JLG Skytrak 6036 Service Manual page 259

Trouble
Horn doesn't
sound when horn
button is pressed.
Horn sounds
continuously
without horn
button pressed.
Warning Devices—BACKUP ALARM AND REVERSE SWITCH
Backup alarm
doesn't sound
with travel select
lever in REVERSE.
Backup alarm
sounds with travel
select lever in
NEUTRAL AND
FORWARD.
Park lock warning
bulb doesn't light
when park lock
brake switch is UP
(engaged).
Model 6036 S/N 9B0499 and Before
Probable Cause
Warning Devices—HORN
1. No voltage at horn (7, Fig.
10.5); broken wire or circuit
breaker (11) doesn't reset.
2. Corroded electrical ground
at horn mounting.
3. Loose or broken wiring.
4. Defective horn switch (49,
Fig. 10.5).
5. Defective horn (7, Fig.
10.5).
1. Defective horn switch (49,
Fig 10.5).
2. Short circuit in wiring.
1. No voltage at backup
alarm (16) Fig. 10.5);
broken wire or circuit
breaker (11) doesn't reset.
2. Defective reverse switch
(53, Fig. 10.5).
1. Short circuit in wiring.
2. Defective reverse switch
(53, Fig. 10.5).
Warning Devices—PARK LOCK WARNING LIGHT
1. Park lock warning bulb (45,
Fig 10.5) is burned out.
2. Loose or broken wiring.
3. Defective park lock brake
switch (46, Fig. 10.5).
Remedy
Replace wiring and circuit
breaker as required.
Repair electrical ground.
Repair or replace wiring.
Test horn switch for continuity
with horn button pressed;
replace switch if open.
Remove horn from forklift and
test horn using short heavy
gauge wires connected to a
fused or protected 6 A
minimum output, 12 Vdc
power supply.
Test horn switch for continuity
without horn button pressed;
replace switch if closed.
Determine and repair cause of
short circuit.
Replace wiring and circuit
breaker as required.
Replace reverse switch.
Determine and repair cause of
short circuit.
Test and replace reverse
switch as required
Replace park lock warning
bulb.
Repair or replace wiring.
Test park lock brake switch
for continuity and replace
switch if open in the engaged
position.
Section 10. Electrical System
Reference
See para. 10.2.1
See para. 10.2.1
See para. 10.2.1
See para. 10.2.1
See para. 10.2.1
See para. 10.2.1
See para. 10.2.1
See para. 10.2.2
and 10.4
See para. 10.2.2
See para. 10.3
See para. 10.7.6
See para. 10.7.4
See para. 10.7.4
See para. 10.7.4
10-65