front of the frame
near the Steering Head. It is a BLUE 2 pin connector.

With the Connector REMOVED and the KEY ON, measure between the two
terminals with the VOLTMETER. (back towards the ECU side) You should have a
reading in the 4.75 - 5.25 VOLT range.

If you do NOT, check the wiring harness and connectors back to the ECU. It
is also possible that you have lost the 5 VOLT Regulated Power Supply in
the ECU.

With the KEY OFF and the Connector REMOVED, Measure across the T-W Sensor
TERMINALS with an OHMETER. You should have a reading between 1K-3K Ohms at
room temperature. (1000 - 3000 Ohms.) If the reading is not within this
range, REPLACE the T-W Sensor.

ADDITIONAL CHECKS FOR THE T-W SENSOR

Remove the T-W Sensor.(Drain the Cooling system first) Suspend it in water
so that it os NOT touching the sides of the pan. APPLY HEAT. (The kitchen
Stove will work) As the temperature rises, the Ohms should fall back to 300
- 400 Ohms at about 175 Degrees.

Comment: Use a thermometer in the pan, or be able to monitor the water
temperature in some way.
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