Ecm Inputs And Outputs At Connector B (25P) - Honda S2000 Service Manual

ECM Inputs and Outputs at Connector B (25P1
Wire side of female terminals
NOTE: Standard battery voltage is 12 V.
Terminsl
numb6r
Wire color Terminal name
Description Signel
1
YEUBLK IGPl (POWER SOURCE)
Power source for ECM control With ignition switch ON (ll): battery voltage
With ionition switch OFFi about 0 V
2 BLK PG1 IPOWER GROUND)
Ground for ECM control Less than 1.0 V atalltimes
3
RED
l N J 2 ( N o . 2 I N J E C T O R )
/es No.2 iniedor
With ignition switch ON lll): banery voltage
With engine running: duty controlled
4
BLU
l N J 3 ( N o . 3 I N J E C T O B )
r'es No,3 iniector,
5
YEL
lNJ4 {No. 4INJECTOB) / e s N o . 4 i n i e c t o r ,
9
YEUBLK
IGP2 (POWER SOURCE)
Power source for ECM control
circuit
With ignition switch ON (ll): banery voltage
Wirh idnirion swirch OFF: abort 0 V
1 0 BLK
PG2 (POWER GROUND)
Ground tor EClvt control
circuit.
L e s s t h a n 1 . 0 V a t a l l t i m e s
1
BRN
l N J l ( N o . 1 I N J E C T O R )
D r i v e s N o . 1 i n l e c t o r .
With ignition switch ON (ll): battery voltage
W i t h e n o i n e r u n n i n o : d u w c o n t r o l l e d
'12
G RN/YEL VTS (WEC SOLENOID
D r i v e s V T E C s o l e n o i d v a l v e .
With engine at low rpm: abolt 0 V
Wiih endine at hioh rom: batterv voltaoe
20
BBN/YEL
LG1 (LOGIC GROUND)
Ground tor ECIM control
Less than 1.0 V at all times
21 WHT/RED VBU IVOLTAGE EACK UP)
Power source for ECM control
crrcurt,
r o w e r s o u t c e l o r u t L
Battery vokage at all times
22 BB NI/EL
LG2 (LOGIC GROUNDi
Ground Ior ECM control
ctrcutt,
L e s s t h a n 1 . 0 V a t a l l t i m e s
23
BLIVRED IACV (IDLE AIF CONTROL
VALVE}
D r i v e s I A C v a l v e .
W i t h e n g i n e r u n n i n g : d u t y c o n l r o l l e d