JAC Trucks. Service manual - part 5

When there is any problem about 'ASR" system ,"ABS" lamp is illuminated.
During normal driving, 'ASR' lamp is off.
When 'ASR' works, 'AS R' lamp comes to blink.
NOTE:
"ASR" lamp is amber-colored and "ABS" lamp is red-colored. Amber means INDICATION and red means WARNING.

CAB TILTING LIGHT

The cab tilting light will be illuminated when main
hook didn't fix for cab locking.

DOOR AJAR WARNING LIGHT

The door ajar warning light warns you that a door is not completely closed.
NOTE:

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Close the door completely.

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Before driving, check that the warning light has gone out.

CHARGE WARNING LIGHT

The charge warning light should come on when the ignition key is turned on, then go out when the engine is running. If
the light comes on while you are driving, stop and turn off the engine and check the tension of the belt. If the belt is
loose or fraying, adjust or replace the belt.

JAKE BRAKE OPERATION INDICATOR(If installed)

Jake brake is a kind of the engine brake. When it works, the lamp illuminates but, in case of the vehicle equipped with

Turn the switch off after finishing the work or during driving normally.

LOW LIGHT (ONLY TRACTOR, PULLCARGO, 8x4 VEHICLE)

The low light will be illuminated when it is in 'LOW' position in 2nd transmission.

HIGH LIGHT (ONLY TRACTOR,PULL CARGO, 8x4 VEHICLE)

The high light will be illuminated when it is in 'HIGH' position in 2nd transmission.

EXHAUST BRAKE WARNING LIGHT

The exhaust brake warning light will be illuminated if the exhaust brake switch is on. Put the exhaust brake switch back
in its place where it was and this light goes out.

RAILER BRAKE LIGHT (ONLYTRACTOR, PULL CARGO)

The trailer brake light comes on when the trailer brake switch is applied.

ABS WARNING LIGHT

When the key is turned to 'ON', ABS warning light will be on and then off in a few seconds.
If ABS warning light remains on while driving, or remains off when the key is turned to "ON", there may be a problem
about ABS.
In this case, you should show an authorized JAC dealer your vehicle and check it as soon as possible.
Though there is a problem about the vehicle, the normal brake system will still operate except ABS.

ANTI-SLIP REGULATOR

When the key is turned to 'ON" position 'ASR" lamp will be illuminated.
If the brake is engaged, 'ASR" lamp goes out. But if it doesn't go out, "ASR" doesn't work.

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JAC HEAVY DUTY TRUCK

INDICATOR LIGHTS INSPECTION KNOB
To confirm a short of the bulb, press the knob.
In case of a short of the bulb, the bulb should be exchanged as soon as pos鄄
sible.

TRUN SIGNAL SWITCH

Pulling the lever back (away from you) causes the turn signals the left side of

the vehicle to blink. Pushing the lever forward (toward you) causes the turn
signals on the right side of the vehicle to blink. As the turn is completed, the
lever will automatically return to the center position and turn off the turn signals
at the same time. If either turn signal indicator light blinks more rapidly than
usual, goes on but does not blink, or does not go on at ail, there is a malfunc鄄
tion in the system. Check for a burned-out fuse or bulb or you're your autho鄄
rized JAC dealer.

the exhaust brake or retarder, it doesn't illuminate.

BRAKE WARNING LIGHT

The brake warning light will be illuminated when oil leaks from the brake system or the brake performance dropped due
to wearing brake shoe.
If possible, stop immediately and contact your authorized dealer.

AIR PRESSURE WARNING LIGHT

When the air pressure in the air reservoir dropped
(below 4.8-5.2 kg/cm

) and the engine is on the air pressure warning light comes on and the buzzer sounds at the

same time. Then stop driving your vehicle immediately and run the engine at idle. Wait until the air pressure gets back
and this warning light will go out.
CAUTION:
If the vehicle is driven in condition that air pressure warning light comes on, this is very dangerous. If a pressure rising
time has a long interval, have the air system checked and repaired by an authorized dealer.

CHECK ENGINE WARNING LIGHT (If installed)

If the main key switch is turned on in normal condition, 'CHECK ENGINE' lamp will illuminate and then extinguish after
two seconds. If it illuminates continuously, you can suspect any problem in it so have to check or repair in the authorized
JAC dealer.

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JAC HEAVY DUTY TRUCK

PASSING SWITCH
The headlights will be flashed when the lever is pushed upward and release
automatically. The headlights can be flashed even though the headlight switch
is in the "OFF' position.

WINDSHIELD WIPER
The windshield wiper switch has three positions:
INT: Intermittent wiper operation
LO : Low-speed operation
HI : High-speed operation
NOTE:
To prevent damage to the wiper system, do not attempt to wipe away heavy
accumulations of snow or ice.
Accumulated snow and ice should be removed manually, If there is only a light
layer of snow or ice, operate the heater in the defrost mode to melt the snow or
ice before using the wiper.

HEADLIGHT SWITCH
To operate the headlights, turn the barrel on the end of the multifunction
switch. The first position turns on the parking lights, sidelights, taillights and
instrument panel lights. The second position turns on the headlights.

High-beam and Low-beam
To turn on the headlight high beams, push the lever upward. For low beams,
pull the lever down. The appropriate headlight beam indicator light will come
on at the same time.
NOTE:
This function is operated when the headlight switch is in the "ON" position.

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JAC HEAVY DUTY TRUCK

EXHAUST BRAKE SWITCH
To use the exhaust brake, put the "ON' position. The exhaust brake operates
when you remove your foot from the accelerator pedal and the clutch pedal.
The exhaust brake will not operate automatically if you operate the accelerator
pedal or the clutch pedal.
Use exhaust brake when going down a slope.

HAZARD WARNING
The hazard warning lamp should be used whenever you find it necessary to
stop the car in a hazardous location. When you must make such an emergen鄄
cy stop, always pull off the road as far as possible.
The hazard warning lights are turned on by pushing in on the hazard switch .
This causes all turn signal lights to blink. The hazard warning lights will oper鄄
ate even though the key is not in the ignition.
To turn the hazard warning lights off, push in on the switch a second time.

WINDSHIELD WASHER OPERATION
To use the windshield washer, press in on the button on the end of the wiper/
washer lever. When the washer button is pressed, the wipers automatically
make two passes across the windshield, And the windshield wiper is operated
2 to 3 times at the same time, The washer continues to operate as long as the
button is depressed.

CAUTION:

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Do not use the wiper when the windshield is dry.

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The washer button should not be pressed if the washer reservoir is empty.

This can damage the washer fluid pump. Do not operate the washer for more
than 15 seconds at a time.

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