Komatsu PC88MR-10 Shop Manual page 533

List of pressure sensor measuring locations and reference values
Sensor
R2: between (2) and (4)
Charge pressure
sensor
R1: between (1) and (4)
*: When measuring R2', disconnect the following: (See the circuit diagram related to each failure code)
When measuring R2' of charge pressure sensor (CA123):
Connectors of ambient air pressure sensor, CAM sensor and boost pressure sensor
Measurement record (For measuring locations, see circuit diagram related to each failure code.)
Sensor
(Measuring location on
sensor pin side connetor)
R2: between (2) and (4)
Charge pressure
sensor
R1: between (1) and (4)
PC88MR-10
Measuring location at
sensor pin
Sensor unit
Related information on troubleshooting
Measured internal
resistance of sensor
(reference)
Approx. 100 z z
Approx. 200 z z
Sensor + Wiring harness
(Measuring location on
Measured value
wiring harness side
connector of engine
R2': Between (60) and
(59) (*)
R1': Between (15) and
(59)
40 Troubleshooting
Remarks
Sensor is common to engine
models 107 and 114
Measured value
controller)
40-45