Here is the illustration show the service steps for JCB Backhoe Loaders 3CX/4CX/5CX hand throttle position sensor.
Related Contents:
WinEEM4s JCB Service Tool 2.7.2 2.6.1 Free Download
2024 JCB ServiceMaster 4 v24.6.2 Free Download for Win 10 Win11
2017 JCB Parts Plus+ and Repair Service Manual Free Download
Function
Determines hand throttle position set by the operator.
Location
On Backhoe Loader machines, the hand throttle position sensor is mounted under the front console.
Signal
Analogue voltage between 0 volts and 5 volts. Voltage output proportional to throttle lever position. Two throttle tracks are used to ensure safety of the operator in the case of throttle malfunction.
Internal Electrical Schematic
Testing
Important: Use the multi-meter on the harness connector pins. DO NOT use the meter on the ECU pins. (SN0011)
1 Disconnect the sensor.
2 Switch the ignition ON.
3 Check supply voltage is 5 volts (pins 1 and 4). Connector pin 3 and 6 should read ground (0 volts).
4 If voltages are incorrect, check harness for continuity and ground conditions, check ECU pins for evidence of contamination or corrosion.
5 Measure signal voltage from the throttle position sensor when the throttle is at idle.
a)Pin 2 = 1.0 to 1.2 volts.
b)Pin 5 = 0.4 to 0.6 volts.
6 Measure signal voltage when throttle is fully depressed.
a)Pin 2
How useful was this post?
Click on a star to rate it!
Average rating / 5. Vote count:
Please keep this link if you copy the post!