10.29
ELECTRICAL
10
EFI DIAGNOSTICS
EFI Component Testing
All EFI component information and diagnostic testing
procedures are located in
Chapter 4
.
Refer to
Chapter 4
“Electronic Fuel Injection System (EFI)”
when diagnosing an EFI System.
CHARGING SYSTEM
Current Draw - Key Off
Connect an ammeter in series with the negative battery cable.
Check for current draw with the key off. If the draw is excessive,
loads should be disconnected from the system one by one until
the draw is eliminated. Check component wiring as well as the
component for partial shorts to ground to eliminate the draw.
Charging System “Break Even” Test
The “break even” point of the charging system is the point at
which the alternator overcomes all system loads (lights, etc.)
and begins to charge the battery. Depending on battery condition
and system load, the break even point may vary slightly. The
battery should be fully charged before performing this test.
1. Connect a tachometer to the engine.
2. Using an inductive amperage metering device, (set to DC
amps) connect to the negative battery cable
3. With engine off and the key, kill switch, and lights in the
ON position, the ammeter should read negative amps
(battery discharge). Reverse meter lead if a positive reading
is indicated.
4. Shift transmission into neutral with the park brake on and
start the engine. With the engine running at idle, observe
meter readings.
5. Increase engine RPM while observing ammeter and
tachometer.
6. Note RPM at which the battery starts to charge (ammeter
indication is positive).
7. With lights and other electrical loads off, the “break even”
point should occur at approximately 1500 RPM or lower.
8. With the engine running, turn the lights on and engage
parking brake lock to keep brake light on.
9. Repeat test, observing ammeter and tachometer. With
lights on, charging should occur at or below 2000 RPM.
CAUTION
Do not connect or disconnect the battery cable
or ammeter with the engine running. Damage will
occur to electrical components.
Current Draw - Key Off:
Maximum of .01 DCA (10 mA)
Current Draw Inspection
Key Off
30 Amp
CAUTION
Do not allow the battery cables to become
disconnected with the engine running. Follow the
steps below as outlined to reduce the chance of
damage to electrical components.
WARNING
Never start the engine with an ammeter
connected in series. Damage to the meter or
meter fuse will result.
Do not run test for extended period of time.
Do not run test with high amperage accessories.
Содержание Ranger 500 2x4 2007
Страница 1: ......
Страница 7: ...1 5 GENERAL INFORMATION 1 VEHICLE DIMENSIONS 113 in 287 cm 58 in 147 cm 76 in 193 cm RANGER 2X4 4X4 ...
Страница 20: ...1 18 GENERAL INFORMATION SAE Tap Drill Sizes Metric Tap Drill Sizes Decimal Equivalents ...
Страница 82: ...3 23 ENGINE 3 Cylinder Head Exploded View EH50PL EFI Shown A A ...
Страница 153: ...4 45 ELECTRONIC FUEL INJECTION 4 Fuel Pump Circuit Ignition Coil Circuit ...
Страница 154: ...4 46 ELECTRONIC FUEL INJECTION Idle Air Control IAC Circuit Throttle Position Sensor TPS Circuit ...
Страница 155: ...4 47 ELECTRONIC FUEL INJECTION 4 Manifold Air Pressure Sensor MAP Circuit Engine Coolant Temperature Sensor Circuit ...
Страница 156: ...4 48 ELECTRONIC FUEL INJECTION Intake Air Temperature Sensor IAT Circuit Malfunction Indicator Light MIL Circuit ...
Страница 157: ...4 49 ELECTRONIC FUEL INJECTION 4 Diagnostic Connector Circuit ...
Страница 296: ...10 10 ELECTRICAL POWER DISTRIBUTION MODULE NON EFI MODELS PDM Operation ...
Страница 309: ...10 23 ELECTRICAL 10 EFI Cooling System Break Out Diagram PDM RD WH Key On 12 V Power ...
Страница 331: ...10 45 ELECTRICAL 10 ELECTRICAL BREAKOUT DIAGRAMS EFI MODELS Starting Circuit Key On Power Circuit ...
Страница 332: ...10 46 ELECTRICAL Transmission Switch Circuit Differential Solenoid Circuit ...
Страница 333: ...10 47 ELECTRICAL 10 Charging System Circuit Cooling Fan Circuit ...
Страница 334: ...10 48 ELECTRICAL AWD Circuit ...
Страница 339: ...WD 1 WIRE DIAGRAM RANGER 500 2X4 4X4 CHASSIS ...
Страница 340: ...WD 2 WIRE DIAGRAM RANGER 500 2X4 4X4 DASH ...
Страница 341: ...WD 3 WIRE DIAGRAM RANGER 500 EFI 4X4 CHASSIS PAGE 1 OF 2 ...
Страница 342: ...WD 4 WIRE DIAGRAM RANGER 500 EFI 4X4 CHASSIS PAGE 2 OF 2 ...
Страница 343: ...WD 5 WIRE DIAGRAM RANGER 500 EFI 4X4 DASH ...
Страница 344: ...WD 6 WIRE DIAGRAM RANGER 500 EFI 4X4 BREAKOUTS ...
Страница 345: ...WD 7 WIRE DIAGRAM RANGER 500 2X4 4X4 BREAKOUTS ...