Service Manual — page 136 of 715

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3-46 FUEL SYSTEM (DFI)
Self-Diagnosis

            DTC
Service (Diagnostic
                          System                                Problems
 Code     Trouble
           Code)
                                       Secondary air switching valve malfunction, wiring open,
   64        P0410           FI
                                       short to ground or power supply wire
                                       Heater malfunction, wiring open, short to ground or power
   67        P0030           FI
                                       supply wire
                                       Purge valve malfunction, wiring open, or short to ground
   3A        P0443           FI
                                       or power supply wire

Notes:
○The ECU may be involved in these problems. If all the parts and circuits checked out good, be sure
 to check the ECU for ground and power supply. If the ground and power supply are checked good,
 replace the ECU.
○When no service code is displayed, the electrical parts of the DFI system has no fault, and the
 mechanical parts of the DFI system and the engine are suspect.
○DTC (Diagnostic Trouble Code) is displayed on the Kawasaki Diagnostic System (KDS Ver.3) and
 the Generic Scan Tool (GST).
Backups
○The ECU takes the following measures to prevent engine damage when the DFI, ignition or immo-
 bilizer system parts have troubles.
Service    Parts or       Output Signal Usable
                                                                  Backups by ECU
Codes      Function        Range or Criteria
                                                    If the main throttle sensor system fails (the
                                                    output voltage is out of the usable range,
                                                    wiring short or open), the ECU locks ignition
          Main Throttle Output Voltage
   11                                               timing into the ignition timing at closed throttle
            Sensor      0.2 ∼ 4.8 V
                                                    position and sets the DFI in the D-J method
                                                    (1). Then the ECU stops the KTRC and the
                                                    feedback control with the oxygen sensor.
                                                    If the intake air pressure sensor #1 system
                                                    fails (the signal is out of the usable range,
           Intake Air   Intake Air Pressure
                                                    wiring short or open), the ECU sets the DFI
   12       Pressure    (Absolute)
                                                    in the α-N method (2). Then the ECU stops
           Sensor #1    Pv = 150 ∼ 800 mmHg
                                                    the KTRC and the feedback control with the
                                                    oxygen sensor.
                                                    If the intake air temperature sensor system
           Intake Air                               fails (the signal is out of the usable range,
                      Intake Air Temperature
   13     Temperature                               wiring short or open), the ECU sets Ta at 40°C.
                      Ta = – 30 ∼ + 120°C
             Sensor                                 Then the ECU stops the feedback control with
                                                    the oxygen sensor.
                                                    If the water temperature sensor system fails
             Water                                  (the signal is out of the usable range, wiring
                      Water Temperature
   14     Temperature                               short or open), the ECU sets Tw at 80°C and
                      Tw = – 30 ∼ + 120°C
            Sensor                                  the radiator fan operates. Then the ECU stops
                                                    the feedback control with the oxygen sensor.
                                                    If the intake air pressure sensor #2 system fails
                                                    (the signal is out of the usable range, wiring
           Intake Air   Atmospheric Pressure
                                                    short or open), the ECU sets Pa at 760 mmHg
   16       Pressure    (Absolute)
                                                    (the standard atmospheric pressure). Then the
           Sensor #2    Pa = 100 ∼ 900 mmHg
                                                    ECU stops the KTRC and the feedback control
                                                    with the oxygen sensor.