Check ABS control module

Z-115wiring diagram

NOTE

B+: Battery Positive Voltage

ABS control module connector — 12 pin terminal voltages

Connector	Terminal	Connected to	Condition	Voltage (V)	Remark
12 pins	1A	Right rear wheel solenoid	Solenoid ON*	0-2	* Solenoid is ON only when ABS system is functioning. Voltage when solenoid is ON can be measured following "Hydraulic System Test". (Refer to P-69.)
12 pins	1A	Right rear wheel solenoid	Ignition switch ON	B+
12 pins	1B	Left front wheel solenoid	Solenoid ON*	0-2
12 pins	1B	Left front wheel solenoid	Ignition switch ON	B+
12 pins	1C	Right front wheel solenoid	Solenoid ON*	0-2
12 pins	1C	Right front wheel solenoid	Ignition switch ON	B+
12 pins	1D	Left rear wheel solenoid	Solenoid ON*	0-2
12 pins	1D	Left rear wheel solenoid	Ignition switch ON	B+
12 pins	1E	Ground	Constant	0
12 pins	1F	Ground	Constant	0
12 pins	1H	Battery	Ignition switch ON	B+
12 pins	1H	Battery	Ignition switch OFF	0
12 pins	1J	Not used	—	—
12 pins	1K	Not used	—	—
12 pins	1L	Motor	Motor running	B+
12 pins	1L	Motor	Motor stopped	0-1
12 pins	1M	Brake switch	Brake pedal depressed	B+
12 pins	1M	Brake switch	Brake pedal released	0-2
12 pins	1N	Not used	—	—

12 pins

Terminal1A

Connected toRight rear wheel solenoid

ConditionSolenoid ON*

Voltage (V)0-2

Remark* Solenoid is ON only when ABS system is functioning. Voltage when solenoid is ON can be measured following "Hydraulic System Test". (Refer to P-69.)

12 pins

Terminal1A

Connected toRight rear wheel solenoid

ConditionIgnition switch ON

Voltage (V)B+

Remark

12 pins

Terminal1B

Connected toLeft front wheel solenoid

ConditionSolenoid ON*

Voltage (V)0-2

Remark

12 pins

Terminal1B

Connected toLeft front wheel solenoid

ConditionIgnition switch ON

Voltage (V)B+

Remark

12 pins

Terminal1C

Connected toRight front wheel solenoid

ConditionSolenoid ON*

Voltage (V)0-2

Remark

12 pins

Terminal1C

Connected toRight front wheel solenoid

ConditionIgnition switch ON

Voltage (V)B+

Remark

12 pins

Terminal1D

Connected toLeft rear wheel solenoid

ConditionSolenoid ON*

Voltage (V)0-2

Remark

12 pins

Terminal1D

Connected toLeft rear wheel solenoid

ConditionIgnition switch ON

Voltage (V)B+

Remark

12 pins

Terminal1E

Connected toGround

ConditionConstant

Voltage (V)0

Remark

12 pins

Terminal1F

Connected toGround

ConditionConstant

Voltage (V)0

Remark

12 pins

Terminal1H

Connected toBattery

ConditionIgnition switch ON

Voltage (V)B+

Remark

12 pins

Terminal1H

Connected toBattery

ConditionIgnition switch OFF

Voltage (V)0

Remark

12 pins

Terminal1J

Connected toNot used

Condition—

Voltage (V)—

Remark

12 pins

Terminal1K

Connected toNot used

Condition—

Voltage (V)—

Remark

12 pins

Terminal1L

Connected toMotor

ConditionMotor running

Voltage (V)B+

Remark

12 pins

Terminal1L

Connected toMotor

ConditionMotor stopped

Voltage (V)0-1

Remark

12 pins

Terminal1M

Connected toBrake switch

ConditionBrake pedal depressed

Voltage (V)B+

Remark

12 pins

Terminal1M

Connected toBrake switch

ConditionBrake pedal released

Voltage (V)0-2

Remark

12 pins

Terminal1N

Connected toNot used

Condition—

Voltage (V)—

Remark

ABS control module connector — 18 pin terminal voltages

Connector	Terminal	Connected to	Condition	Voltage (V)	Remark
18 pins	2A	FBS check terminal	Ignition switch ON	0
18 pins	2B	TBS check terminal	Normal mode	B+
18 pins	2B	TBS check terminal	Diagnostic mode	0
18 pins	2C	Not used	—	—
18 pins	2D	Not used	—	—
18 pins	2E	Not used	—	—
18 pins	2F	Not used	Engine idling	B+
18 pins	2H	Motor relay	Motor relay ON	0-2	• Turn wheel at specified speed to prevent incorrect diagnosis. • Check following terminals of ABS wheel-speed sensor in AC range: 2N-2M (right front) 2O-2P (left front) 2R-2Q (left rear) 2S-2T (right rear)
18 pins	2H	Motor relay	Motor relay OFF	B+
18 pins	2J	Fail-safe relay	Normal	0-2
18 pins	2J	Fail-safe relay	If malfunction present	B+
18 pins	2L	Warning light	Illuminated	0-3
18 pins	2L	Warning light	Not illuminated	B+
18 pins	2M	ABS wheel-speed sensor — Right front	Vehicle stopped	0	• In DC range, ABS wheel-speed sensor voltage will be approx. 1.0V (with ignition switch ON)
18 pins	2N	ABS wheel-speed sensor — Right front	Wheel turned 1 revolution per second	0.25-1.2
18 pins	2O	ABS wheel-speed sensor — Left front	Vehicle stopped	0
18 pins	2P	ABS wheel-speed sensor — Left front	Wheel turned 1 revolution per second	0.25-1.2
18 pins	2Q	ABS wheel-speed sensor — Left rear	Vehicle stopped	0
18 pins	2R	ABS wheel-speed sensor — Left rear	Wheel turned 1 revolution per second	0.25-1.2
18 pins	2S	ABS wheel-speed sensor — Right rear	Vehicle stopped	0
18 pins	2T	ABS wheel-speed sensor — Right rear	Wheel turned 1 revolution per second	0.25-1.2

18 pins

Terminal2A

Connected toFBS check terminal

ConditionIgnition switch ON

Voltage (V)0

Remark

18 pins

Terminal2B

Connected toTBS check terminal

ConditionNormal mode

Voltage (V)B+

Remark

18 pins

Terminal2B

Connected toTBS check terminal

ConditionDiagnostic mode

Voltage (V)0

Remark

18 pins

Terminal2C

Connected toNot used

Condition—

Voltage (V)—

Remark

18 pins

Terminal2D

Connected toNot used

Condition—

Voltage (V)—

Remark

18 pins

Terminal2E

Connected toNot used

Condition—

Voltage (V)—

Remark

18 pins

Terminal2F

Connected toNot used

ConditionEngine idling

Voltage (V)B+

Remark

18 pins

Terminal2H

Connected toMotor relay

ConditionMotor relay ON

Voltage (V)0-2

Remark• Turn wheel at specified speed to prevent incorrect diagnosis. • Check following terminals of ABS wheel-speed sensor in AC range: 2N-2M (right front) 2O-2P (left front) 2R-2Q (left rear) 2S-2T (right rear)

18 pins

Terminal2H

Connected toMotor relay

ConditionMotor relay OFF

Voltage (V)B+

Remark

18 pins

Terminal2J

Connected toFail-safe relay

ConditionNormal

Voltage (V)0-2

Remark

18 pins

Terminal2J

Connected toFail-safe relay

ConditionIf malfunction present

Voltage (V)B+

Remark

18 pins

Terminal2L

Connected toWarning light

ConditionIlluminated

Voltage (V)0-3

Remark

18 pins

Terminal2L

Connected toWarning light

ConditionNot illuminated

Voltage (V)B+

Remark

18 pins

Terminal2M

Connected toABS wheel-speed sensor — Right front

ConditionVehicle stopped

Voltage (V)0

Remark• In DC range, ABS wheel-speed sensor voltage will be approx. 1.0V (with ignition switch ON)

18 pins

Terminal2N

Connected toABS wheel-speed sensor — Right front

ConditionWheel turned 1 revolution per second

Voltage (V)0.25-1.2

Remark

18 pins

Terminal2O

Connected toABS wheel-speed sensor — Left front

ConditionVehicle stopped

Voltage (V)0

Remark

18 pins

Terminal2P

Connected toABS wheel-speed sensor — Left front

ConditionWheel turned 1 revolution per second

Voltage (V)0.25-1.2

Remark

18 pins

Terminal2Q

Connected toABS wheel-speed sensor — Left rear

ConditionVehicle stopped

Voltage (V)0

Remark

18 pins

Terminal2R

Connected toABS wheel-speed sensor — Left rear

ConditionWheel turned 1 revolution per second

Voltage (V)0.25-1.2

Remark

18 pins

Terminal2S

Connected toABS wheel-speed sensor — Right rear

ConditionVehicle stopped

Voltage (V)0

Remark

18 pins

Terminal2T

Connected toABS wheel-speed sensor — Right rear

ConditionWheel turned 1 revolution per second

Voltage (V)0.25-1.2

Remark

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Check ABS control module

ABS control module connector — 12 pin terminal voltages

ABS control module connector — 18 pin terminal voltages

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