Coolant Temperature Sensor; Air Temperature Sensor - KTM 990 Adventure Repair Manual

1
Sensor-characteristics
1 4 0
1 2 0
1 0 0
8 0
6 0
Temperature (ºC)
4 0
2 0
0
2 - 0
Voltage (Volt)
4 - 0
0 0 5 , 1 1 5 , 2 2 5 ,

Coolant temperature sensor

The signal from the coolant temperature sensor
the KTM diagnostics tool (see table for voltage figures).
If the displayed value does not correspond to the actual temperature or
if an error code is displayed, perform the following tests:
– Ground supply (black cable) at the sensor connector AX.
– Check the wiring and the connector for continuity to the control unit
– Measure the resistance of the coolant temperature sensor.
T W
T A
TW: Coolant temperature sensor
TA: Air temperature sensor
3 3 5 , 4 4 5 , 5

Air temperature sensor

The signal from the air temperature sensor can be scanned with the
KTM diagnostics tool (see table for voltage figures).
If the displayed value does not correspond to the actual temperature or
if an error code is displayed, perform the following tests:
– Ground supply (black cable) at the sensor connector CM.
– Check the wiring and the connector for continuity to the control unit
– Measure the resistance of the air temperature sensor.
(control unit disconnected).
Resistance at -20º C: 15 kΩ +/- 1.5 kΩ
Resistance at 20º C: 2.45 kΩ +/- 240 Ω
Resistance at 80º C: 318 Ω +/- 31 Ω
(input)
(control unit disconnected).
Resistance at -20º C: 18.8 kΩ +/- 2.3 kΩ
Resistance at 40º C: 1.136 kΩ +/- 95 Ω
Resistance at 100º C: 155.3 Ω +/- 7 Ω
(input)
can be scanned with
1
7-45