New Holland T8010 Manual page 1417

Air To Air Intake Temperature Sensor Signal Too High
Cause:
Air to air intake temperature sensor voltage out of range high.
Possible failure modes:
1. Air to air intake oil temperature sensor failed.
2. Air to air intake oil temperature sensor wiring harness problems (open circuit, short to power).
3. .Instrument controller failure.
Solution:
Check the air to air intake temperature sensor resistance, the instrumentation controller and the wiring from the
instrument controller to the air to air intake temperature sensor.
1. Test the resistance of the air to air intake temperature sensor.
Open the tractor hood and locate the air to air intake temperature sensor.
Disconnect connector C075 from the air to air intake temperature sensor.
Inspect pin A and B in the connector. Clean the connection. Clean the mating pin and the connector.
Use the table below and measure the sensor resistance between pin A and pin B.
If the resistance is not as specified, replace the air to air intake temperature sensor.
If it is as specified, go to the next Step.
2. Check the wiring from the air intake temperature sensor to connector C061 at the instrumentation controller.
The power supply at the pin A of the air to air intake temperature sensor connector should be about 5 VDC
when the tractor key is in the 'ON' position.
There should be good continuity from pin A of C075 to pin 8 of connector C334 to cavity 26 of connector C060
and then to cavity 17 of connector C061.
There should be good continuity between pin B of C075 and the clean ground.
Check for open circuit and shortage to ground.
NOTE: Always inspect connector ends for damaged, bent or dislocated pins when troubleshooting.
Section 55 - Electrical System, Controller - Chapter 2
FAULT CODE INST 13052
Temp Deg C
0
5
10
15
20
25
30
55-2-32
Ohms
32650
25390
19900
15710
12940
1000
8057