GL1200 Ltd. and SEI Repair -- The T1 Sensor

The T1 Sensor is located on the top of the air cleaner cover.

The Connector is colored GREEN

This unit is held in place with a spring clip type retainer on each side of
the connector, that has to be GENTLY pulled back and out in order to
release the connector from the sensor.

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

If you do NOT, check the wiring harness/connectors back to the ECU, looking
for a bad connector. It is 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-1 Sensor
TERMINALS with an OHMETER. You should have a reading between 2K-3K Ohms at
room temoerature. (2000 - 3000 Ohms.) If the reading is not within this
range, REPLACE the T-1 Sensor.

ADDITIONAL CHECKS FOR THE T-1 SENSOR

Remove the T-1 Sensor. 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: It doesn't say this in anything that I have read about the GL1200
LTD, but it seems to me that 175 Degrees is very warm for the intake air
temperature. I would be carefull about heating the sensor up much more than
this. Use a thermometer in the pan, or be able to monitor the water
temperature in some way.
---------------------------------------------------------------------------
Table of Contents