Headlamps; Underhood Lamp - Jeep 1987 Wrangler Workshop Manual

HEADLAMPS
1. FUSE LINK: Dash panel connector & splice A
T E S T O K
N O T O K
FUSE
Check operation of stop Stop lamps on Repair open from fuse link J/2.5L, A/4.2L
PANEL
lamps
2. HEADLAMP SWITCH: Headlamp switch ON
TEST OK NOT OK
Terminal C 12 volts Repair open from splice A
Terminal D 12 volts Replace headlamp switch
3. DIMMER SWITCH: Headlamp switch ON
T E S T
OK
N O T O K
Terminal 2 12 volts Repair open from headlamp switch
Terminal 1 12 volts (lo beam)
Replace dimmer switch
Terminal 3 12 volts (hi beam)
Replace dimmer switch
4. HEADLAMPS: Headlamp switch ON
T E S T
OK
N O T O K
Terminal C 12 volts (lo beam)
Repair open in wiring from dimmer switch
Terminal B 12 volts (hi beam)
Repair open in wiring from dimmer switch
Terminal A 0 volts Repair open to ground G305
HAZARD/
l i =
1. FUSE
UNDERHOOD LAMP
DESCRIPTION
1 H A Z A R D
18 P N K W/ T R
18 P N K
W/ T R
E5
16 P N K
W/ T R
The underhood lamp circuit begins at the hazard flasher
battery terminal and extends into the engine compartment
through the dash panel connector. At approximately the
center of the dash panel, the wire extends from the wiring
harness and joins the lamp connector.
The metallic lamp body serves as the ground connection
and contains a mercury switch. When the hood is up, the
mercury flows to the back of the lamp housing where it
connects the battery supply terminal to the bulb filament.
C100
fT\ U N D E F U N D E R H O O D
TROUBLESHOOTING
T E S T O K
NOT OK
Check operation of hazard lamps Hazard lamps on
Refer to hazard lamp
troubleshooting charts
2. LAMP
TEST
O K N O T O K
Install replacement bulb Lamp on Next step
Underhood lamp housing to clean chassis
ground
Zero ohms Clean ground connection
Jumper from battery positive terminal to
underhood lamp terminal
Lamp on Replace lamp housing
3. BATTERY FEED
TEST OK NOT OK
Underhood lamp terminal 12 volts
Repair open from hazard
flasher
48
Headlamps
48 Underhood Lamp