Honda S2000 Service Manual page 323

1 5 .
14. Check for continuity between body ground and
ECM connector terminal 427.
ECM CONNECTOR A (32P)
W i r e s i d e o f f e m a l e t e r m i n a l s
ls therc continuity?
YES Repair short in the wire between ECM {A27)
and the Ay'C pressure switch.I
NO Substitute a known-good ECM and recheck
( s e e p a g e ' 1 1 - 5 ) , l f v o l t a g e i s n o w n o r m a l , r e p l a c e
the original ECM. lf not, check the A,/C system for
other symptoms.l
Momentarily connect main under-hood fuse/relay
box l6P connector terminal No. 1 1 to body ground
w i t h a j u m p e r w i r e s e v e r a l t i m e s .
NOTE: The main under-hood fuse/relay box 14P
connector is on the bottom of the fuse box. When
you unbolt and invert the fuse box, leave the upper
cover on it to prevent short circuits.
MAIN UNDER.HOOD FUSE/RELAY BOX
CONNECTOR
D (15P)
1 3
4
,/ 1,/
1
9
l l
12
l 4
ACC (RED)
JUMPER WIRE
W i r e s i d e o f f e m a l e t e r m i n a l s
ls therc a clicking noise f rom the A/ C compressor
clutch?
YES Repair open in the wire between the ECM
( A 1 7 ) a n d t h e A , / C c l u t c h r e l a y . t
NO Check the Ay'C system for other symptoms. I
l
2 3 6
I
l 0
12
1 5 1 7
1 8 19 20 21
24
25 26 21
2A 29
30
32
ACS (BLU/REDI
f)
'16.
Measure voltage between ECM connector
t e r m i n a l s A 2 7 a n d 8 2 0 .
ECM CONNECTORS
ls there less than 1.0 V ?
YES Substitute a known-good ECM and recheck
(see page 1 1-5). lf the symptom/indication goes
away, replace the original ECM. lf not, inspect the
Ay'C system (see page 21-8). t
NO Repair open in the wire between the ECI\4
(A 27) and the Ay'C pressure switch, or between the
Ay'C pressure switch and the heater control panel.l
A (32P)
Wire side of lemale terminals
1 1 - 9 5