Objective:
Checking Operation of the injection pump shaft position sensor.
Measurement:
Plot of voltage at the signal output for the injection pump shaft position sensor.
Preparation:
Switch off the engine and ignition.
Connections:
| INPUT A | COM/TRIGGER | INPUT B |
|---|---|---|
| Connect the red measurement lead to pin 2 of the plug connector for the injection pump shaft position sensor. Connect the ground lead to pin 1. |
The signal plot should be continuous and regular. If the amplitude or frequency of the signal plot varies greatly, in spite of the engine speed remaining constant, the fault must be traced using the checking procedure.
Procedure Tech 31:
- 1. Download Reference curve.
- 2. Start the engine and allow it to idle.
Reference Curve:
Procedure Tech 32:
- 1. Download Setup File (the Tech 32 uses only Setup files, no reference curves).
- 2. Start engine and allow it to idle.
