Charging Circuit Troubleshooting; Charging System Indicator Test - Honda S2000 Service Manual

Gharging System
Charging Circuit Troubleshooting
lf the charging system indicator does not come on or
does not go off, or the battery is dead or low, test the
following items in the order listed below:
Battery (see page 22-39)
Charging system indicator
A l t e r n a t o r a n d r e g u l a t o r c i r c u i t
Alternator control system
Charging System Indicator Test
1 . T u r n t h e i g n i t i o n s w i t c h O N ( l l ) .
Does the charging system indicator come on?
YES Go to step 2.
NO Go to step 6.
S t a n t h e e n g i n e .
Does the charging system indicatot go otf?
YES Charging system indicator circuit is OK. Go
to the Alternator and Regulator Circuit Test. I
NO Go to step 3.
Turn the ignition switch OFF.
Disconnect the alternator 4P connector from the
alternator.
T u r n t h e i g n i t i o n s w i t c h O N ( l l ) .
Does the charging system indicator come on?
YES Turn the ignition switch OFF, and repajr the
short in the WHT/BLU wire. lf the WHT/BLU wire is
shorted to ground, the voltage regulator in the
alternator may be damagedl
NO Go to step 9.
Turn the ignition switch OFF.
Disconnect the alternator 4P connector from the
alternator.
2.
5 .
3 .
4 .
6 .
7 .
4-22
8. Connect the alternator 4P connector terminal No. 3
t o b o d y g r o u n d w i t h a j u m p e r w i r e . T u r n t h e
i g n i t i o n s w i t c h O N ( l l ) .
AITERNATOR 4P CONNECTOR
l
2
3
4
L (WHT
f e m a l e t e r m i n a l s
/BLU)
9 .
Does the charging system indicator come on?
YES Go to step 9.
NO Turn the ignition swltch OFF. Check for a
b l o w n N o . 6 ( 1 5 A ) f u s e a n d a b l o w n c h a r g i n g
s y s t e m l i g h t b u l b . l f t h e f u s e a n d b u l b a r e O K ,
repair the open in the BLKI/EL or WHT/BLU
w i r e t o t h e i n d i c a t o r b u l b . l
Measu re the voltage at the No.
'l
terminal of the
alternator 4P connector with the ignition switch ON
0 r ) .
ALTEBNATOR 4P CONNECTOR
f e m a l e t e r m i n a l s
ls there battery voltage?
YES Go to Alternator and Regulator Circuit Test.
I
NO Repair open in the BLK/YEL wire between the
a l t e r n a t o r a n d t h e d r i v e r ' s u n d e r - d a s h f u s e r e l a y
box. t