
55
MicroController Control System
Troubleshooting
PROBLEM 2
CVMS does not work at all, lift truck operation normal.
If only part of CVMS works.
POSSIBLE CAUSE
Open circuit from PB-6 to CVMS connector PIN 1;
Open circuit from PB-5 to CVMS connector PIN 5;
CVMS defect.
Connect multimeter positive lead to PB-6
and negative lead to PB-5.
Measure the voltage.
12 volts
0 volts
Connect CVMS connector.
Replace the CVMS module.
CHECKS
Make sure CVMS connector is connected to CVMS.
If connected
If not connected
Repair or replace open circuit between 5 wires
from controller to CVMS.
Содержание B20S-3
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