Kawasaki J300 - Service manual > DFI Servicing Precautions

Fuel System (DFI) / DFI Servicing Precautions

DFI Servicing Precautions

There are a number of important precautions that should be followed servicing the DFI system.

DFI Servicing Precautions

DFI Servicing Precautions

DFI Servicing Precautions

Troubleshooting the DFI System

Outline

When a problem occurs with DFI system, the yellow engine warning indicator light (LED) [A] blinks on to alert the rider.

Troubleshooting the DFI System

And the engine warning symbol [A] and the service code (error code) [B] are displayed on the LCD by the number of two digits.

Troubleshooting the DFI System

When the service code is displayed, for first ask the rider about the conditions [A] of trouble, and then start to determine the cause [B] of problem.

As a pre-diagnosis inspection, check the ECU for ground and power supply, the fuel line for no fuel leaks, and for correct pressure. The pre-diagnosis items are not indicated by the yellow engine warning indicator light (LED).

Don't rely solely on the DFI self-diagnosis function, use common sense.

Troubleshooting the DFI System

Even if the repair has been done, the service codes stored in memory of the ECU are not erased to preserve the problem history. But, the service code can be erased with the specified procedures.

When the motorcycle is down, the vehicle-down sensor operates and the ECU shuts off the fuel pump relay, fuel injectors and ignition system. The ignition switch is left on.

If the starter button is pushed, the electric starter turns but the engine does not start. To start the engine again, raise the motorcycle, turn the ignition switch off, and then on.

Much of the DFI system troubleshooting work consists of confirming continuity of the wiring. The DFI parts are assembled and adjusted with precision, and it is impossible to disassemble or repair them.

Special Tool - Needle Adapter Set: 57001-1457

Troubleshooting the DFI System

NOTICE Insert the needle adapter straight along the terminal in the connector to prevent short-circuit between terminals.

NOTICE Incorrect, reverse connection or short circuit by needle adapters could damage the DFI or electrical system parts.

Sealant - Liquid Gasket, TB1211: 56019-120

Troubleshooting the DFI System

If the tester does not read about 0 Ω, the lead is defective.

Replace the lead or the main harness.

Troubleshooting the DFI System

Troubleshooting the DFI System

DFI Diagnosis Flow Chart

Troubleshooting the DFI System

Inquiries to Rider

Sample Diagnosis Sheet

Troubleshooting the DFI System

Troubleshooting the DFI System

DFI System Troubleshooting Guide

NOTE

Engine Won't Turn Over

DFI System Troubleshooting Guide

Poor Running at Low Speed

DFI System Troubleshooting Guide

DFI System Troubleshooting Guide

Poor Running or No Power at High Speed:

DFI System Troubleshooting Guide

DFI System Troubleshooting Guide

DFI System Troubleshooting Guide

See also:

 Kawasaki J300 - Service manual > Exploded View, DFI System/Parts Location, Specifications, Special Tools

Exploded View

 Kawasaki J300 - Service manual > Self-Diagnosis