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3. Make these input test at the connecror.
. l f a n y t e s t i n d i c a t e s a p r o b l e m , f i n d a n d c o r r e c t t h e c a u s e , t h e n r e c h e c k t h e s y s t e m ,
. lf all the input tests prove OK,thecontrol unit must befaulty;
reprace rr.
Cavity
Wire
Test condition
Test: Desired result
Possible cause if result is not obtained
2
RED/BLU
U n d e r . a l l
c o n d t t t o n s
Check for voltage to ground:
There should be battery voltage.
Blown No.54 (30 A) fuse in the
under-hood fuse/relay box
Blown No. 27 (10 A) fuse in the
under-dash fuse/relay box
An open in the wire
12
Y E U B L K
lgnition switch ON
flr)
Check for voltage to ground:
There should be battery voltage.
. Blown No. 19 (7.5 A) fuse in the
under-dash fuse/relay box
. F a u l t y l G 2 r e l a y
. A n ^ n a h
i n t h a \ ^ , i r 6
4
BLK
U n d e r a l l
conditions
Check for continuity to ground:
There should be continuitv.
. Poor ground (G402)
. An open in the wire
7
BLK
U n d e r a l l
c o n d i t i o n s
Check for continuity to ground:
There should be continuitv.
. P o o r g r o u n d ( c 4 0 2 )
. An open in the wire
3
RED/YEL
C o m b i n a t i o n l i g h t
switch ON (=D)
Check for voltage to ground;
There should be battery voltage.
B l o w n N o . 4 5 ( 2 0 A ) f u s e i n t h e
under-hood fuse/relay box
F a u l t y h e a d l i g h t r e l a y 2
Faulty combination light switch
An open in the wire
5
REDA/VHT
C o m b i n a t i o n l i g h t
switch ON (3D)
Check for voltage to ground:
There should be baftery voltage.
Elown No. 43 (20 A) fuse in the
under-hood fuse/relay box
Faulty headlight relay 1
Faulty combination light switch
An open in the wire
1
REDANHT
Combination light
switch ON (=D),
a n d d i m m e r s w i t c h
i n H I G H
Connect a jumper wire between
N o . 3 a n d N o . 1 t e r m i n a l s .
L e f t h e a d l i g h t ( H l c H ) a n d h i g h
beam indicator light should
come on.
j . B l o w n b u l b
I . Faulty high beam cut relay
. Faulty combination light switch
. P o o r g r o u n d ( G 4 0 1 )
. An open in the wire
1 1
RED/ORN
C o m b i n a t i o n l i g h t
switch ON (=D),
and dimmer switch
i n H I G H
Connect a jumper wire between
N o . 5 a n d N o . 1 1 t e r m i n a l s .
R i g h t h e a d t i g h t ( H I G H ) s h o u l d
c o m e o n .
Blown bulb
Faulty high beam cut relay
Faulty combination light switch
P o o r g r o u n d ( G 4 0 1 )
An open in the wire
1 0
RED/BLU
C o m b i n a t i o n l i g h t
switch ON {=D},
a n d d i m m e r s w i t c h
i n H I G H
Check for continuity to ground:
There should be continuity.
. Faulty high beam cut relay
. Faulty combination light switch
. P o o r g r o u n d ( c 4 0 1 )
- An open in the wire
6
G R NA/VHT
Parking brake lever
u p
Check for continuity to ground:
T h e r e s h o u l d h e c . j n t i n r r i i w
Faulty parking brake switch
A h
^ n 6 h
i ^ + l ' -
. ^ , i . ^
I
B L U / R E D
U n d e r a l l
c o n d i t i o n s
Check for voltage to ground:
There should be batterv voltaoe.
Faulty headlight relays
A n o p e n i n t h e w i r e
9
BLU/'|/HT
lgnition switch ON
{ | | )
Blown buib
An open in the wire
Blown bulb
-
A n o p e n i n t h e w i r e
1 Attach to ground;
T h e D R L i n d i c a t o r l i g h t s h o u l d
come on.
Attach to ground:
The brake system light should
c o m e o n .
G R N / R E D
l g n i t i o n s w i t c h O N
flr)
22-67
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Table of Contents
Troubleshooting
