EP Equipment CQD16, Service Manual

Page: 135 / 251

REV. 07/2016
ELECTRICAL SYSYTEM
8
121
8.9 Warning Light / Headlight
This truck is installed with one warning light and
two headlights on overhead guard.
See Section 3.1
8.9.2 Faults and Causes
1
Fault
Turn on the warning light/headlight
switch, the warning light/headlights
won't light up
Cause
a. Warning light / headlight failure;
b. Warning light / headlight circuit
not conducted.
8.9.1 Removal and Installation
Removal
-
-
Disconnect warning light/headlight connect-
ors;
Remove the warning light/headlights from the
overhead guard.
Installation
- Install according to the reverse order of rem-
oval.
Checking
- Check if the appearance of warning light
/ headlight and its wiring harness are in
good condition, and if the connectors are
connected securely.
8.9.3 Checking and Testing
-
-
Check if warning light / headlight circuit is
conducted;
Energize the warning light / headlights with a
voltage of 12V:
If the light is on, then it is normal;
if the light is not lit, then the light is faulty.
Testing
Warning Light
Headlight
8.9.4 Control Circuit Troubleshooting
Light Control Circuit (Figure 90522)
Check if the circuit is broken by using a multi-
meter:
-
-
-
Set the multimeter to ON-OFF;
Check if #94/#96 circuit (circuit where
warning light locates) is conducted.
Check if #94/#95 circuit (circuit where
headlight locates) is conducted.