DR ALL-TERRAIN Wartungshandbuch PDF herunterladen (Seite 93)

100

101

FUEL SYSTEM (DFI) 3-29

DFI System Troubleshooting Guide

Symptoms or possible Causes Actions (chapter)

Brake lever or pedal not pulled in and gear not

in neutral

Pull the brake lever or pedal in.

Vehicle-down sensor coming off Reinstall (see chapter 3).

Vehicle-down sensor trouble

Inspect (see chapter 3).

ECU ground or power supply trouble Inspect (see chapter 3).

Battery voltage low Inspect and charge (see chapter 16).

Spark plug dirty, broken or gap maladjusted Replace (see chapter 2).

Ignition coil trouble Inspect ignition coil (see chapter 16).

Ignition coil shorted or not in good contact Reinstall or inspect ignition coil (see chapter 16).

Spark plug incorrect Replace it with the correct plug (see chapter 16).

IC igniter in ECU trouble Inspect (see chapter 16).

Crankshaft sensor trouble Inspect (see chapter 16).

Ignition coil trouble Inspect (see chapter 16).

Ignition switch shorted Inspect and replace (see chapter 16).

Engine stop switch shorted Inspect and repair or replace (see chapter 2).

Starter system wiring shorted or open Inspect and repair or replace (see chapter 16).

Main 30A fuse blown Inspect and replace (see chapter 16).

Fuel/air mixture incorrect:

Air cleaner clogged, poorly sealed or missing Clean or reinstall (see chapter 3).

Leak from oil filler cap, crankcase breather hose

or air cleaner drain plug

Inspect and repair or replace (see chapter 3).

Water or foreign matter in fuel Change fuel. Inspect and clean fuel system (see

chapter 3).

Fuel pressure regulator trouble

Inspect fuel pressure and replace fuel pump (see

chapter 3).

Throttle sensor trouble

Inspect (see chapter 3).

Fuel pressure may be low Inspect (see chapter 3).

Fuel pump trouble Inspect (see chapter 3).

Fuel injector trouble Inspect (see chapter 3).

Inlet air pressure sensor trouble Inspect (see chapter 3).

Inlet air temperature sensor trouble

Inspect (see chapter 3).

Water temperature sensor trouble

Inspect (see chapter 3).

ISC valve trouble Inspect (see chapter 3).

Crankshaft sensor trouble Inspect (see chapter 3).

Compression low:

Spark plug loose Reinstall (see chapter 16).

Cylinder head not sufficiently tightened down Ti ghten (see chapter 5).

Cylinder, piston worn Inspect and replace (see chapter 5).

Piston ring bad (worn, weak, broken or sticking) Inspect and replace (see chapter 5).

Piston ring/groove clearance excessive Inspect and replace (see chapter 5).

Cylinder head gasket damaged Replace (see chapter 5).

Cylinder head warped Inspect and replace (see chapter 5).

No valve clearance

Adjust (see chapter 2).

Valve guide worn

Inspect and replace (see chapter 5).

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