Troubleshooting Method

FUEL INJECTION SYSTEM

                                                                                                 Able / un-
   Fault                                                                          Able / un-
                       Item                           Symptom                                     able to
 code No.                                                                        able to start
                                                                                                   drive
                                   Faulty ECU memory. (When this
             ECU internal malfunc- malfunction is detected in the
 50                                                                               Unable         Unable
             tion                  ECU, the fault code number might
                                   not appear on the meter.)

Communication error with the meter
                                                                                                 Able / un-
   Fault                                                                          Able / un-
                       Item                           Symptom                                     able to
 code No.                                                                        able to start
                                                                                                   drive
             ECU internal malfunc-
                                   No signals are received from the
 Er-1        tion                                                                 Unable         Unable
                                   ECU.
             (output signal error)
             ECU internal malfunc-
                                   No signals are received from the
 Er-2        tion                                                                 Unable         Unable
                                   ECU within the specified duration.
             (output signal error)
             ECU internal malfunc-
                                   Data from the ECU cannot be re-
 Er-3        tion                                                                 Unable         Unable
                                   ceived correctly.
             (output signal error)
             ECU internal malfunc-
                                   Non-registered data has been re-
 Er-4        tion                                                                 Unable         Unable
                                   ceived from the meter.
             (input signal error)

EAS27400
                                                            2. Check and repair the probable cause of mal-
TROUBLESHOOTING METHOD
                                                               function.
The engine operation is not normal and the                      Fault code No.         No fault code No.
engine trouble warning light comes on.                      Check and repair.     Check and repair.
1. Check:                                                   Refer to “TROUBLE-
 • Fault code number                                        SHOOTING DE-
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼                            TAILS” on page 8-77.
a. Check the fault code number displayed on                 Monitor the opera-
   the meter.                                               tion of the sensors
b. Identify the faulty system with the fault code.          and actuators in the
   Refer to “Self-Diagnostic Function table”.               diagnostic mode. Re-
c. Identify the probable cause of the malfunc-              fer to “Sensor opera-
   tion. Refer to “Fault code table”.                       tion table” and
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲                            “Actuator operation
                                                            table”.
                                                            3. Perform fuel injection system reinstatement
                                                               action.
                                                               Refer to “Reinstatement method” of table in
                                                               “TROUBLESHOOTING DETAILS”.
                                                            4. Turn the main switch to “OFF” and back to
                                                               “ON”, then check that no fault code number is
                                                               displayed.
                                                        NOTE:
                                                            If fault codes are displayed, repeat steps (1) to
                                                            (4) until no fault code number is displayed.

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