Ecm Inputs And Outputs At Connector E (31 Pi - Honda Civic 2002-2003 Service Manual

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ECM Inputs and Outputs at Connector E (31 PI
I
1
2
3 4
/ 6
7
8
9
IMO
SHJ2S LG3
sm
SH02S
MRLY
AFS
IG1
FPR HTC HTCR
l( /
V 1/
14 15
16
/
18
V
20 21
FTP ELD
EPS
ACC 2'Nffi VSV
LD
22
23 24
1/
26
27
/
29 30
31
BKSW K-LiNE SEFMJ NEP
IMO
SCS WEN MIL
CD
Wire side of female terminals
NOTE: Standard battery voltage is 12
v.
Terminal
Wire color
Terminal name
Description
I
Signal
number
20 BLU/RED 2WBS (EVAPORATIVE Drives EVAP bypass With ignition switch ON (II): battery voltage
EMISSION (EVAPI BYPASS
solenoid valve
I
SOLENOID VALVEI
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21
LTGRN/RED VSV (EVAPORATIVE Drives EVAP canister vent
!
With ignition switch ON (II): battery voltage
EMISSION (EVAPI
I
shut valve I
CANISTER VENT SHUT
I
VALVEI
22 WHT/BLK BKSW (BRAKE PEDAL : Detects brake pedal With brake pedal released: about 0 V
POSITION SWITCH I
oosition switch sianal With brake oedal Dressed: battery voltaae
23 LT BLU K-LiNE Sends and receives scan With ignition switch ON (II): pulses or battery
tool sianals voltaoe
24 YEL SEFMJ Communicates with With ignition switch ON (II): about 5 V
multiplex control unit With enqine runninq under load: pulses
26 BLU NEP (ENGINE SPEED
I
PULSEI
Outputs engine speed pulse With engine running: pulses
27 RED/BLU
i
IMOCD (IMMOBILIZER
i
CODE)
Detects immobilizer signal
29 BRN
i
SCS (SERVICE CHECK Detects service check signal
With the service check signal shorted with the PGM
, SIGNAl( Tester: about 0 V
With the service check sianal opened: about 5 V
30
RED/WHT WEN (WRITE ENABLE Detects write enable signal
With ignition switch ON
(II):
about 0 V
SIGNAl(
,
31 GRN/ORN . MIL (MALFUNCTION
Drives MIL With MIL turned ON: about 0 V
i
INDICATOR LAMPI With MIL turned OFF: battery voltage
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(cont'd)
11-23