Ecm Inputs And Outputs At Connector A (31 P) - Honda Civic 2002-2003 Service Manual

Fuel and Emissions Systems
System Descriptions (cont'd)
ECM Inputs and Outputs at Connector A (31 P)
I
1
2
3 4 5 6 7
/
9
AFSYTC
IGP2 IGP1 PG2
PG1
AFS+ CKP KS
10 11 12
1/
/ 15 16
1/
18
19 20
21
SG2 SG1 IACV TPS AFS-
VSS
MAP VCC2 VCC1
22
23 24 25
26
27 28 29 30
1/
AFS
CMPB
HTC+
LG2 LG1
CMPA (TOC) IGPLS4 IGPLS3 IGPLS2 IGPLS1
Wire side of female terminals
NOTE: Standard battery voltage is 12 V.
Terminal
Wire color Terminal name
Description
Signal
number
19 GRN/RED MAP {MANIFOLD
Detects MAP sensor signal
With ignition switch ON (II): about 3 V
ABSOLUTE PRESSURE
At idle: about 1.0 V (depending on engine speed)
SENSORI
20 YELJBLU
VCC2{SENSOR VOLTAGEI
Provides sensor voltage
!
With ignition switch ON (II): about 5 V
i
With
ian it ion
switch OFF: about 0 V
21 YELJRED VCC1 {SENSOR VOLTAGEI
Provides sensor voltage
' With ignition switch ON (II): about 5 V
With ianition switch OFF: about 0 V
22 WHT 'AFSHTC {AIR FUEL Detects A/F sensor heater With ignition switch ON (II): battery voltage
I
RATIO {NFl SENSOR
voltage
HEATER CONTROL
+
SIDEI
23
BRN/YEL LG2{LOGIC GROUNDI
Ground
for the
ECM circuit
Less than 1.0 V at all times
24
I
BRN/YEL
LG1{LOGIC GROUNDI
Ground for the ECM circuit less than 1.0 V at all times
25 BLU/WHT CMP A {CAMSHAFT
Detects CMP sensor A With engine running: pulses
POSITION SENSOR AI
I
sinnal
26 GRN
CMP B CAMSHAFT
I
Detects CMP sensor B (TDC With engine running: pulses
POSITION {CMPI SENSOR
sensor}
B {TDC (TDP DEAD CENTER
SENSORI)
27
BRN IGPLS4{No.4IGNITION
Drives No.4 ignition coil With ignition switch ON (II): about 0 V
COIL PULSEI
With engine running: pulses
28 WHT/BLU IGPLS3{No.3IGNITION
Drives No.3 ignition coil
COIL PULSEI
29 BLU/RED
IGPLS2{No.2 IGNITION
Drives No.2 ignition coil
I
, COIL PULSEI
I
30 YELJGRN
i
IGPLS1 (No. 1 IGNITION Drives NO.1 ignition coil
COIL PULSEI
•
11-20