TROUBLESHOOTING PROCEDURES
This section describes the general process of identifi-
cation, location, structure, and performance of the
troubleshooting procedures that are included in this
manual.
Troubleshooting Procedures, Identification
The various procedures are identified by the fault
characteristic.
Troubleshooting Procedures, Location
Once a DTC number has been displayed, indicating a
fault has been detected, the operator/service techni-
cian can review the DTC chart in this section to deter-
mine where the appropriate troubleshooting proce-
dure is located.
The reported DTCs are listed in numerical order,
along with the DTC title description of the detected
fault. DTCs are also stored in the Fault Logs, where a
history of repeat failures is maintained, until cleared
by an authorized service technician.
When working from an Integrated Electronic Techni-
cal Manual (IETM) format, clicking on the DTC index
number, or the page in the Table of Contents, will link
you to the applicable procedure in section 9030-20. If
working from a hardcopy (paper) manual, this capabil-
ity is not available.
NOTE:
Access to the following Fault Log menus re-
quires Service password.
NOTE:
The only Fault Logs available for display are
those for the controllers installed in your lift truck, as
defined in the VSM's Configuration Data File (CDF)
Access to Fault History Codes — Fault Logs store a
history of DTCs within a specific controller file. These
fault logs are accessible through the Display Panel
main menu. At the Display Panel menu enter the su-
pervisor password, scroll to Diagnostics,
ENTER
, and
scroll to appropriate fault log. See Display Menu Flow-
chart.
Troubleshooting Procedures, Structure
The structure or makeup of the troubleshooting proce-
dures is generally the same for all entries. The proce-
dures are graphical in nature with some text explana-
tion below the relevant graphic. In the text explanation
symbols are used wherever possible. See Icon Glos-
sary for definitions.
Minor differences in the beginning of a procedure are
determined by whether the procedure has:
•
A single fault code with a single schematic dia-
gram
•
A single fault code with multiple schematic dia-
grams
In this instance, the technician will have to se-
lect the appropriate schematic based on the
DTC and the lift truck type/configuration.
•
Multiple fault codes with a single or multiple
schematic diagram(s)
•
A single fault code with no schematic dia-
grams, used when only the operational check
and replacement procedures are employed in
the procedure.
Troubleshooting procedures include several ele-
ments.
•
DTC
number(s) which this procedure applies
to.
•
DTC
Identification e.g. Seat Sensor.
•
CHECK
List - Determines if the Fault is still ac-
tive and helps identify the Possible Cause.
•
POSSIBLE CAUSES
•
MAIN SCHEMATIC
•
OPERATIONAL CHECKS
NOTE:
If key icon remains illuminated after software
is installed, shut key
OFF
. Wait 30 seconds for power
cycling then turn key
ON
. Key icon should not stay lit.
•
Verify the DTC is still a valid fault. If the DTC is
cleared during the power cycling, it may not
have been a hard failure and if it does not reoc-
cur on the display, there is no method of identi-
fying or troubleshooting the problem.
If this situation occurs randomly or reoccurs
frequently with the same DTC, access and re-
view the fault history log for that group to deter-
mine the frequency of failure and the last re-
ported time it occurred. This information can be
helpful in isolating intermittent problems when
known conditions under which it occurred can
be repeated.
General Maintenance and Diagnostic Data
Electrical System
Check the Service Manual section in Hypass Online for possible updates and check pertinent Grams
9030-03-4
Confidential/Proprietary - Do Not Copy or Duplicate
Summary of Contents for A099
Page 1: ...Hyster A276 J45XN J50XN J60XN J70XN Forklift...
Page 14: ...9010 2...
Page 28: ...NOTES 9010 05 14...
Page 30: ...9025 2...