Isuzu engine C22NE / 22LE / 20LE. Manual — part 52
DRIVEABILITY AND EMISSIONS 6E1-37
ECM PINOUTS
ECM Pinout Table, 32-Pin Red Connector-Row “J2”
PIN
PIN Function
Wire Color
IGN ON
ENG RUN
Refer To
A1
Power Ground A
B/R
0.0V
0V
Appropriate Sensor
A2
Sensor Ground B
B/L
0.0V
0V
Appropriate Sensor
A3
5 Volt Reference Signal
R
5.0V
5V
Appropriate Sensor
A4
Battery Feed
R/W
12V
14V
Chassis Electrical
A5
Battery
R/W
12V
14V
Chassis Electrical
A6
Injector #4 Cyl
G
0V
14V
General Description and
Operation, Fuel Injector
A7
Injector #1 Cyl
G/W
0V
14V
General Description and
Operation, Fuel Injector
A8
Injector #3 Cyl
G/B
0V
14V
General Description and
Operation, Fuel Injector
A9
Inject #2 Cyl
G/R
0V
14V
General Description and
Operation, Fuel Injector
A10
Not Used
-
-
-
-
A11
Not Used
-
-
-
-
A12
Not Used
-
-
-
-
A13
Fuel Pump Relay
G/W
12V
0V
On-Vehicle Service Fuel
Pump Relay
A14
Charcoal Canister Purge
Solenoid Valve
(If applicable)
R/L
12V
14V
-
A15
Not Used
-
-
-
-
A16
A/C Clutch
W/R
0V
0V
-
6E1-38 DRIVEABILITY AND EMISSIONS
ECM Pinout Table, 32-Pin Red Connector-Row “J2”
PIN
PIN Function
Wire Clolr
IGN ON
ENG RUN
Rdfer To
B1
TPS
5 Volt Reference Signal A
G
0V
0V
Appropriate Sensor
B2
TPS
5 Volt Reference Signal B
G
0V
0V
Appropriate Sensor
B3
Not Used
-
-
-
-
B4
Check Engine Lamp
R/Y
0V
14V
Chassis Electrical
B5
Tacho-meter Signal
B/R
12V
8-10V
General Description and
Operation
B6
Not Used
-
-
-
-
B7
Map Input
W
5.0V
(0V=10kpa)
1.0V
(5V=104kpa)
General Description and
Operation, Manifold Absolute
Sensor
B8
Throttle Position Sensor
B
1.0V
1.0V
General Description and
Operation, TPS
B9
Not Used
-
-
-
-
B10
A/C Request Signal
G/B
0V
0V
-
B11
DLC (Digital Input)
B/W
12V
14V
Diagnosis, Serial Data
B12
Not Used
-
-
-
-
B13
IAC ”B” High
L/R
1V
1V
General Description and
Operation, IAC
B14
IAC ”B” Low
L/B
11V
13V
General Description and
Operation, IAC
B15
IAC ”A” Low
L/W
1V
1V
General Description and
Operation, IAC
B16
IAC ”A” High
L
11V
13V
General Description and
Operation, IAC
DRIVEABILITY AND EMISSIONS 6E1-39
COMPONENT LOCATOR
6E1-40 DRIVEABILITY AND EMISSIONS
HO2S(if applicable)
THREE-WAY CATALYTIC CONVERTER
(if applicable)
VEHICLE
SPEED SENSOR
(VSS)
FUEL FILTER
THROTTLE POSITION SENSOR
MAP SENSOR
EVAP PURGE CONTROL
SOLENOID VALVE
FUEL INJECTOR
IGNITION COIL
KNOCK SENSOR
CRANKSHAFT POSITION SENSOR
HEATED
OXGEN
SENSOR
(if applicable)
THROTTLE BODY
IAC VALVE
AIR CLEANER
INTAKE AIR
TEMPERATURE
SENSOR
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