EP Equipment CQD16, Service Manual

Page: 82 / 251

68
REV. 07/2016
OPERATING SYSTEM
6
6.9 Rocker Switch
The rocker switch of this truck is used to control
the ON/OFF of headlights and warning light.
The rocker switch is classi
fi ed by functions as:
Headlight Switch and Warning Light Switch
6.9.1 Removal and Installation
See Section 6.2 .
6.9.2 Faults and Causes
1
Fault
Operate the rocker switch, but the
vehicle responds with no action
Cause
a. Rocker switch failure;
b. Rocker switch circuit not
conducted.
2
Fault
Rocker switch not operated, the
vehicle responds with action
Cause
a. Rocker switch failure;
b. Rocker switch shorted
(short circuit)
Checking
- Check if the appearance of rocker switch is in
good condition, and if the plug connection is
secure.
6.9.3 Checking and Testing
Testing
-
- Check if the rocker switch circuit is conducted;
Carry out ON/OFF test to press button switch
with a multimeter:
Press button switch at original position, circuit
breakage;
press the button, circuit conducted.
6.9.4 Control Circuit Troubleshooting
Headlight Switch Control Circuit
(Figure 90313)
Check if the circuit is broken by using a multi-
meter:
-
-
-
-
Set the multimeter to ON-OFF;
Check if #93 circuit (circuit between switch
and converter) is conducted;
Check if #96 circuit (circuit between switch
and headlight) is conducted;
Check if #94 circuit (circuit between headlight
and converter) is conducted.
Headlight