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ac9wzw00004944
DSC HU/CM INSPECTION
id041500801100
1. Disconnect the DSC HU/CM connector. (See DSC HU/CM REMOVAL/INSTALLATION.)
2. Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)
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)
ac9wzw00004944
|
|
Terminal |
Signal name |
Connected to |
Measured item |
Measured terminal (measurement condition) |
Standard |
Inspection item(s) |
|---|---|---|---|---|---|---|
|
A
|
Power supply
|
Battery
|
Voltage
|
Under any condition
|
B+
|
• Wiring harness (A—battery)
|
|
(solenoid operation)
|
||||||
|
B
|
Power supply
|
Battery
|
Voltage
|
Under any condition
|
B+
|
• Wiring harness (B—battery)
|
|
(motor operation)
|
||||||
|
C
|
CAN_H
|
CAN module
|
This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.
|
|||
|
D
|
CAN_L
|
CAN module
|
This terminal is used for communication and cannot be used for malfunction determination during terminal voltage inspection. Perform a DTC inspection.
|
|||
|
E
|
—
|
—
|
—
|
—
|
—
|
—
|
|
F
|
—
|
—
|
—
|
—
|
—
|
—
|
|
G
|
—
|
—
|
—
|
—
|
—
|
—
|
|
H
|
—
|
—
|
—
|
—
|
—
|
—
|
|
I
|
Power supply (system)
|
Ignition switch
|
Voltage
|
Ignition switched ON (engine off).
|
B+
|
• Wiring harness (I—ignition switch)
|
|
Switch the ignition OFF.
|
1 V or less
|
|||||
|
J
|
RF wheel-speed (+)
|
RF ABS wheel-speed sensor
|
Continuity
|
J—RF ABS wheel-speed sensor terminal A
|
Continuity detected
|
• Wiring harness (J—RF ABS wheel-speed sensor terminal A)
|
|
K
|
RF wheel-speed (-)
|
RF ABS wheel-speed sensor
|
Continuity
|
K—RF ABS wheel-speed sensor terminal B
|
Continuity detected
|
• Wiring harness (K—RF ABS wheel-speed sensor terminal B)
|
|
L
|
RR wheel-speed (-)
|
RR ABS wheel-speed sensor
|
Continuity
|
L—RR ABS wheel-speed sensor terminal D
|
Continuity detected
|
• Wiring harness (L—RR ABS wheel-speed sensor terminal D)
|
|
M
|
RR wheel-speed (+)
|
RR ABS wheel-speed sensor
|
Continuity
|
M—RR ABS wheel-speed sensor terminal B
|
Continuity detected
|
• Wiring harness (M—RR ABS wheel-speed sensor terminal B)
|
|
N
|
—
|
—
|
—
|
—
|
—
|
—
|
|
O
|
Brake light
|
Brake light relay or brake light unit
|
Voltage
|
Brake pedal depressed
|
B+
|
• Wiring harness (O—brake light relay or brake light unit)
|
|
Brake pedal released
|
1 V or less
|
|||||
|
P
|
LR wheel-speed (-)
|
LR wheel-speed sensor
|
Continuity
|
P—LR ABS wheel-speed sensor terminal D
|
Continuity detected
|
• Wiring harness (P—LR ABS wheel-speed sensor terminal D)
|
|
Q
|
—
|
—
|
—
|
—
|
—
|
—
|
|
R
|
LR wheel-speed (+)
|
LR ABS wheel-speed sensor
|
Continuity
|
R—LR ABS wheel-speed sensor terminal B
|
Continuity detected
|
• Wiring harness (R—LR ABS wheel-speed sensor terminal B)
|
|
S
|
LF wheel-speed sensor (+)
|
LF ABS wheel-speed sensor
|
Continuity
|
S—LF ABS wheel-speed sensor terminal A
|
Continuity detected
|
• Wiring harness S—LF ABS wheel-speed sensor terminal A)
|
|
T
|
—
|
—
|
—
|
—
|
—
|
—
|
|
U
|
—
|
—
|
—
|
—
|
—
|
—
|
|
V
|
—
|
—
|
—
|
—
|
—
|
—
|
|
W
|
LF wheel-speed sensor (-)
|
LF wheel-speed sensor
|
Continuity
|
W—LF ABS wheel-speed sensor terminal B
|
Continuity detected
|
• Wiring harness (W—LF ABS wheel-speed sensor terminal B)
|
|
X
|
—
|
—
|
—
|
—
|
—
|
—
|
|
Y
|
—
|
—
|
—
|
—
|
—
|
—
|
|
Z
|
—
|
—
|
—
|
—
|
—
|
—
|
|
AA
|
—
|
—
|
—
|
—
|
—
|
—
|
|
AB
|
—
|
—
|
—
|
—
|
—
|
—
|
|
AC
|
—
|
—
|
—
|
—
|
—
|
—
|
|
AD
|
—
|
—
|
—
|
—
|
—
|
—
|
|
AE
|
—
|
—
|
—
|
—
|
—
|
—
|
|
AF
|
—
|
—
|
—
|
—
|
—
|
—
|
|
AG
|
—
|
—
|
—
|
—
|
—
|
—
|
|
AH
|
—
|
—
|
—
|
—
|
—
|
—
|
|
AI
|
—
|
—
|
—
|
—
|
—
|
—
|
|
AJ
|
—
|
—
|
—
|
—
|
—
|
—
|
|
AK
|
Ground
|
Ground point
|
Continuity
|
AK—ground point
|
Continuity detected
|
• Wiring harness (AK—ground point)
|
|
AL
|
Ground
|
Ground point
|
Continuity
|
AL—ground point
|
Continuity detected
|
• Wiring harness (AL—ground point)
|