ELECTRICAL AND ECU
12-16
BY Service Manual
Component Tests
Oil Pressure Sensor
This sensor measures the engine oil pressure and
sends the signal to the helm gauge. It is a pressure
sensitive variable resistor. It is mounted in the front
heat exchanger bracket and is connected to the
engine block via a pressure line.
The sensor output is not used by the ECU.
Results of Failed Sensor
Failure of the sensor results in:
• Loss of engine oil pressure monitoring
If this sensor is defective, no P-codes will be
generated.
Test Values
• Resistance at 0 bar (0 psi): 10 +3 -5 ohm
• Resistance at 2 bar (29 psi): 52 ±4 ohm
• Resistance at 4 bar (58 psi): 88 ±4 ohm
• Resistance at 6 bar (87 psi): 124 ±5 ohm
Figure 12-9
1 – Engine harness
2 – Engine harness
Note: Polarity in not important.
Fuel Injector
The fuel injectors are continuously supplied with
high-pressure fuel and are electronically triggered
by the ECU. The ECU controls the frequency,
duration, and timing of injection.
Results of Failed Injector
If an injector-related failure occurs, the following
P-codes may be generated:
• P2049 - Short circuit on high side to ground or B+
• 4BY - engine will stop
• 6BY - engine may continue to run
• P2052 - Short circuit on high side to ground or B+
• Engine may continue to run
• P0261, P0264, P0267, P0270, P0273, P0276 -
short circuit to B+
• P0201, P0202, P0203, P0204, P0205, P0206, -
no connection / short to ground
Note: A minimum of two injectors must function
for the 4BY to run. A minimum or three
injectors must function for the 6BY to
run.
Test Values
• Resistance at 20°C (68°F): 0.4 ohm
Figure 12-10
1 – Pin 1 - Low side
2 – Pin 2 - High side
0004171
(2)
(1)
0004169
1
2
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