ECM Terminal Voltage Table / Control Unit Connector

Z-47spec table

California and Canada (DRL) market distinctions noted in terminal table. ATX (automatic transaxle) condition noted for terminal 2P coolant fan relay. Fuel injectors No.1–No.6 indicate the K8-ZE V6 application.

Continued from Z-46

WIRING DIAGRAM

NOTE

B+: Battery positive voltage

ECM Terminal Voltage (Terminals 2H–3N)

Terminal	Input	Output	Connection to	Test condition	Correct voltage	Remarks
2H	○		—	Constant	Approx. 5V	—
2H	○		Ground (California)	Constant	0V	—
2I	○		Throttle position sensor / Volume airflow sensor / EGR valve position sensor / TCM	Constant	5V	—
2J	○		EGR valve position sensor	Ignition switch ON	Approx. 0.8V	—
2J	○		EGR valve position sensor	Engine running	Approx. 0.8–4.5V	—
2K	○		Intake air temperature sensor (Volume air flow sensor)	Ambient air temperature 20°C (68°F)	Approx. 2.5V	Ignition switch ON
2L	○		DRL relay (Canada)	Parking brake pulled with ignition switch ON (DRL OFF)	B+	DRL: Daytime Running Lights
2L	○		DRL relay (Canada)	Idle (DRL ON)	Below 2.5V	DRL: Daytime Running Lights
2M*	○		Knock sensor	Ignition switch ON	Approx. 0.7V	—
2M*	○		Knock sensor	Idle	Approx. 0.7V	—
2N	—	—	—	—	—	—
2O		○	Purge solenoid valve	Ignition switch ON or idle	B+	—
2P		○	Coolant fan relay (ATX)	Engine coolant temp. 108°C (226°F)	Below 2V	—
2P		○	Coolant fan relay (ATX)	Others	B+	—
3A	—	—	Ground (Output)	Constant	0V	—
3B	—	—	Ground (Fuel injector)	Constant	0V	—
3C	—	—	Ground (CPU)	Constant	0V	—
3D	—	—	Ground (Input)	Constant	0V	—
3E	○		Camshaft position sensor (in distributor) (SGT signal)	Ignition switch ON	Approx. 0V or 5V	—
3E	○		Camshaft position sensor (in distributor) (SGT signal)	Idle	Approx. 2.5 V	—
3F	○		Crankshaft position sensor (Crankshaft pulley) (Ground)	Constant	0V	—
3G	○		Camshaft position sensor (in distributor) (SGC signal)	Ignition switch ON	Approx. 0V or 5V	—
3G	○		Camshaft position sensor (in distributor) (SGC signal)	Idle	Approx. 2.5V	—
3H	○		Crankshaft position sensor (Crankshaft pulley) (NE signal)	Ignition switch ON	0V	—
3H	○		Crankshaft position sensor (Crankshaft pulley) (NE signal)	Idle	Approx. 0V	—
3I		○	VRIS solenoid valve No.1	Engine speed 3,900–6,300 rpm	Approx. 1.2V	—
3I		○	VRIS solenoid valve No.1	Others	B+	—
3J		○	VRIS solenoid valve No.2	Engine speed 4,700–6,300 rpm	Approx. 1.2V	—
3J		○	VRIS solenoid valve No.2	Others	B+	—
3K	—	—	—	—	—	—
3L		○	Coolant fan relay	Engine coolant temp. 100°C (212°F)	Below 1.0V	—
3L		○	Coolant fan relay	Others	B+	—
3M		○	PRC solenoid valve	Hot condition: Engine coolant temp. above 70°C and intake air temp. above 75°C for 120 sec. after engine starting	Approx. 1.2V	—
3M		○	PRC solenoid valve	Others	B+	—
3N		○	Condenser fan relay	Ignition switch ON	B+	—
3N		○	Condenser fan relay	Idle, Engine coolant temp. 108°C (226°F)	Below 2.0V	—
3N		○	Condenser fan relay	Idle, Others	B+	—

Input○

Output

Connection to—

Test conditionConstant

Correct voltageApprox. 5V

Remarks—

Input○

Output

Connection toGround (California)

Test conditionConstant

Correct voltage0V

Remarks—

Input○

Output

Connection toThrottle position sensor / Volume airflow sensor / EGR valve position sensor / TCM

Test conditionConstant

Correct voltage5V

Remarks—

Input○

Output

Connection toEGR valve position sensor

Test conditionIgnition switch ON

Correct voltageApprox. 0.8V

Remarks—

Input○

Output

Connection toEGR valve position sensor

Test conditionEngine running

Correct voltageApprox. 0.8–4.5V

Remarks—

Input○

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

Input○

Output

Connection toDRL relay (Canada)

Test conditionParking brake pulled with ignition switch ON (DRL OFF)

Correct voltageB+

RemarksDRL: Daytime Running Lights

Input○

Output

Connection toDRL relay (Canada)

Test conditionIdle (DRL ON)

Correct voltageBelow 2.5V

RemarksDRL: Daytime Running Lights

2M*

Input○

Output

Connection toKnock sensor

Test conditionIgnition switch ON

Correct voltageApprox. 0.7V

Remarks—

2M*

Input○

Output

Connection toKnock sensor

Test conditionIdle

Correct voltageApprox. 0.7V

Remarks—

Input—

Output—

Connection to—

Test condition—

Correct voltage—

Remarks—

Input

Output○

Connection toPurge solenoid valve

Test conditionIgnition switch ON or idle

Correct voltageB+

Remarks—

Input

Output○

Connection toCoolant fan relay (ATX)

Test conditionEngine coolant temp. 108°C (226°F)

Correct voltageBelow 2V

Remarks—

Input

Output○

Connection toCoolant fan relay (ATX)

Test conditionOthers

Correct voltageB+

Remarks—

Input—

Output—

Connection toGround (Output)

Test conditionConstant

Correct voltage0V

Remarks—

Input—

Output—

Connection toGround (Fuel injector)

Test conditionConstant

Correct voltage0V

Remarks—

Input—

Output—

Connection toGround (CPU)

Test conditionConstant

Correct voltage0V

Remarks—

Input—

Output—

Connection toGround (Input)

Test conditionConstant

Correct voltage0V

Remarks—

Input○

Output

Connection toCamshaft position sensor (in distributor) (SGT signal)

Test conditionIgnition switch ON

Correct voltageApprox. 0V or 5V

Remarks—

Input○

Output

Connection toCamshaft position sensor (in distributor) (SGT signal)

Test conditionIdle

Correct voltageApprox. 2.5 V

Remarks—

Input○

Output

Connection toCrankshaft position sensor (Crankshaft pulley) (Ground)

Test conditionConstant

Correct voltage0V

Remarks—

Input○

Output

Connection toCamshaft position sensor (in distributor) (SGC signal)

Test conditionIgnition switch ON

Correct voltageApprox. 0V or 5V

Remarks—

Input○

Output

Connection toCamshaft position sensor (in distributor) (SGC signal)

Test conditionIdle

Correct voltageApprox. 2.5V

Remarks—

Input○

Output

Connection toCrankshaft position sensor (Crankshaft pulley) (NE signal)

Test conditionIgnition switch ON

Correct voltage0V

Remarks—

Input○

Output

Connection toCrankshaft position sensor (Crankshaft pulley) (NE signal)

Test conditionIdle

Correct voltageApprox. 0V

Remarks—

Input

Output○

Connection toVRIS solenoid valve No.1

Test conditionEngine speed 3,900–6,300 rpm

Correct voltageApprox. 1.2V

Remarks—

Input

Output○

Connection toVRIS solenoid valve No.1

Test conditionOthers

Correct voltageB+

Remarks—

Input

Output○

Connection toVRIS solenoid valve No.2

Test conditionEngine speed 4,700–6,300 rpm

Correct voltageApprox. 1.2V

Remarks—

Input

Output○

Connection toVRIS solenoid valve No.2

Test conditionOthers

Correct voltageB+

Remarks—

Input—

Output—

Connection to—

Test condition—

Correct voltage—

Remarks—

Input

Output○

Connection toCoolant fan relay

Test conditionEngine coolant temp. 100°C (212°F)

Correct voltageBelow 1.0V

Remarks—

Input

Output○

Connection toCoolant fan relay

Test conditionOthers

Correct voltageB+

Remarks—

Input

Output○

Connection toPRC solenoid valve

Test conditionHot condition: Engine coolant temp. above 70°C and intake air temp. above 75°C for 120 sec. after engine starting

Correct voltageApprox. 1.2V

Remarks—

Input

Output○

Connection toPRC solenoid valve

Test conditionOthers

Correct voltageB+

Remarks—

Input

Output○

Connection toCondenser fan relay

Test conditionIgnition switch ON

Correct voltageB+

Remarks—

Input

Output○

Connection toCondenser fan relay

Test conditionIdle, Engine coolant temp. 108°C (226°F)

Correct voltageBelow 2.0V

Remarks—

Input

Output○

Connection toCondenser fan relay

Test conditionIdle, Others

Correct voltageB+

Remarks—

ECM Terminal Voltage (Terminals 3O–3Z)

Terminal	Input	Output	Connection to	Test condition	Correct voltage	Remarks
3O		○	EGR solenoid valve (vent)	Idle	B+	* Engine Signal Monitor: Green and red light flash
3O		○	EGR solenoid valve (vent)	Initial acceleration *	B+	* Engine Signal Monitor: Green and red light flash
3P		○	EGR solenoid valve (vacuum)	Idle	B+	* Engine Signal Monitor: Green and red light flash
3P		○	EGR solenoid valve (vacuum)	Initial acceleration*	B+	* Engine Signal Monitor: Green and red light flash
3Q		○	Idle air control valve	Ignition switch ON	Approx. 7V	—
3Q		○	Idle air control valve	Idle	Approx. 9V	—
3R	—	—	—	—	—	—
3S	—	—	—	—	—	—
3T		○	Fuel pump relay	Ignition switch ON	B+	—
3T		○	Fuel pump relay	Idle	Below 1.0V	—
3U		○	Fuel injector No.1	Ignition switch ON or idle*	B+	* Engine Signal Monitor: Green and red lights flash
3V		○	Fuel injector No.2	Ignition switch ON or idle*	B+	* Engine Signal Monitor: Green and red lights flash
3W		○	Fuel injector No.3	Ignition switch ON or idle*	B+	* Engine Signal Monitor: Green and red lights flash
3X		○	Fuel injector No.4	Ignition switch ON or idle*	B+	* Engine Signal Monitor: Green and red lights flash
3Y		○	Fuel injector No.5	Ignition switch ON or idle*	B+	* Engine Signal Monitor: Green and red lights flash
3Z		○	Fuel injector No.6	Ignition switch ON or idle*	B+	* Engine Signal Monitor: Green and red lights flash

Input

Output○

Connection toEGR solenoid valve (vent)

Test conditionIdle

Correct voltageB+

Remarks* Engine Signal Monitor: Green and red light flash

Input

Output○

Connection toEGR solenoid valve (vent)

Test conditionInitial acceleration *

Correct voltageB+

Remarks* Engine Signal Monitor: Green and red light flash

Input

Output○

Connection toEGR solenoid valve (vacuum)

Test conditionIdle

Correct voltageB+

Remarks* Engine Signal Monitor: Green and red light flash

Input

Output○

Connection toEGR solenoid valve (vacuum)

Test conditionInitial acceleration*

Correct voltageB+

Remarks* Engine Signal Monitor: Green and red light flash

Input

Output○

Connection toIdle air control valve

Test conditionIgnition switch ON

Correct voltageApprox. 7V

Remarks—

Input

Output○

Connection toIdle air control valve

Test conditionIdle

Correct voltageApprox. 9V

Remarks—

Input—

Output—

Connection to—

Test condition—

Correct voltage—

Remarks—

Input—

Output—

Connection to—

Test condition—

Correct voltage—

Remarks—

Input

Output○

Connection toFuel pump relay

Test conditionIgnition switch ON

Correct voltageB+

Remarks—

Input

Output○

Connection toFuel pump relay

Test conditionIdle

Correct voltageBelow 1.0V

Remarks—

Input

Output○

Connection toFuel injector No.1

Test conditionIgnition switch ON or idle*

Correct voltageB+

Remarks* Engine Signal Monitor: Green and red lights flash

Input

Output○

Connection toFuel injector No.2

Test conditionIgnition switch ON or idle*

Correct voltageB+

Remarks* Engine Signal Monitor: Green and red lights flash

Input

Output○

Connection toFuel injector No.3

Test conditionIgnition switch ON or idle*

Correct voltageB+

Remarks* Engine Signal Monitor: Green and red lights flash

Input

Output○

Connection toFuel injector No.4

Test conditionIgnition switch ON or idle*

Correct voltageB+

Remarks* Engine Signal Monitor: Green and red lights flash

Input

Output○

Connection toFuel injector No.5

Test conditionIgnition switch ON or idle*

Correct voltageB+

Remarks* Engine Signal Monitor: Green and red lights flash

Input

Output○

Connection toFuel injector No.6

Test conditionIgnition switch ON or idle*

Correct voltageB+

Remarks* Engine Signal Monitor: Green and red lights flash

NOTE

*: Diagnostic Trouble Code No. 05 may be memorized by ECM when the Engine Signal Monitor is set to position 2M.

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ECM Terminal Voltage Table / Control Unit Connector

WIRING DIAGRAM

ECM Terminal Voltage (Terminals 2H–3N)

ECM Terminal Voltage (Terminals 3O–3Z)

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