6 - 9
FI
FUEL INJECTION SYSTEM
TROUBLESHOOTING
Diagnosis mode troubleshooting 1 (self-diagnostic malfunction detected)
By entering a diagnostic code in the ECU through the use of the “SELECT” and “RESET” buttons on
the tachometer, the sensor output values can be displayed and the actuators can be operated in
accordance with the code that has been entered.
The technician determines whether or not the operation is normal by verifying the values displayed
on the tachometer or the operating conditions of the actuators. These modes can be used to detect
and check the problems that are otherwise difficult to detect in the diagnosis mode.
Basic operation procedure
Operation preparation
• Verify the self-diagnostic fault code number that is displayed on the meter.
• Based on the self-diagnostic fault code number, select the applicable sensor or actuator from the
diagnostic code table.
• If a diagnostic code is available, proceed with the operation procedure given below in order to
verify the operating conditions of the applicable sensor or actuator.
Operation procedure (make sure to turn “OFF” the main switch upon completing the operation prep-
aration)
Setting the ECU in the diagnosis mode
1. While keeping the “SELECT” and “RESET”
buttons pressed simultaneously, turn “ON”
the main switch
1
(keep them pressed for
8 seconds or more).
* Letters “dIAG” appear on the clock LCD.
Selecting the diagnosis mode
After “dIAG” appears as a result of pressing
the “SELECT” button, simultaneously press
the “SELECT” and “RESET” buttons for 2 sec-
onds or more to execute the selection.
OFF
ON
TRIP
km
mile
TRIP
km
mile
0D0
T
1
TRIP
km
mile
0D0
SELECT
RESET
