12- 30 Service Manual LWE130 © BT Europe AB
Electrical system – 5000
Diagnostic and troubleshooting
T-code Valid from serial number Date Order number
675 914369- 2005-09-23 226057-040
12.9 Diagnostic and troubleshooting
12.9.1 General
The truck’s electronic control system incorporates built-in error code
display and logging. This capability works as a powerful complement in
assessing the cause of eventual truck malfunctions. Error conditions
encountered by the transistor regulator are displayed as a sequence of
flashes of the status LED (
Fig. 10 AL). The sequence always starts with
a number of “long” flashes followed by a number of “short” flashes. See
Table 11 on page 32.
The 5 most recent error codes will be stored in a log along with the hour
meter reading, number of occurrences and transistor regulator temper
-
ature when the error occurred.
The first time an error code is generated it is advisable to check if the
condition persists by switching the truck off completely, then switching
back on again. Check to see if the error code is displayed again.
Use the hand terminal’s TESTER function to test basic truck character-
istics.
12.9.2 Display of error codes
Direct display of error codes
To check for an eventual error condition by directly inspecting the status
LED carry out the following:
• Fold out the main electrical panel. See section “12.4 Accessing main
electrical panel” .
Under normal conditions the Status LED is off, otherwise an error con-
dition exists.
• Count the number of “long” (and “short”) flashes in the sequence to
determine the error code.
• Refer to Table 11, “List of error codes,” on page 32.
Hand terminal display of error codes
To check an existing error condition or to consult the error history using
the hand terminal carry out the following:
• Ensure the key switch is off [S17].
• Fold out the main electrical panel. See section “12.4 Accessing main
electrical panel” .
• Connect the hand terminal’s connector (Fig. 14 A) to the transistor
regulator’s diagnostic connector (Fig. 10 B).
• Turn on the key switch [S17].
If an error condition is present on the truck it will be immediately dis-
played.
*ALARM*
INCORRECT START
Fig. 16 Typical error display
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