DSC HU/CM INSPECTION


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1.  Disconnect the DSC HU/CM connector.

2.  Connect the negative battery cable.

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
Ground (system)
Ground point
Continuity
A—ground point
Continuity detected
•  Wiring harness
(A—ground point)
B
Ground
(ABS motor)
Ground point
Continuity
B—ground point
Continuity detected
•  Wiring harness
(B—ground point)
C
D
CAN_L
DLC-2
(CAN_L)
Continuity
D—DLC-2 terminal CAN_L
Continuity detected
•  D—DLC-2 terminal CAN_L
E
F
LF wheel-speed sensor (ground)
LF wheel-speed sensor
Continuity
F—LF ABS wheel-speed sensor terminal A
Continuity detected
•  Wiring harness (F—LF ABS wheel-speed sensor terminal A)
G
H
CAN2_H
Combined sensor
Continuity
H—combined sensor terminal B
Continuity detected
•  Wiring harness (H—combined sensor terminal B)
I
LF wheel-speed sensor (single)
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
K
L
M
N
O
RR wheel-speed (signal)
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
CAN_H
DLC-2
(CAN_H)
Continuity
P—DLC-2 terminal CAN_H
Continuity detected
•  Wiring harness (P—DLC-2 terminal CAN_H)
Q
R
RR wheel-speed (ground)
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
CAN2_L
Combined sensor
Continuity
T—combined sensor terminal A
Continuity detected
•  Wiring harness (T—combined sensor terminal A)
U
V
W
X
Y
Z
AA
AB
Sensor power supply
Combined sensor, steering angle sensor
Continuity
AB—combined sensor terminal D
AB—steering angle sensor terminal A
Continuity detected
•  Wiring harness (AB—combined sensor terminal D)
•  Wiring harness (AB—steering angle sensor terminal A)
AC
AD
DSC OFF switch
DSC OFF switch
Continuity
AD—DSC OFF switch
Continuity detected
•  Wiring harness (AD—DSC OFF switch)
AE
Steering angle sensor (signal B)
Steering angle sensor
Continuity
AE—steering angle sensor terminal C
Continuity detected
•  Wiring harness (AE—steering angle sensor terminal C)
AF
AG
LR wheel-speed (ground)
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
Sensor ground
Combined sensor, steering angle sensor
Continuity
AH—combined sensor terminal E
AH—steering angle sensor terminal D
Continuity detected
•  Wiring harness (AH—combined sensor terminal E)
•  Wiring harness (AH—steering angle sensor terminal D)
AI
AJ
LR wheel-speed (signal)
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
Power supply (system)
Ignition switch
Voltage
The ignition switch is at the ON position.
B+
•  Wiring harness (AK—ignition switch)
The ignition switch is off.
1 V or less
AL
AM
AN
Steering angle sensor (signal A)
Steering angle sensor
Continuity
AN—steering angle sensor terminal B
Continuity detected
•  Wiring harness (AN—steering angle sensor terminal B)
AO
AP
RF wheel-speed (signal)
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 (ground)
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
Voltage
Under any condition
B+
•  Wiring harness
(AT—battery)
AU
Power supply
(solenoid operation)
Battery
Voltage
Under any condition
B+
•  Wiring harness
(AU—battery)