165
OILING SYSTEM
COMPONENTS
8
Oil Injection Pump
The oil injection pump is an electric (55 V) actua-
tor style pump. It draws oil from the oil tank
through the oil supply hose [25 ft. (7.6 m) maxi-
mum] and supplies pressurized oil to the oil mani-
fold. The EMM supplies 55 V and controls
activation of the pump.
The oil manifold distributes the oil supplied by the
oil injection pump to the crankcase. On 3.3 L mod-
els oil is also distributed to the rear oil manifold.
Electrical Circuit (55 V)
The oil injector is powered by the 55 V electrical
circuit. The EMM controls pump operation by rap-
idly connecting and disconnecting the pump’s
internal coil to ground.
The EMM monitors the oil injection pump electri-
cal circuit. If circuit voltage is beyond the specified
range (open circuit), the EMM:
Oil Pressure Sensor
The oil pressure sensor reacts to changes in oil
manifold pressure. The EMM supplies and moni-
tors electrical current to the sensor.
• The sensor provides an output voltage to the
EMM based on oil manifold pressures.
• 5 VDC Input on RED wire
• 0.5 - 4.5 V Output on TAN / WHITE wire
• Ground on BLACK wire
The EMM monitors the oil pressure sensor’s elec-
trical circuit. If circuit voltage is beyond the speci-
fied range (< 0.15 V, > 4.85 V), the EMM:
If oil pressure is below expected range (< 0.4 V),
the EMM:
If oil pressure is above expected range (> 4.6 V),
the EMM:
Refer to Oil Pressure Sensor on p. 59.
1. Oil injection pump
2. Oil manifold
004220
Activates S.A.F.E.
Stores service code 34
EMM LED 4: ON (Running)
Engine Monitor NO OIL display: ON
1. Oil pressure sensor 04220
Stores service code 71
EMM LED 3: ON (Running)
Stores service code 72
EMM LED 3: ON (Running)
Stores service code 73
EMM LED 3: ON (Running)
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