DSC HU/CM INSPECTION


id041500801100

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

2. Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [L8, LF].)

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

Standard (Reference Value)

Terminal

Signal name

Connected to

Measured item

Measured terminal (measured condition)

Standard

Inspection item(s)

A
Ground
(ABS motor)
Ground point
Continuity
A-ground point
Continuity detected
• Wiring harness (A-ground point)
B
Power supply
(ABS motor operation)
Battery
Voltage
Under any condition
B+
• Wiring harness (B-battery)
C
Power supply
(solenoid operation)
Battery
Voltage
Under any condition
B+
• Wiring harness (C-battery)
D
Ground
(DSC system)
Ground point
Continuity
D-ground point
Continuity detected
• Wiring harness (D-ground point)
E
LF wheel-speed sensor (ground)
LF ABS wheel-speed sensor
Continuity
E-LF ABS wheel-speed sensor connector terminal B
Continuity detected
• Wiring harness (E-LF ABS wheel-speed sensor connector terminal B)
F
LF wheel-speed sensor (single)
LF ABS wheel-speed sensor
Continuity
F-LF ABS wheel-speed sensor connector terminal A
Continuity detected
• Wiring harness (F-LF ABS wheel-speed sensor connector terminal A)
G
LR wheel-speed sensor (signal)
LR ABS wheel-speed sensor
Continuity
G-LR ABS wheel-speed sensor connector terminal A
Continuity detected
• Wiring harness (G-LR ABS wheel-speed sensor connector terminal A)
H
LR wheel-speed sensor (ground)
LR ABS wheel-speed sensor
Continuity
H-LR ABS wheel-speed sensor connector terminal B
Continuity detected
• Wiring harness (H-LR ABS wheel-speed sensor connector terminal B)
I
RR wheel-speed (signal)
RR ABS wheel-speed sensor
Continuity
I-RR ABS wheel-speed sensor connector terminal A
Continuity detected
• Wiring harness (I-RR ABS wheel-speed sensor connector terminal A)
J
Power supply
(system)
Ignition switch
Voltage
Ignition switch at ON
B+
• Wiring harness (J-ignition switch)
Ignition switch is off.
1 V or less
-
K
-
-
-
-
-
-
L
RR wheel-speed sensor (ground)
RR ABS wheel-speed sensor
Continuity
L-RR ABS wheel-speed sensor connector terminal B
Continuity detected
• Wiring harness (L-RR ABS wheel-speed sensor connector terminal B)
M
RF wheel-speed sensor (signal)
RF ABS wheel-speed sensor
Continuity
M-RF ABS wheel-speed sensor connector terminal A
Continuity detected
• Wiring harness (M-RF ABS wheel-speed sensor connector terminal A)
N
Brake switch
Brake switch
Voltage
N-ground point
(Brake pedal
depressed)
B+
• Wiring harness (N-brake switch)
• Brake switch
N-ground point
(Brake pedal not depressed)
1 V or less
-
O
RF wheel-speed sensor (ground)
RF ABS wheel-speed sensor
Continuity
O-RF ABS wheel-speed sensor connector terminal B
Continuity detected
• Wiring harness (O-RF ABS wheel-speed sensor connector terminal B)
P
DSC OFF switch
DSC OFF switch
Continuity
P-DSC OFF switch connector terminal A (L.H.D) or C (R.H.D.)
Continuity detected
• Wiring harness (P-DSC OFF switch connector terminal A (L.H.D.) or C (R.H.D.))
Q
-
-
-
-
-
-
R
-
-
-
-
-
-
S
-
-
-
-
-
-
T
-
-
-
-
-
-
U
-
-
-
-
-
-
V
-
-
-
-
-
-
W
CAN_L
DLC-2 (CAN_L)
Continuity
W-DLC-2 terminal CAN_L
Continuity detected
• Wiring harness (W-DLC-2 terminal CAN_L)
X
CAN_H
DLC-2 (CAN_H)
Continuity
X-DLC-2 terminal CAN_H
Continuity detected
• Wiring harness (X-DLC-2 terminal CAN_H)
Y
Ground (combined sensor)
Combined sensor
Continuity
Y-combined sensor connector terminal F
Continuity detected
• Wiring harness (Y-combined sensor connector terminal F)
Z
-
-
-
-
-
-
AA
Yaw rate
(signal)
Combined sensor
Continuity
AA-combined sensor connector terminal B
Continuity detected
• Wiring harness (AA-combined sensor connector terminal B)
AB
Yaw rate (test signal)
Combined sensor
Continuity
AB-combined sensor connector terminal C
Continuity detected
• Wiring harness (AB-combined sensor connector terminal C)
AC
-
-
-
-
-
-
AD
-
-
-
-
-
-
AE
Yaw rate (reference signal)
Combined sensor
Continuity
AE-combined sensor connector terminal A
Continuity detected
• Wiring harness (AE-combined sensor connector terminal A)
AF
-
-
-
-
-
-
AG
-
-
-
-
-
-
AH
-
-
-
-
-
-
AI
Lateral-G (signal)
Combined sensor
Continuity
AI-combined sensor connector terminal D
Continuity detected
• Wiring harness (AI-combined sensor connector terminal D)
AJ
-
-
-
-
-
-
AK
-
-
-
-
-
-
AL
-
-
-
-
-
-
AM
-
-
-
-
-
-
AN
-
-
-
-
-
-
AO
-
-
-
-
-
-
AP
-
-
-
-
-
-
AQ
-
-
-
-
-
-
AR
-
-
-
-
-
-
AS
-
-
-
-
-
-
AT
-
-
-
-
-
-