Terminal voltage (reference data)

Z-38spec table

Terminal 1I applies to ATX. *1 (terminal 1O) = reduce torque signal.

B-1

Terminal voltage (reference data)

NOTE

B+: Battery positive voltage

Terminal voltage (reference data) — terminals 1A–1U

Terminal	Input/Output	Connection to	Test condition	Correct voltage	Remark
1A	Input	Battery	Constant	B+	For backup
1B	Input	Main relay (FUEL INJ relay)	Ignition switch OFF	0V	—
1B	Input	Main relay (FUEL INJ relay)	Ignition switch ON	B+	—
1C	Input	Ignition switch (START)	Ignition switch ON	0V	—
1C	Input	Ignition switch (START)	While cranking	Approx. 10V	—
1D	Output	Data link connector (MEN terminal)	Test switch at "SELF-TEST"; Lamp illuminated for 3 sec. after ignition switch OFF → ON	4.5–5.5V	With Self-Diagnosis Checker and System Selector
1D	Output	Data link connector (MEN terminal)	Lamp not illuminated after 3 sec.	B+	With Self-Diagnosis Checker and System Selector
1D	Output	Data link connector (MEN terminal)	Test switch at "O2 MONITOR" at idle; Monitor lamp illuminated	4.5V–5.5V	With Self-Diagnosis Checker and System Selector
1D	Output	Data link connector (MEN terminal)	Test switch at "O2 MONITOR" at idle; Monitor lamp not illuminated	B+	With Self-Diagnosis Checker and System Selector
1E	Output	Malfunction indicator lamp (MIL)	Lamp illuminated for 3 sec. after ignition switch OFF → ON	Below 2.5V	With System Selector test switch at "SELF-TEST"
1E	Output	Malfunction indicator lamp (MIL)	Lamp not illuminated after 3 sec.	B+	With System Selector test switch at "SELF-TEST"
1E	Output	Malfunction indicator lamp (MIL)	Lamp illuminated	Below 2.5V	With System Selector test switch at "SELF-TEST"
1E	Output	Malfunction indicator lamp (MIL)	Lamp not illuminated	B+	With System Selector test switch at "SELF-TEST"
1E	Output	Data link connector (FEN terminal)	Buzzer sounded for 3 sec. after ignition switch OFF → ON	Below 2.5V	With Self-Diagnosis Checker and System Selector; With System Selector test switch at "SELF-TEST"
1E	Output	Data link connector (FEN terminal)	Buzzer not sounded after 3 sec.	B+	With Self-Diagnosis Checker and System Selector
1E	Output	Data link connector (FEN terminal)	Buzzer sounded	Below 2.5V	With System Selector test switch at "SELF-TEST"
1E	Output	Data link connector (FEN terminal)	Buzzer not sounded after 3 sec.	B+	With System Selector test switch at "SELF-TEST"
1F	Output	VICS solenoid valve	Engine speed below 4,750 rpm	0V	VICS: Variable Inertia Charging System
1F	Output	VICS solenoid valve	Engine speed above 4,750 rpm	B+	VICS: Variable Inertia Charging System
1G	Output	Ignition control module	Ignition switch ON	0V	—
1G	Output	Ignition control module	Idle	Approx. 0.2V	—
1H	Output	PRC solenoid valve No.2	Hot condition: Engine coolant temp. above 95°C (203°F) and Intake air temp. above 60°C (140°F) for 149 sec. after engine starting	Below 1.0V	—
1H	Output	PRC solenoid valve No.2	Other conditions (idle)	B+	—
1I	Output	TCM (ATX)	Engine coolant temperature below 72°C (162°F) at idle	Below 2.5V	Ignition switch ON
1I	Output	TCM (ATX)	Engine coolant temperature above 72°C (162°F) at idle	B+	Ignition switch ON
1J	Output	A/C relay	A/C switch ON at idle	Below 2.5V	Blower switch ON
1J	Output	A/C relay	A/C switch OFF at idle	B+	Blower switch ON
1K	Input	Data link connector (TEN terminal)	System Selector test switch at O2 MONITOR	B+	With Self-Diagnosis Checker and System Selector; Ignition switch ON
1K	Input	Data link connector (TEN terminal)	System Selector test switch at SELF-TEST	0V	With Self-Diagnosis Checker and System Selector; Ignition switch ON

Input/OutputInput

Connection toBattery

Test conditionConstant

Correct voltageB+

RemarkFor backup

Input/OutputInput

Connection toMain relay (FUEL INJ relay)

Test conditionIgnition switch OFF

Correct voltage0V

Remark—

Input/OutputInput

Connection toMain relay (FUEL INJ relay)

Test conditionIgnition switch ON

Correct voltageB+

Remark—

Input/OutputInput

Connection toIgnition switch (START)

Test conditionIgnition switch ON

Correct voltage0V

Remark—

Input/OutputInput

Connection toIgnition switch (START)

Test conditionWhile cranking

Correct voltageApprox. 10V

Remark—

Input/OutputOutput

Connection toData link connector (MEN terminal)

Test conditionTest switch at "SELF-TEST"; Lamp illuminated for 3 sec. after ignition switch OFF → ON

Correct voltage4.5–5.5V

RemarkWith Self-Diagnosis Checker and System Selector

Input/OutputOutput

Connection toData link connector (MEN terminal)

Test conditionLamp not illuminated after 3 sec.

Correct voltageB+

RemarkWith Self-Diagnosis Checker and System Selector

Input/OutputOutput

Connection toData link connector (MEN terminal)

Test conditionTest switch at "O2 MONITOR" at idle; Monitor lamp illuminated

Correct voltage4.5V–5.5V

RemarkWith Self-Diagnosis Checker and System Selector

Input/OutputOutput

Connection toData link connector (MEN terminal)

Test conditionTest switch at "O2 MONITOR" at idle; Monitor lamp not illuminated

Correct voltageB+

RemarkWith Self-Diagnosis Checker and System Selector

Input/OutputOutput

Connection toMalfunction indicator lamp (MIL)

Test conditionLamp illuminated for 3 sec. after ignition switch OFF → ON

Correct voltageBelow 2.5V

RemarkWith System Selector test switch at "SELF-TEST"

Input/OutputOutput

Connection toMalfunction indicator lamp (MIL)

Test conditionLamp not illuminated after 3 sec.

Correct voltageB+

RemarkWith System Selector test switch at "SELF-TEST"

Input/OutputOutput

Connection toMalfunction indicator lamp (MIL)

Test conditionLamp illuminated

Correct voltageBelow 2.5V

RemarkWith System Selector test switch at "SELF-TEST"

Input/OutputOutput

Connection toMalfunction indicator lamp (MIL)

Test conditionLamp not illuminated

Correct voltageB+

RemarkWith System Selector test switch at "SELF-TEST"

Input/OutputOutput

Connection toData link connector (FEN terminal)

Test conditionBuzzer sounded for 3 sec. after ignition switch OFF → ON

Correct voltageBelow 2.5V

RemarkWith Self-Diagnosis Checker and System Selector; With System Selector test switch at "SELF-TEST"

Input/OutputOutput

Connection toData link connector (FEN terminal)

Test conditionBuzzer not sounded after 3 sec.

Correct voltageB+

RemarkWith Self-Diagnosis Checker and System Selector

Input/OutputOutput

Connection toData link connector (FEN terminal)

Test conditionBuzzer sounded

Correct voltageBelow 2.5V

RemarkWith System Selector test switch at "SELF-TEST"

Input/OutputOutput

Connection toData link connector (FEN terminal)

Test conditionBuzzer not sounded after 3 sec.

Correct voltageB+

RemarkWith System Selector test switch at "SELF-TEST"

Input/OutputOutput

Connection toVICS solenoid valve

Test conditionEngine speed below 4,750 rpm

Correct voltage0V

RemarkVICS: Variable Inertia Charging System

Input/OutputOutput

Connection toVICS solenoid valve

Test conditionEngine speed above 4,750 rpm

Correct voltageB+

RemarkVICS: Variable Inertia Charging System

Input/OutputOutput

Connection toIgnition control module

Test conditionIgnition switch ON

Correct voltage0V

Remark—

Input/OutputOutput

Connection toIgnition control module

Test conditionIdle

Correct voltageApprox. 0.2V

Remark—

Input/OutputOutput

Connection toPRC solenoid valve No.2

Test conditionHot condition: Engine coolant temp. above 95°C (203°F) and Intake air temp. above 60°C (140°F) for 149 sec. after engine starting

Correct voltageBelow 1.0V

Remark—

Input/OutputOutput

Connection toPRC solenoid valve No.2

Test conditionOther conditions (idle)

Correct voltageB+

Remark—

Input/OutputOutput

Connection toTCM (ATX)

Test conditionEngine coolant temperature below 72°C (162°F) at idle

Correct voltageBelow 2.5V

RemarkIgnition switch ON

Input/OutputOutput

Connection toTCM (ATX)

Test conditionEngine coolant temperature above 72°C (162°F) at idle

Correct voltageB+

RemarkIgnition switch ON

Input/OutputOutput

Connection toA/C relay

Test conditionA/C switch ON at idle

Correct voltageBelow 2.5V

RemarkBlower switch ON

Input/OutputOutput

Connection toA/C relay

Test conditionA/C switch OFF at idle

Correct voltageB+

RemarkBlower switch ON

Input/OutputInput

Connection toData link connector (TEN terminal)

Test conditionSystem Selector test switch at O2 MONITOR

Correct voltageB+

RemarkWith Self-Diagnosis Checker and System Selector; Ignition switch ON

Input/OutputInput

Connection toData link connector (TEN terminal)

Test conditionSystem Selector test switch at SELF-TEST

Correct voltage0V

RemarkWith Self-Diagnosis Checker and System Selector; Ignition switch ON

Terminal voltage (reference data) — terminals 1L–1U

Terminal	Input/Output	Connection to	Test condition	Correct voltage	Remark
1L	Output	Coolant fan relay	Ignition switch ON	B+	—
1L	Output	Coolant fan relay	Idle; Engine coolant temp. above 97°C (206.6°F)	Below 1.0V	A/C sensor OFF
1L	Output	Coolant fan relay	Idle; Other conditions	B+	—
1L	Output	Coolant fan relay	Ignition switch ON; Ground data link connector TEN terminal; Closed throttle position switch OFF	Below 1.0V	—
1M	Input	Vehicle speed sensor	While driving	2–5V	—
1M	Input	Vehicle speed sensor	Vehicle stopped	1 or 7V	—
1N	Input	Throttle position sensor (Closed throttle position switch)	Accelerator pedal released	0V	Ignition switch ON
1N	Input	Throttle position sensor (Closed throttle position switch)	Accelerator pedal depressed	B+	Ignition switch ON
1O	Output	TCM *1	At shifting	Below 1.0V	—
1O	Output	TCM *1	Other	B+	—
1P	Output	Power steering pressure switch	Ignition switch ON	B+	—
1P	Output	Power steering pressure switch	P/S ON at idle	0V	—
1P	Output	Power steering pressure switch	P/S OFF at idle	B+	—
1Q	Output	Air conditioning switch	A/C switch ON	Below 2.5V	Ignition switch ON and blower switch ON
1Q	Output	Air conditioning switch	A/C switch OFF	B+	Ignition switch ON and blower switch ON
1R	Output	EGR solenoid valve (vent)	Idle	B+	Engine Signal Monitor: Green and red lamps flash after warm
1R	Output	EGR solenoid valve (vent)	Driving	B+*	Engine Signal Monitor: Green and red lamps flash after warm
1S	Output	Fan switch	Fan switch OFF or 1st position	B+	Ignition switch ON
1S	Output	Fan switch	Fan switch 2nd or higher position	0V	Ignition switch ON
1T	Output	EGR solenoid valve (vacuum)	Idle	B+	Engine Signal Monitor: Green and red lamps flash after warm up
1T	Output	EGR solenoid valve (vacuum)	Driving	B+*	Engine Signal Monitor: Green and red lamps flash after warm up
1U	Output	TNS RELAY	Headlights ON	B+	—
1U	Output	TNS RELAY	Headlights OFF	Below 1.0V	—

Input/OutputOutput

Connection toCoolant fan relay

Test conditionIgnition switch ON

Correct voltageB+

Remark—

Input/OutputOutput

Connection toCoolant fan relay

Test conditionIdle; Engine coolant temp. above 97°C (206.6°F)

Correct voltageBelow 1.0V

RemarkA/C sensor OFF

Input/OutputOutput

Connection toCoolant fan relay

Test conditionIdle; Other conditions

Correct voltageB+

Remark—

Input/OutputOutput

Connection toCoolant fan relay

Test conditionIgnition switch ON; Ground data link connector TEN terminal; Closed throttle position switch OFF

Correct voltageBelow 1.0V

Remark—

Input/OutputInput

Connection toVehicle speed sensor

Test conditionWhile driving

Correct voltage2–5V

Remark—

Input/OutputInput

Connection toVehicle speed sensor

Test conditionVehicle stopped

Correct voltage1 or 7V

Remark—

Input/OutputInput

Connection toThrottle position sensor (Closed throttle position switch)

Test conditionAccelerator pedal released

Correct voltage0V

RemarkIgnition switch ON

Input/OutputInput

Connection toThrottle position sensor (Closed throttle position switch)

Test conditionAccelerator pedal depressed

Correct voltageB+

RemarkIgnition switch ON

Input/OutputOutput

Connection toTCM *1

Test conditionAt shifting

Correct voltageBelow 1.0V

Remark—

Input/OutputOutput

Connection toTCM *1

Test conditionOther

Correct voltageB+

Remark—

Input/OutputOutput

Connection toPower steering pressure switch

Test conditionIgnition switch ON

Correct voltageB+

Remark—

Input/OutputOutput

Connection toPower steering pressure switch

Test conditionP/S ON at idle

Correct voltage0V

Remark—

Input/OutputOutput

Connection toPower steering pressure switch

Test conditionP/S OFF at idle

Correct voltageB+

Remark—

Input/OutputOutput

Connection toAir conditioning switch

Test conditionA/C switch ON

Correct voltageBelow 2.5V

RemarkIgnition switch ON and blower switch ON

Input/OutputOutput

Connection toAir conditioning switch

Test conditionA/C switch OFF

Correct voltageB+

RemarkIgnition switch ON and blower switch ON

Input/OutputOutput

Connection toEGR solenoid valve (vent)

Test conditionIdle

Correct voltageB+

RemarkEngine Signal Monitor: Green and red lamps flash after warm

Input/OutputOutput

Connection toEGR solenoid valve (vent)

Test conditionDriving

Correct voltageB+*

RemarkEngine Signal Monitor: Green and red lamps flash after warm

Input/OutputOutput

Connection toFan switch

Test conditionFan switch OFF or 1st position

Correct voltageB+

RemarkIgnition switch ON

Input/OutputOutput

Connection toFan switch

Test conditionFan switch 2nd or higher position

Correct voltage0V

RemarkIgnition switch ON

Input/OutputOutput

Connection toEGR solenoid valve (vacuum)

Test conditionIdle

Correct voltageB+

RemarkEngine Signal Monitor: Green and red lamps flash after warm up

Input/OutputOutput

Connection toEGR solenoid valve (vacuum)

Test conditionDriving

Correct voltageB+*

RemarkEngine Signal Monitor: Green and red lamps flash after warm up

Input/OutputOutput

Connection toTNS RELAY

Test conditionHeadlights ON

Correct voltageB+

Remark—

Input/OutputOutput

Connection toTNS RELAY

Test conditionHeadlights OFF

Correct voltageBelow 1.0V

Remark—

NOTE

*1 Reduce torque signal

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Terminal voltage (reference data)

B-1