DSC HU/CM INSPECTION

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1. Disconnect the DSC HU/CM connector. (See DSC HU/CM REMOVAL/INSTALLATION.)

2. Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR 1.5, MZR 1.6].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.3 DISI Turbo].) (See BATTERY REMOVAL/INSTALLATION [MZ-CD 1.6].) (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].)

3. Attach the tester lead to the DSC HU/CM wiring harness-side connector and inspect voltage, continuity, or resistance according to the standard (reference) on the table.

Standard (Reference)

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Terminal

Signal name

Connected to

Measured item

Measured terminal (measurement condition)

Standard

Inspection item(s)

A

—

—

—

—

—

—

B

Ground

Ground point

Continuity

B—ground point

Continuity detected

•  Wiring harness (B—ground point)

C

—

—

—

—

—

—

D

—

—

—

—

—

—

E

—

—

—

—

—

—

F

LF wheel-speed sensor (-)

LF wheel-speed sensor

Continuity

F—LF ABS wheel-speed sensor terminal B

Continuity detected

•  Wiring harness (F—LF ABS wheel-speed sensor terminal B)

G

—

—

—

—

—

—

H

—

—

—

—

—

—

I

LF wheel-speed sensor (+)

LF ABS wheel-speed sensor

Continuity

I—LF ABS wheel-speed sensor terminal A

Continuity detected

•  Wiring harness (I—LF ABS wheel-speed sensor terminal A)

J

CAN_L

DLC-2 (CAN_L)

This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.

K

—

—

—

—

—

—

L

—

—

—

—

—

—

M

CAN_H

DLC-2 (CAN_H)

This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.

N

—

—

—

—

—

—

O

RR wheel-speed (+)

RR ABS wheel-speed sensor

Continuity

O—RR ABS wheel-speed sensor terminal A

Continuity detected

•  Wiring harness (O—RR ABS wheel-speed sensor terminal A)

P

—

—

—

—

—

—

Q

—

—

—

—

—

—

R

RR wheel-speed (-)

RR ABS wheel-speed sensor

Continuity

R—RR ABS wheel-speed sensor terminal B

Continuity detected

•  Wiring harness (R—RR ABS wheel-speed sensor terminal B)

S

—

—

—

—

—

—

T

—

—

—

—

—

—

U

—

—

—

—

—

—

V

—

—

—

—

—

—

W

—

—

—

—

—

—

X

—

—

—

—

—

—

Y

Power supply (system)

Ignition switch or IG1 relay^*1

DC-DC converter^*2

Voltage

Switch the ignition to ON.

B+

•  Wiring harness (Y—ignition switch or IG1 relay)^*1

•  Wiring harness (Y—DC-DC converter)^*2

Switch the ignition to off.

1 V or less

Z

—

—

—

—

—

—

AA

—

—

—

—

—

—

AB

—

—

—

—

—

—

AC

—

—

—

—

—

—

AD

—

—

—

—

—

—

AE

—

—

—

—

—

—

AF

—

—

—

—

—

—

AG

LR wheel-speed (-)

LR wheel-speed sensor

Continuity

AG—LR ABS wheel-speed sensor terminal B

Continuity detected

•  Wiring harness (AG—LR ABS wheel-speed sensor terminal B)

AH

—

—

—

—

—

—

AI

—

—

—

—

—

—

AJ

LR wheel-speed (+)

LR ABS wheel-speed sensor

Continuity

AJ—LR ABS wheel-speed sensor terminal A

Continuity detected

•  Wiring harness (AJ—LR ABS wheel-speed sensor terminal A)

AK

DSC OFF switch

DSC OFF switch

Continuity

AK—DSC OFF switch terminal B (L.H.D) or H (R.H.D.)

Continuity detected

•  Wiring harness (AK—DSC OFF switch terminal B (L.H.D) or H (R.H.D.))

AL

CAN2_L

SAS control module

This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.

AM

—

—

—

—

—

—

AN

—

—

—

—

—

—

AO

CAN2_H

SAS control module

This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.

AP

RF wheel-speed (+)

RF ABS wheel-speed sensor

Continuity

AP—RF ABS wheel-speed sensor terminal A

Continuity detected

•  Wiring harness (AP—RF ABS wheel-speed sensor terminal A)

AQ

—

—

—

—

—

—

AR

—

—

—

—

—

—

AS

RF wheel-speed (-)

RF ABS wheel-speed sensor

Continuity

AS—RF ABS wheel-speed sensor terminal B

Continuity detected

•  Wiring harness (AS—RF ABS wheel-speed sensor terminal B)

AT

Power supply

(ABS motor operation)

Battery^*3 or main battery^*4

Voltage

Under any condition

B+

•  Wiring harness (AT—battery^*3 or main battery^*4)

AU

Power supply

(solenoid operation)

Battery^*3 or main battery^*4

Voltage

Under any condition

B+

•  Wiring harness (AU—battery^*3 or main battery^*4)

Terminal	Signal name	Connected to	Measured item	Measured terminal (measurement condition)	Standard	Inspection item(s)
A	—	—	—	—	—	—
B	Ground	Ground point	Continuity	B—ground point	Continuity detected	• Wiring harness (B—ground point)
C	—	—	—	—	—	—
D	—	—	—	—	—	—
E	—	—	—	—	—	—
F	LF wheel-speed sensor (-)	LF wheel-speed sensor	Continuity	F—LF ABS wheel-speed sensor terminal B	Continuity detected	• Wiring harness (F—LF ABS wheel-speed sensor terminal B)
G	—	—	—	—	—	—
H	—	—	—	—	—	—
I	LF wheel-speed sensor (+)	LF ABS wheel-speed sensor	Continuity	I—LF ABS wheel-speed sensor terminal A	Continuity detected	• Wiring harness (I—LF ABS wheel-speed sensor terminal A)
J	CAN_L	DLC-2 (CAN_L)	This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.
K	—	—	—	—	—	—
L	—	—	—	—	—	—
M	CAN_H	DLC-2 (CAN_H)	This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.
N	—	—	—	—	—	—
O	RR wheel-speed (+)	RR ABS wheel-speed sensor	Continuity	O—RR ABS wheel-speed sensor terminal A	Continuity detected	• Wiring harness (O—RR ABS wheel-speed sensor terminal A)
P	—	—	—	—	—	—
Q	—	—	—	—	—	—
R	RR wheel-speed (-)	RR ABS wheel-speed sensor	Continuity	R—RR ABS wheel-speed sensor terminal B	Continuity detected	• Wiring harness (R—RR ABS wheel-speed sensor terminal B)
S	—	—	—	—	—	—
T	—	—	—	—	—	—
U	—	—	—	—	—	—
V	—	—	—	—	—	—
W	—	—	—	—	—	—
X	—	—	—	—	—	—
Y	Power supply (system)	Ignition switch or IG1 relay^1 DC-DC converter^2	Voltage	Switch the ignition to ON.	B+	• Wiring harness (Y—ignition switch or IG1 relay)^1 • Wiring harness (Y—DC-DC converter)^2
Switch the ignition to off.	1 V or less
Z	—	—	—	—	—	—
AA	—	—	—	—	—	—
AB	—	—	—	—	—	—
AC	—	—	—	—	—	—
AD	—	—	—	—	—	—
AE	—	—	—	—	—	—
AF	—	—	—	—	—	—
AG	LR wheel-speed (-)	LR wheel-speed sensor	Continuity	AG—LR ABS wheel-speed sensor terminal B	Continuity detected	• Wiring harness (AG—LR ABS wheel-speed sensor terminal B)
AH	—	—	—	—	—	—
AI	—	—	—	—	—	—
AJ	LR wheel-speed (+)	LR ABS wheel-speed sensor	Continuity	AJ—LR ABS wheel-speed sensor terminal A	Continuity detected	• Wiring harness (AJ—LR ABS wheel-speed sensor terminal A)
AK	DSC OFF switch	DSC OFF switch	Continuity	AK—DSC OFF switch terminal B (L.H.D) or H (R.H.D.)	Continuity detected	• Wiring harness (AK—DSC OFF switch terminal B (L.H.D) or H (R.H.D.))
AL	CAN2_L	SAS control module	This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.
AM	—	—	—	—	—	—
AN	—	—	—	—	—	—
AO	CAN2_H	SAS control module	This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.
AP	RF wheel-speed (+)	RF ABS wheel-speed sensor	Continuity	AP—RF ABS wheel-speed sensor terminal A	Continuity detected	• Wiring harness (AP—RF ABS wheel-speed sensor terminal A)
AQ	—	—	—	—	—	—
AR	—	—	—	—	—	—
AS	RF wheel-speed (-)	RF ABS wheel-speed sensor	Continuity	AS—RF ABS wheel-speed sensor terminal B	Continuity detected	• Wiring harness (AS—RF ABS wheel-speed sensor terminal B)
AT	Power supply (ABS motor operation)	Battery^3 or main battery^4	Voltage	Under any condition	B+	• Wiring harness (AT—battery^3 or main battery^4)
AU	Power supply (solenoid operation)	Battery^3 or main battery^4	Voltage	Under any condition	B+	• Wiring harness (AU—battery^3 or main battery^4)

*1 :Except SKYACTIV-G 2.0

*2 :SKYACTIV-G 2.0

*3 :Except MZR 2.0 DISI i-stop

*4 :MZR 2.0 DISI i-stop