Lamps; Exterior Lamps; Headlamp Diagnosis - Dodge D150 1990 Service Manual

LAMPS 8L - 1
LAMPS
C O N T E N T S
Page
EXTERIOR LAMPS
EXTERIOR LAMPS SERVICE PROCEDURES
1
3
Page
INTERIOR LAMPS 10
SPECIFICATIONS 11
E X T E R I O R LAMPS
INDEX
Diagnostic Procedures
Page
. . . 1 General Information
Page
. . . 1
GENERAL INFORMATION
Each vehicle is equipped w i t h various l a m p assem-
blies w h i c h a r e
used for i l l u m i n a t i n g and/or i n d i c a t i n g purposes. A
good ground is m a n d a t o r y for proper l i g h t i n g circuit
operation. C i r c u i t g r o u n d i n g is provided by the lamp
socket w h e n i t comes i n contact w i t h the m e t a l body,
or t h r o u g h a separate g r o u n d w i r e l i n k i n g the lamp
socket to t h e body on plastic l a m p assemblies.
W h e n changing l a m p bulbs, check the socket for
corrosion. I f corrosion is present, clean i t w i t h a w i r e
b r u s h and coat t h e inside o f the socket l i g h t l y w i t h
any good m u l t i p u r p o s e grease or petroleum j e l l y .
B u l b i d e n t i f i c a t i o n a n d application for exterior and
interior lamps can be found i n Specifications.
DIAGNOSTIC PROCEDURES
Always b e g i n any electrical system failure diagno-
sis by t e s t i n g a l l o f the related fuses a n d circuit
breakers i n t h e fuse block and engine compartment
(see Group 8 W - W i r i n g Diagrams).
Conventional and halogen headlamp sealed beam
u n i t s are physically and electrically interchangeable,
b u t i t is recommended t h a t they not be i n t e r m i x e d
on a given vehicle.
HEADLAMPS M M
ENGINE IDLING
OR IGNITION OFF
TEST CHARGING
SYSTEM
HEADLAMP DIAGNOSIS
i
SEALED REAM
OR BULB BURNS
OUT FREQUENTLY
TEST CHARGING
SYSTEM
HEADLAMPS DIM
ENGINE RUNNING
ABOVE IDLE
][
TEST CHARGING
SYSTEM
HEADLAMPS
RANDOM FLASH
[
HEADLAMPS
WILL NOT LIGHT
POORLY GROUNDED
HEADLAMP
CIRCUIT
LOOSE CONNECTION
IN HEADLAMP
CIRCUIT
HIGH RESISTANCE
IN HEADLAMP
CIRCUIT
LOOSE CONNECTION
IN HEADLAMP
CIRCUIT
HIGH RESISTANCE
IN HEADLAMP
CIRCUIT
LOOSE CONNECTION
IN HEADLAMP
CIRCUIT
OPEN OR CORRODED
CONTACT IN
HEADLAMP SWITCH
CRACKED LENS ON
HALOGEN SEALED
BEAM ONLY
FAULTY SEALED
BEAMS OR BULBS
OPEN OR CORRODED
CONTACT IN DIMMER
SWITCH
FAULTY SEALED
BEAMS OR BULBS
FAULTY SEALED
BEAMS OR BULBS
RR8LD21