Mercury 3.0 Liter Service Manual Page 75
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90-898303
3-16
225 EFI/250 EFI Warning Panel (3 Function
Gauge)
Operation of Warning Panel
When the ignition key is initially turned on, the warning horn will sound (beep)
for a moment as a test to tell you the system is working. Failure of this test
sound (beep) indicates a problem with the outboard or warning panel.
LOW OIL LEVEL
The low oil level warning is activated when the remaining oil in the engine
mounted oil reservoir tank drops below 50 fl. oz. (1.5 liters).
The Low Oil Indicator Light will come on and the warning horn will begin a
series of four beeps. If you continue to operate the outboard, the light will stay
on and the horn will beep every two minutes. The engine has to be shut off to
reset the warning system.
a) Low Oil Level Indicator Light
ENGINE OVERHEAT
The engine overheat warning is activated when the engine temperature is too
hot.
The Engine Overheat Indicator Light will come on and the warning horn
sounds continuously. The warning system will automatically limit the engine
speed to 3000 RPM.
a) Engine Overheat Indicator Light
Notes
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- Outboard V6 EFI 1
- Speed/Density System 5
- Ignition 10
- 2.4/2.5L Fuel Flow Component 15
- Fuel Pressure Regulator 17
- Fuel Injectors 17
- 1987–1999 2.4L & 2.5L 18
- 2000–2001 2.5L 18
- EFI Electrical Components 19
- 12 VOLT BATTERY 20
- FUEL INJECTORS 20
- 2.4L & 2.5L (1987–1999) 21
- 2-18 23
- VOLTAGE TEST CHART 24
- 2-20 25
- Ignition Systems 26
- 2-22 27
- 2-24 29
- Idle Stabilizer Shift System 31
- 2-28 33
- Theory of Operation 34
- #1 Cylinder Trigger Circuit 35
- Ignition Coil Circuit 35
- Stop Circuit 35
- Control Module 36
- Bias Circuit 36
- Shift Stabilizer Circuit 36
- Idle Stabilizer Circuit 36
- 2-32 37
- 2.0/2.5 LITRE 6 CYL.: 37
- 2-34 39
- Miscellaneous Checks 41
- Low Battery Voltage 42
- Ignition Spark Check 43
- 2-40 44
- Adjustment 45
- 2-42 46
- 2-46 49
- ECM Injector Driver Test 50
- Marine Diagnostics 51
- 824003 Fuel ECM 52
- Injector Test 53
- Multi Pulse Test 55
- 824003 ECM 56
- 2-56 58
- Programmable - ECM History 59
- 1995-2001 3.0L Fuel Flow 63
- ELECTRIC FUEL PUMP 65
- 3.0L Fuel Pump Test 67
- 3.0L ECM Wiring Diagram 68
- FLYWHEEL 73
- CRANK POSITION SENSOR 73
- THROTTLE POSITION SENSOR 73
- ENGINE TEMPERATURE SENSOR 73
- SHIFT INTERUPT SWITCH 74
- 3.0L LITRE 6 CYLINDER 74
- Operation of Warning Panel 75
- ENGINE OVER-SPEED 76
- 3 Function Gauge Wiring 77
- Injector Test (Cont.) 79
- Single Pulse Test 81
- 3.0L EFI Scan Data Worksheet 82
- Ignition ECM 83
- 3.0L PROM ID Chart 84
- 3.0L PROM ID Chart (Cont.) 85
- Oil Injection Components 94
- Priming The Oil Pump 95
- Priming Procedure – Method 1 96
- Ignition Coil 100
- Electronic Control Module 101
- Flywheel 102
- Crank Position Sensor 102
- 90-898303 103
- VISUAL INSPECTION 105
- SENSOR HEAT TEST 105
- SENSOR PRESSURE TEST 106
- DDT TEST 107
- Air Temperature Sensor 108
- VOLTAGE TEST 110
- Spark Plugs and Wires 113
- Main Power Relay 114
- Stop Switch Circuit 114
- Shift Interrupt Switch 114
- Water Sensing System 115
- 2002 Warning System Signals 118
- Guardian Protection System 119
- Guardian System Activation 120
- Smartcraft Data Worksheet 121
- Description 124
- Overview 127
- SmartCraft System Products 127
- SmartCraft System Rules 128
- System Monitor 130
- Section 5 - Product Changes 131
- Table of Contents 132
- Model Year Changes 133
- 2004 MY 134
- 2004 RUNNING CHANGE 134
- New Model - 200 HP 3.0 Litre 135
- Returnable Engine Carton 136
- Shift Link 3.0 EFI 139
- Starter Motor – 2.5 and 3.0L 140
- Control Harnesses 141
- New Decal Design 144
- Power Trim Rams 144
- Dielectric Grease 145
- Drive Shaft Seal Carrier 145
- Upper Engine Mounts 146
- Thermostat Discharge Fitting 146
- Special Tools 150
- Spark Board - P/N 91-850439T 153
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