Tracker Off-Road XTR1000 Service Manual page 89

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2. Select DC Voltage on the tester and turn the ignition
switch to the ON position.
3. Connect the black tester lead to the black/blue wire and
the red tester lead to the pink/violet wire. The meter
should read 4.5-5.5 DC volts. If the meter does not
read as specified, check the ECM connector or wiring.
ENGINE COOLANT TEMPERATURE
(ECT) SENSOR
Component data can be retrieved using the Dealer Diag-
nostic Service. Utilize the Sensor Data screen.
 NOTE: Preliminary checks may be performed on
this component using the diagnostic mode on the LCD
gauge (see Gauge Diagnostic Menu in this section).
1. Disconnect the connector from the sensor located
below the intake (A) in the thermostat housing (B);
then remove the engine coolant temperature (ECT)
sensor.
 NOTE: When removing sensor, coolant will come
out.
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2. Set the meter selector to the OHMS position; then
connect one lead to an outer spade terminal; then
connect the other lead to the other outer spade termi-
nal; then suspend the sensor and a thermometer in a
container of cooking oil; then heat the oil.
NOTE: Neither the sensor nor the thermometer

should be allowed to touch the bottom of the con-
tainer or inaccurate readings will occur. Use wire
holders to suspend the sensor and thermometer.
! WARNING
Wear insulated gloves and safety glasses. Heated oil
can cause severe burns.
88
3. If the readings are not approximately as indicated,
the sensor must be replaced.
TEMPERATURE
40° C (104° F)
100° C (212° F)
4. Install the sensor and tighten securely; then connect
the connector to the sensor.
5. Fill the cooling system as necessary.
ENGINE OIL PRESSURE SWITCH
The switch is normally closed when the engine is not run-
ning or does not have sufficient oil pressure. The switch
becomes open at approximately 19.3 kPa (2.8 psi).
1. Disconnect the connector from the engine oil pres-
sure switch located next to the engine oil filter.
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2. Set the meter selector to the OHMS position; then
connect the red tester lead to the pin inside the switch
and the black tester lead to a ground. The switch
should have less than 1 ohm of resistance.
3. Start the engine the switch should now be open and
the multimeter should read OL. If the switch does
not open, verify engine oil pressure is greater than
19.3 kPa (2.8 psi). If engine oil pressure is greater
than 19.3 kPa (2.8 psi), replace the engine oil pres-
sure switch.
SPEED SENSOR
NOTE: Prior to testing the speed sensor, inspect the

three-wire connector on the speed sensor for contami-
nation, broken pins, and/or corrosion.
OHMS
1128-1144
151-159