Acura 2002 RSX Service Manual page 72

Ahernator Control System Test (K20A2
engine)
1. Check for proper operation of the ELD by checking
t h e M I L ( s e e p a g e 1 1 - 3 ) .
2. Disconnect the starter subharness 6P connector'
3 . S t a r t t h e e n g i n e , a n d t u r n t h e h e a d l i g h t s ( h i g h
b e a m ) O N .
4. Measure voltage between the starter subnarness
6P connector terminal No. 2 and the positive
terminal of the battery
C IWHT/GRN)
STARTER SUB.HARNESS 6P CONNECTOR
Wire side of temale terminals
ls there 1 V or less?
YES - Go to step 8.
NO-Go to step 5.
5. Turn the headlights and ignition switch OFF'
6. Disconnect ECM.onngglsr B (24P).
7. Check for continuity between ECM connector
terminal 818 and body ground.
€CM CONNECTOR B {2,rP)
I
?
3 1 4 l 5
U
6 7
8 9 10
3
t c
17 1 8
/ t n
21
ACGC {WHT/GRN}
Wire side of female terminals
ls there continuitY?
YES Repair a short in the wire between the
alternator and ECM.I
NO-Substitute a known-good ECM, and recheck
( s e e p a g e 1 1 - 6 ) .
lf prescribed voltage is now available, replace the
o r i g i n a l E C M . I
8. Turn the headlights and ignition switch OFF.
9. Disconnect ECM "onngglel B {24P).
10. Check for continuity between ECM connector
terminal 818 and starter subharness 6P connector
terminal No. 2.
ECM
124Pl
l
2 l 3 1 4 l 5 U 6
1
8 9
1ol./
3 t /
5
1 l 8
, / n
zl./
C {WHT/GRN}
2 l 3
4
s l./
STARTER SUA-HARNESS 6P CONNECTOR
W i r e s i d e o f f e m a l e l e r m i n a l s
Is there continuitY?
YES Repair the alternator (see page 4-411 1
NO - Repair an open in the wire bet\,/veen
the
alternator and ECM.I
ACGC IWHT/GRN}
4-31