0324834 EVINRUDE ADJUSTING KNOB, Slow speed

Table 1
Diagnostic Trouble Codes for Sensor Supply
J1939 Code Description Notes
100-10 Engine Oil Pressure : Abnormal Rate of Change This code indicates that the output from the oil pressure sensor has been abnormally steady for more than 30 seconds. Usually, this condition occurs because the sensor is not receiving any supply voltage.
During normal engine operation, the signal from the oil pressure sensor continuously fluctuates by a very small amount. When the 5 volt supply is missing from the sensor, the sensor's signal goes to a midrange value. The signal does not fluctuate. If the sensor's signal remains abnormally steady for more than 30 seconds, the Engine Control Module (ECM) activates this code. A snapshot is triggered. The ECM uses a default value for the output from the sensor.
The engine must be running and the 5 volt supply must be OK in order for this code to become active.
The most likely cause of this code is an open in the supply circuit for the sensor.
102-10 Engine Intake Manifold #1 Pressure : Abnormal Rate of Change This code indicates that the output from the intake manifold pressure sensor has been abnormally steady for more than 30 seconds. Usually, this condition occurs because the sensor is not receiving any supply voltage.
During normal engine operation, the signal from the intake manifold pressure sensor continuously fluctuates by a very small amount. When the 5 volt supply is missing from the sensor, the sensor's signal goes to a midrange value. The signal does not fluctuate. If the sensor's signal remains abnormally steady for more than 30 seconds, the ECM activates this code. A snapshot is triggered. The ECM sets the value of the intake manifold pressure to 100 kPa (14.5 psi). As a result, engine power is reduced.
The engine must be running and the 5 volt supply must be OK in order for this code to become active.
The most likely cause of this code is an open in the supply circuit for the sensor.
3509-3 Sensor Supply Voltage 1 : Voltage Above Normal This code indicates that the voltage of sensor supply 1 is above normal. During normal engine operation, the supply voltage should not exceed 5.16 VDC.
If the supply voltage exceeds this value for more than one second, a snapshot is triggered. Engine power is reduced. The code is activated.
3509-4 Sensor Supply Voltage 1 : Voltage Below Normal This code indicates that the voltage of the 5 volt supply is below normal. During normal engine operation, the 5 volt supply should not go below 4.84 VDC.
If the 5 volt supply goes below this value for more than one second, a snapshot is triggered. Engine power is reduced. The code is activated.
3510-3 Sensor Supply Voltage 2 : Voltage Above Normal This code indicates that the voltage of sensor supply 2 is above normal. During normal engine operation, the supply voltage should not exceed 5.16 VDC.
If the supply voltage exceeds this value for more than one second, a snapshot is triggered. Engine power is reduced. The code is activated.
3510-4 Sensor Supply Voltage 2 : Voltage Below Normal This code indicates that the voltage of the 5 volt supply is below normal. During normal engine operation, the 5 volt supply should not go below 4.84 VDC.
If the 5 volt supply goes below this value for more than one second, a snapshot is triggered. Engine power is reduced. The code is activated.
Follow the troubleshooting procedure in order to determine the root cause of these codes.
Illustration 1 g01953480
Schematic diagram for sensor supply 1
Illustration 2 g01324921
Schematic diagram for sensor supply 2
Test Step 1. Identify the Diagnostic Code
Establish communication between Cat ET and the ECM. Refer to Troubleshooting, "Electronic Service Tools", if necessary.
Identify the diagnostic code. Results:
Logged -3 code or -4 code - Proceed to Test Step 2.
Logged -10 code. - Repair: Repair the open circuit between the P2 connector and the appropriate sensor connector. Verify that the problem is resolved.STOP
Active 3509-3 code or 3509-4 code - There is a problem that relates to sensor supply 1. Proceed to Test Step 3.
Active 3510-3 code or 3510-4 code - There is a problem that relates to sensor supply 2. Proceed to Test Step 5.Test Step 2. Wiggle the Wiring and Look for ProblemsCarefully following this procedure is a good way to identify the root cause of an intermittent problem.
Verify that the engine is OFF and that the keyswitch is ON.
Configure Cat ET to display the active diagnostic codes. Note: Problems with the circuit must exist for at least one second before a diagnostic code for the 5 volt supply becomes active.
Slowly wiggle the wiring and the connectors between the appropriate ECM connector and each sensor. Pay particular attention to the wiring near each connector. Be sure to wiggle all of the wiring between the ECM connector and each sensor. As you wiggle the wiring, observe the wiring and the connectors. Look for these problems:
Loose connectors or damaged connectors
Moisture on the connectors or the wiring
Damage that is caused by excessive heat
Damage that is caused by chafing
Improper routing of wiring
Damaged insulationAs you wiggle the wiring, monitor the active diagnostic screen on Cat ET. Look for the code to become active.Expected Result:A "5 Volt Supply" diagnostic code became active when the wiring was wiggled.Results:
Yes - A "5 Volt Supply" diagnostic code became active when the wiring was wiggled.Repair: Repair the wiring, when possible. Replace parts, if necessary. Verify that the problem is resolved.STOP
No - A "5 Volt Supply" diagnostic code did not become active when the wiring was wiggled.Repair: There may be a problem inside a connector. Perform the following procedure:
Disconnect the connectors for the sensors that relate to the diagnostic code. Carefully inspect the terminals in each connector for proper installation. Each terminal must be clean and dry. Clean the terminals, if necessary. Pull on each wire at the harness connector in order to verify that the crimp is OK and that the terminal is installed correctly. Repair any problems.
Insert a pin into each socket. Verify that each socket grips the pin firmly. Repair any problems. Note: