Specifications

TROUBLE-SHOOTING INSTRUCTIONS

Trouble-shooting the EV100/200 LX/LXT control should be quick and easy by following the instruc-

tion outlined in the following status code instruction sheets.

If mis-operation of the vehicle occurs, a status code will be displayed on the Dash Display for vehicle

equipped with a Dash Display or by plugging a Handset into logic card's plug "Y" location and then

reading the status code.

With the status code number, follow the procedures outlined in the status code instruction sheets to

determine the problem.

Checking and replacement of components are also outlined in sections of this instruction book. Please

refer to these section as needed.

Important Note: Due to the interaction of the logic card with all vehicle functions, almost any status

code or control fail could be caused by the logic card. After all other status code procedures have

been followed and no problem is found the logic card should then be replaced as the last option to

correct problem.

The same device designations have been maintained on different controls but the wire numbers may

vary. Refer to the elementary and wiring diagrams for your specific control. The wire numbers

shown on the elementary diagram will have identical numbers on the corresponding wiring diagrams

for a specific truck, but these numbers may be different from the numbers referenced in this publica-

tion.

WARNING: Before trouble-shooting, jack up wheels, disconnect the battery and

discharge capacitor 1C. Reconnect the battery as needed for the specific check.

If capacitor 1C terminals are not accessible, discharge capacitor by connecting from SCR POS termi-

nal to 2 REC anode. Check resistance on Rx1000 scale from frame to SCR power and control

terminals. A resistance of less than 20,000 ohms can cause misleading symptoms. Resistance less

than 1000 ohms should be corrected first.

Before proceeding, visually check for loose wiring, maladjusted linkage to the accelerator switch,

signs of overheating of components, etc.

Tools and test equipment required are: (a) 6-volt lamp, 6-volt battery, two A14 diodes (1 Amp

400V), clip leads, volt-ohm meter (20,000 ohms per volt) and general hand tools.