Table 2. Engine Troubleshooting with Codes for the 120M Motor Grader - Continued.
CDI FMI CODE
0100-04 Engine Oil Pres-
sure Sensor Voltage Below
less than 5.0 Ohms)- 5-volt supply
Normal - Continued
harness connector EA-C1 (WP
circuit L730-OR tests OK. Engine
0009, Figure 3) terminal 47 and
ECM faulty, replace Engine ECM (WP
There should be good continuity.
Connect the engine oil pressure sen-
sor harness connector EA-C5 (WP
Remove jumper wire from EA-C5 (WP
0009, Figure 19) terminal 1 and termi-
harness is open, replace engine con-
trol wiring harness (WP 0080).
0100 10 Engine Oil Pressure
Sensor Abnormal Rate of
A warning will appear on instru-
ECM will flag engin oil pressure
as invalid data.
Possible Performance Effect:
N OT E
The 5-Volt supply circuit is a common supply circuit which is bussed
internally of the Engine ECM. The supply voltage is 5.0 ± 0.16 Volts.
Out put of the 5-Volt supply circuit is at Engine ECM J2-46 circuit T997-
OR, J2-47 circuit L730-OR, J2-48 circuit R997-OR, and J1-42 circuit
R997-OR. The 5-Volt supply circuits are supplied to the intake manifold
pressure sensor terminal 1, the engine oil pressure sensor terminal 1,
the fuel rail pressure sensor terminal 1, and the turbocharger air inlet
pressure sensor terminal A.
Each sensor has a return or ground circuit and is a common supply
circuit which is bussed internally of the Engine ECM. The sensor return
circuit is at Engine ECM J2-40 circuit Y940-BR, J2-39 circuit Y947-BR,
J2-38 circuit T993-BR, and J1-34 circuit R993-BR.
The engine oil pressure sensor signa circuit is an input to the Engine
ECM at Engine ECM J2-46 circuit 994-GY.