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Fuel and Emissions Systems
System Descriptions (cont'd)
ECM Inputs and Outputs at Connector E (31P)
I
1
2
3
4
/
6
7
8
9
IMO
9-IJ2S
LG3
SG3
SH02S
MRLY
AFS
IG1
FPR
HTC
HTCR
V
/ /
V
14
15
16
1/
18
/
20
21
FTP
ELD
EPS
ACC
2WBS
VSV
LD
22
23
24
V
26
27
/
29
30
31
BKSW K-UNE 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
Signal
number
1
GRN/YEL
IMO FPR (IMMOBILIZER
Drives PGM FI main relay 2
o
V
for
2 seconds after turning ignition switch ON
FUEL PUMP RELAY)
(II)
then battery voltage
2
WHT/RED
SH02S ISECONDARY
Detects secondary H02S
With throttle fully opened from idle with fully
HEATED OXYGEN SENSOR
(sensor
2)
signal
warmed up engine: above 0.6 V
(SECONDARY H02S)'
With throttle quickly closed: below 0.4 V
SENSOR 2)
3
BRN/YEL
LG3(LOGIC GROUND)
Ground
far the
ECM/PCM
Less than 1.0 V at all times
control circuit
4
PNK
SG3(SENSOR GROUNDI
Sensor ground
Less than 1.0 V at all times
5
YELJBLU
VCC3(SENSOR VOLTAGE)
Provides sensor voltage
With ignition switch ON (II): about 5 V
With ignition
switch OFF: about 0 V
6
BLK/WHT
S02SHTC ISECONDARY
Drives secondary H02S
With ignition switch ON
(II):
battery voltage
HEATED OXYGEN SENSOR
heater
With
fully warmed
up engine running: duty
(SECONDARY H02S)
controlled
HEATER CONTROL)
7
RED/YEL
MRLY IPGM-FI MAIN
Drives PGM-FI main relay 1
With ignition switch ON (II): about 0 V
RELAY)
Power source for the DTC
With ignition switch OFF: battery voltage
memorv
8
ORN
AFSHTCR (AIR FUEL RATIO
Drives air fuel ratio sensor
With ignition switch ON (II): 0 V
lA/F) SENSOR HEATER
heater relay
CONTROL RELAY}
9
YElJBLK
IG1 (IGNITION SIGNAL}
Detects ignition signal
With ignition switch ON
(It):
battery voltage
With ianition switch OFF: about 0 V
14
LTGRN
FTP(FUEL TANK
Detects FTP sensor signal
With ignition switch ON (II) and fuel fill cap open:
PRESSURE (FTP)SENSOR)
about 2.5 V
-
15
GRN/RED
ELD (ELECTRICAL LOAD
Detects ELD signal
With ig-nition switch ON
ill):
about 0.'
V
4.8 V
DETECTOR)
(deDendina on
electrical load)
16
LT GRN/BLK
EPSLD (ELECTRICAL
Detects Power steering load
I
At idle with steering wheel in straight ahead
POWER STEERING LOAD
signal
position: about 0 V
DETECT}
At idle with steering wheel at
full lock:
momentary
batter voltaae
18
RED
ACC (A/C CLUTCH RELAY)
Drives AlC clutch relay
With compressor ON: about 0 V
With compressor OFF: battery voltaae
,-
.•
11-22
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Troubleshooting
