CONTROL SYSTEM — ECM Terminal Voltage Specification
F2-146spec tableCalifornia-specific ground at 2H; DRL relay Canada-only at 2L; ATX-specific coolant fan relay at 2P. VRIS solenoids and knock sensor relate to K8 V6.
NOTE
B+: Battery positive voltage
ECM Terminal — Input/Output, Connection, Test Condition, Correct Voltage
2H
InputO
Output
Connection to—
Test conditionConstant
Correct voltageApprox. 5V
Remarks—
2H
InputO
Output
Connection toGround (California)
Test conditionConstant
Correct voltage0V
Remarks—
2I
Input
OutputO
Connection toThrottle position sensor / Volume airflow sensor / EGR valve position sensor / TCM
Test conditionIgnition switch ON
Correct voltage5V
Remarks
2J
InputO
Output
Connection toEGR valve position sensor
Test conditionIgnition switch ON
Correct voltageApprox. 0.8V
Remarks—
2J
InputO
Output
Connection toEGR valve position sensor
Test conditionEngine running
Correct voltageApprox. 0.8-4.5V
Remarks—
2K
InputO
Output
Connection toIntake air temperature sensor (Volume air flow sensor)
Test conditionAmbient air temperature 20°C {68°F}
Correct voltageApprox. 2.5V
RemarksIgnition switch ON
2L
InputO
Output
Connection toDRL relay (Canada)
Test conditionParking brake pulled with ignition switch ON (DRL OFF)
Correct voltageB+
RemarksDRL: Daytime Running Lights
2L
InputO
Output
Connection toDRL relay (Canada)
Test conditionIdle (DRL ON)
Correct voltageBelow 2.5V
RemarksDRL: Daytime Running Lights
2M*
InputO
Output
Connection toKnock sensor
Test conditionIgnition switch ON
Correct voltageApprox. 0.7V
Remarks—
2M*
InputO
Output
Connection toKnock sensor
Test conditionIdle
Correct voltageApprox. 0.7V
Remarks—
2N
Input—
Output—
Connection to—
Test condition—
Correct voltage—
Remarks—
2O
Input
OutputO
Connection toPurge solenoid valve
Test conditionIgnition switch ON or idle
Correct voltageB+
Remarks
2P
Input
OutputO
Connection toCoolant fan relay (ATX)
Test conditionEngine coolant temp. 108°C {226°F}
Correct voltageBelow 2V
Remarks—
2P
Input
OutputO
Connection toCoolant fan relay (ATX)
Test conditionOthers
Correct voltageB+
Remarks—
3A
Input—
Output—
Connection toGround (Output)
Test conditionConstant
Correct voltage0V
Remarks—
3B
Input—
Output—
Connection toGround (Fuel injector)
Test conditionConstant
Correct voltage0V
Remarks—
3C
Input—
Output—
Connection toGround (CPU)
Test conditionConstant
Correct voltage0V
Remarks—
3D
Input—
Output—
Connection toGround (Input)
Test conditionConstant
Correct voltage0V
Remarks—
3E
InputO
Output
Connection toCamshaft position sensor (in distributor) (SGT signal)
Test conditionIgnition switch ON
Correct voltageApprox. 0V or 5V
Remarks—
3E
InputO
Output
Connection toCamshaft position sensor (in distributor) (SGT signal)
Test conditionIdle
Correct voltageApprox. 2.5 V
Remarks—
3F
InputO
Output
Connection toCrankshaft position sensor (Crankshaft pulley) (Ground)
Test conditionConstant
Correct voltage0V
Remarks—
3G
InputO
Output
Connection toCamshaft position sensor (in distributor) (SGC signal)
Test conditionIgnition switch ON
Correct voltageApprox. 0V or 5V
Remarks—
3G
InputO
Output
Connection toCamshaft position sensor (in distributor) (SGC signal)
Test conditionIdle
Correct voltageApprox. 2.5V
Remarks—
3H
InputO
Output
Connection toCrankshaft position sensor (Crankshaft pulley) (NE signal)
Test conditionIgnition switch ON
Correct voltage0V
Remarks—
3H
InputO
Output
Connection toCrankshaft position sensor (Crankshaft pulley) (NE signal)
Test conditionIdle
Correct voltageApprox. 0V
Remarks—
3I
Input
OutputO
Connection toVRIS solenoid valve No.1
Test conditionEngine speed 3,900-6,300 rpm
Correct voltageApprox. 1.2V
Remarks—
3I
Input
OutputO
Connection toVRIS solenoid valve No.1
Test conditionOthers
Correct voltageB+
Remarks—
3J
Input
OutputO
Connection toVRIS solenoid valve No.2
Test conditionEngine speed 4,700-6,300 rpm
Correct voltageApprox. 1.2V
Remarks—
3J
Input
OutputO
Connection toVRIS solenoid valve No.2
Test conditionOthers
Correct voltageB+
Remarks—
3K
Input—
Output—
Connection to—
Test condition—
Correct voltage—
Remarks—
3L
Input
OutputO
Connection toCoolant fan relay
Test conditionEngine coolant temp. 100°C {212°F}
Correct voltageBelow 1.0V
Remarks—
3L
Input
OutputO
Connection toCoolant fan relay
Test conditionOthers
Correct voltageB+
Remarks—
3M
Input
OutputO
Connection toPRC solenoid valve
Test conditionHot condition: Engine coolant temp. above 70°C {158°F} and intake air temp. above 75°C {158°F} for 120 sec. after engine starting
Correct voltageApprox. 1.2V
Remarks—
3M
Input
OutputO
Connection toPRC solenoid valve
Test conditionOthers
Correct voltageB+
Remarks—
3N
Input
OutputO
Connection toCondenser fan relay
Test conditionIgnition switch ON
Correct voltageB+
Remarks—
3N
Input
OutputO
Connection toCondenser fan relay
Test conditionIdle; Engine coolant temp. 108°C {226°F}
Correct voltageBelow 2.0V
Remarks—
3N
Input
OutputO
Connection toCondenser fan relay
Test conditionIdle; Others
Correct voltageB+
Remarks—
NOTE
*: Diagnostic trouble code No. 05 may be memorized by ECM when the Engine Signal Monitor is set to position 2M.