Ecm Inputs And Outputs At Connector B (24P) - Honda Civic 2002-2003 Service Manual

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ECM Inputs and Outputs at Connector B (24P)
I
1
2 3
4
5 6
7
VTC+
INJ4
INJ3
INJ2
INJ1 FANC
RVS
8
9
10
L
/
13
/
15
/
ECT
VTPSW
ALTL ALTF
VTS
17 18
1/ /
21
~
23
~
IAT ALTC PCS
VTC-
Wire side of female terminals
NOTE: Standard battery voltage is 12 V.
Terminal Wire color
Terminal name Description Signal
number
1 BLU/WHT VTC+ (VTC OIL CONTROL Drives VTC oil control With ignition switch ON (II): 0 V
SOLENOID VALVE +SIDE) solenoid valve
2 VEL INJ4(No.4INJECTOR)
Drives No.4 iniector At idle: duty controlled
3 BLU INJ3 (No. 3 INJECTOR) Drives No.3 iniector
4 RED INJ2(No. 2 INJECTOR) Drives No.2 in'ector
5 BRN INJ1 (No. 1 INJECTOR) Drives NO.1 injector
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6 GRN FANC (RADIATOR FAN
Drives radiator fan relay
With radiator fan running: about 0 V
CONTROL) With radiator fan staDoed: batter voltaae
7 GRN/WHT RVS (REVERSE LOCK Drives reverse lock solenoid With vehicle speed below 9.4 mph (15 km/h):
SOLENOID VALVEI
valve battery voltage
With vehicle sneed above 12.5 mph (20 km/h): 0 V
8 RED/WHT ECT (ENGINE COOLANT Detects ECT sensor signal With the ignition switch ON
(II):
about 0.' 4.8V
TEMPERATURE SENSOR) (deoendinq on enaine coolanttemoerature)
9
BLU/BLK VTPSW (VTEC OIL Detects VTEC oil pressure
With engine at low engine speed: about 0 V
PRESSURE SWITCH) switch sianal With enQine at hiah enaine soeed: battery voltaqe
10 WHT/BLU
ALTL (ALTERNATOR L
Detects alternator L signal
" With ignition switch ON (II): about 0 V
SIGNALI With enaine runnina: batter voltaqe
13
WHT/RED
ALTF (ALTERNATOR FR
Detects alternator FR signal
With engine running: about 0 V
5V
SIGNAL) (deoendina on electrical load)
15 GRN/YEL VTS (VTEC SOLENOID Drives VTEC solenoid
valve
At idle: about 0 V
VALVE)
17 RED/YEL IAT !INTAKE AIR Detects IAT sensor signal
With ignition switch ON (II): about 0.1 V 4.8V
TEMPERATURE SENSOR) (dependinq on intake air temperature)
18
WHT/GRN
ALTC (ALTERNATOR
Sends alternator control
With engine running: about 0 V 5 V
CONTROL) siqnal
(dependinq on electrical load)
21 VELJBLU PCS (EVAPORATIVE
, Drives EVAPcanister purge With engine running, engine" coolant below" 49°F
EMISSION CANISTER
1
valve (65°C): battery voltage
PURGE VALVE) With engine running, engine coolant
above'
4goF
(65°C): duty controlled
23 BLK/WHT VTC (VTC OIL CONTROL Drives VTC oil control With the ignition switch ON (II): 0 V
SOLENOID VALVE -SIDE)
solenoid valve
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(cont'd)
11-21