Boost Pressure (Phy), Data Incorrect - New Holland CX720 Repair Manual

0472.2-BOOST PRESSURE (PHY), DATA INCORRECT (SERVICE
TOOL FAULT CODE 19) (B.30.A.95.81 - G.30.C.10)
CX840
0472.2 - BOOST PRESSURE (PHY), DATA INCORRECT (SERVICE TOOL FAULT CODE 19)
Context:
Engine enabled - no restriction on fuel or speed
Cause:
Signal range outside threshold limits
Signal not plausible or intermittent fault
Possible failure modes:
1. Faulty sensor
2. Faulty connector or wiring
Solution:
1. Mechanical Fault
A. Inspect the tubing between turbocharger and inlet manIfold. Ensure that no leakage points exist and all
connections are tight.
B. If the tubing and connections are okay continue with step 2.
2. Harness connector fault
A. Inspect the harness connector onto the sensor. Ensure that the connector is not damaged, the pins are
correctly located in the connector body and that it is a tight fit onto the sensor.
B. If the harness connector is okay continue with step 3.
3. Sensor Fault
Temperature in °C
-40 ± 1
-30 ± 1
-20 ± 1
-10 ± 1
0 ± 1
10 ± 1
20 ± 1
30 ± 1
40 ± 1
50 ± 1
60 ± 1
70 ± 1
80 ± 1
90 ± 1
100 ± 1
110 ± 1
120 ± 1
130 ± 1
A. Test the sensor. To test the pressure part of the sensor the voltage needs to be read on the output wire,
EN-889-YE, pin 4 of the connector. Using a suitable probe into the wire, the voltage should range from
POWER PRODUCTION - AIR INTAKE SYSTEM
Resistance in Ω
Minimum
38313
22362
13402
8244
5227
3396
2262
1555
1080
771
555
408
304
231
178
137
106
84
Nominal
45313
26114
15462
9397
5896
3792
2500
1707
1175
834
595
435
322
243
186
144
112
89
2 4/7/2006
B.30.A / 35
Maximum
53103
30258
17718
10661
6623
4222
2760
1867
1277
900
639
465
342
257
196
152
119
95