EP Equipment EPT20-15ET, Руководство по обслуживанию

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REV. 09/2016
ELECTRICAL SYSYTEM
8
77
8.3 Key Switch
Key switch is used to START / STOP the truck.
8.3.1 Removal and Installation
8.3.2 Faults and Causes
1
Fault
Turn the key switch to “ON”, the
vehicle won’t start
Cause
a. Key switch failure;
b. Key switch circuit not conducted.
2
Fault
Turn the key switch to “OFF”, the
vehicle won’t stop
Cause
a. Key switch failure;
b. Key switch shorted (short circuit)
Checking
-
Check if the appearance of key switch its
wiring harness are in good condition, and if
the connectors are connected securely.
8.3.3 Checking and Testing
Testing
-
-
Check if the key switch circuit is conducted;
Carry out ON/OFF test to the key switch with
a multimeter:
key switch at “OFF” position, open circuit;
place the key switch at “ON” position, the
circuit is conducted.
8.3.4 Control Circuit Troubleshooting
Key Switch Control Circuit
(Figure 30517)
Check if the circuit is broken by using a multi-
meter:
-
-
Set the multimeter to ON-OFF;
Check if #0/#1 circuit is conducted.
-
Remove the upper cover ;(See Sention 4.2)
-
-
Disconnect the key switch connector from
main wiring harness;
Unscrew the nut and remove the key switch
from the mounting plate.
Removal
Installation
-
Install according to the reverse order of rem-
oval.