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E
DIAGNOSIS (SELF DIAGNOSIS FUNCTION)
GENERAL
When the computer detects a problem in the system, the fault is made known by a lighting a warning lamp and
displaying an error code on the combination meter, while at the same time failsafe functions operate to stop the
engine or control the engine to a low speed.
Diagnosis display system
1. Diagnosis display system
The diagnosis is displayed by means of an error code as
shown in the illustration to the left, and by the lights turning on.
When the IG switch is turned ON, the lamp lights once to allow
checking for the bulb, and then turns off again if the status is
normal.
When the IG switch is ON, if an abnormality occurs when the
vehicle is stopped, travelling, or when it is performing materials
handling operations, on detection of the abnormality an error
code is displayed, the engine light turns on, and the spanner
lamp flashes as a warning.
When this happens, stop the vehicle quickly and check the
error code.
2. Diagnosis display system
The diag memory has a system using the hour meter and tilt lever, a system using the option display, and a
system using a plug-in analyzer.
Here the display system using the hour meter and tilt lever is described.
(1) Open the diag memory menu from the main menu (Refer to 8FG Repair Manual).
(2) With each press and release of the knob switch, the respective error code and time of occurrence are
alternately displayed at 2 second intervals.
Note:
• The maximum number of error codes that can be in the memory is 10, and the smaller diag number
represents a newer error.
• An error code appearing just when the key is turned ON may have its stored time such as 0.0.
(3) Connect the matching connector and turn the key switch to OFF.
Error code display
An orange colored lamp lights
(Engine ECU only)
Lamp blinks
Knob switch
Diagnosis memory menu
Press the knob switch to return it.
Switches automatically
every 2 seconds
03.book 5 ページ ２００７年２月２２日 木曜日 午後４時４７分
LPG Device for 4Y-E Engine
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