Perkins 1104E Series - Diagnostic Functional Tests; 5 Volt Engine Pressure Sensor Supply Circuit - Test

92 RENR2696-01
Troubleshooting Section
Diagnostic Fun
ctional
Tests
i01798194
5 Volt E ngine Pressure Se nso r
SupplyCircuit-Test
System Opera
tion Description:
Use this procedure under the following situation:
Use this procedure if another procedure has directed
you here. Also use this procedure if any of the
following di
agnostic codes are active:
•
262-03 5 Volt Sensor Power Supply voltage more
than normal
•
262-04 5 Volt Sensor Power Supply voltage less
than normal
The following background information is related
to this proc
edure:
The Electronic Control Module (ECM) supplies
regulated +
5 VDC to the following sensors:
•
J201/P201 Engine Oil Pressure Sensor
•
J200/P200 Intake Manifold Pressure Sensor
•
J40/P40 Thr
ottle Sensor
The supply for the +5 V engine pressure sensor is
routed from
the ECM through ECM engine harness
connector J1/P1 terminal 2 to terminal “A” of each
pressure sensor connector. The supply voltage is 5.0
± 0.5 VDC.
The +5 V short circuit diagnostic code is probably
caused by a
short circuit or an open circuit in the
harness. The next probable cause is a sensor and
the least probable cause is the ECM.