JLG 534D-10 - Manual (Page 164)

Electrical System
9.16 534D-9, 534D-10 & 544D
If all wires do not show proper continuity, replace the
ignition switch.
d. Ignition Switch Installation
1. Connect the ignition key switch to the cab harness
connectors.
2. Reach up and under the dash to work the ignition
switch into the ignition switch-mounting hole on the
lower right side of the dash.
3. Align the ignition switch so that when it is in the OFF
position, the key slot is positioned vertically (straight up
and down). Install the hex nut securing the ignition
switch to the dash. DO NOT overtighten.
4. Install the lower access panel.
5. Connect the battery negative (-) cable at the negative
battery (-) terminal.
Note: If further information is needed, refer to Section
9.5, “Electrical System Schematics.”
9.12.2 Dash Switches
a. Switch Removal
1. Remove the battery negative (-) cable at the negative
battery (-) terminal.
2. There are three standard switches in the gauge
panel (park brake, 4x4/4x2 and shutdown override).
The machine could be equipped with one or more of
these optional switches (heater on/off, beacon, work
lights, and wiper/washer switch).
John Deere
Cummins
3. Pull the panel out of the dash, disconnect the
harness connector to the switch in question and
remove the switch out of the panel.
b. Disassembly
DO NOT disassemble the dash switch. Replace a
defective switch with a new part.
c. Inspection and Replacement
Inspect the switch terminals for continuity and shorting in
both the engaged and disengaged positions. Replace a
defective or faulty switch with a new switch.
d. Switch Installation
1. Connect the switch to the cab harness connector.
2. Position the switch into the rectangular switch bezel
and snap into position.
Switch Position
Test from Red (Battery)
wire to:
OFF RUN START
Orange/Gray Wire
Orange/Dark Green Wire
X X
Violet/Brown Wire X
MX1200
BEACON
ON
OFF
LIGHTS
ON
OFF
LOW
HIGH
HEATER
PARK
BRAKE
CHECK
ENGINE
SHUTDWN
OVERRIDE
WIPER
WASHER
1/10
240
100
F
E
100
0
16
10
TEMP
FUEL OIL
VOLTS
- +
DRIVE
ALT
4X4
4X2
ON
OFF
1/10
240
100
F
E
100
0
16
10
TEMP
FUEL OIL
VOLTS
- +
DRIVE
ALT
4X4
4X2
ON
OFF
PARK
BRAKE
WAIT-TO-START LIGHT DIAG.LIGHT
ENG.
SHUTDOWN LIGHT
MX1240