Mazda 3 Service Manual: ABS HU/CM Inspection
1. Disconnect the ABS HU/CM connector..
2. Connect the negative battery cable..
3. Attach the tester lead to the ABS HU/CM wiring harness-side connector and inspect the voltage, continuity, or resistance according to the standard (reference value) in the table below.
Standard (reference)
|
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 |
|
|
C |
RR wheel-speed (-) |
RR ABS wheel-speed sensor |
Continuity |
C–RR ABS wheel-speed sensor connector terminal B |
Continuity detected |
|
|
D |
− |
− |
− |
− |
− |
− |
|
E |
RR wheel-speed (+) |
RR ABS wheel-speed sensor |
Continuity |
E–RR ABS wheel-speed sensor connector terminal A |
Continuity detected |
|
|
F |
− |
− |
− |
− |
− |
− |
|
G |
− |
− |
− |
− |
− |
− |
|
H |
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. |
|||
|
I |
LF wheel-speed (+) |
LF ABS wheel speed sensor |
Continuity |
I–LF ABS wheel-speed sensor connector terminal A |
Continuity detected |
|
|
J |
− |
− |
− |
− |
− |
− |
|
K |
LF wheel-speed (-) |
ABS wheel-speed sensor (LF) |
Continuity |
K–LF ABS wheel-speed sensor connector terminal B |
Continuity detected |
|
|
L |
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. |
|||
|
M |
− |
− |
− |
− |
− |
− |
|
N |
Power supply (System) |
Ignition switch or IG1 relay |
Voltage |
Switch the ignition to ON |
B+ |
|
|
Switch the ignition to off |
1 V or less |
|||||
|
O |
RF wheel-speed (-) |
RF ABS wheel-speed sensor |
Continuity |
O–RF ABS wheel-speed sensor terminal B |
Continuity detected |
|
|
P |
− |
− |
− |
− |
− |
− |
|
Q |
RF wheel-speed (+) |
RF ABS wheel-speed sensor |
Continuity |
Q–RF ABS wheel-speed sensor terminal A |
Continuity detected |
|
|
R |
− |
− |
− |
− |
− |
− |
|
S |
− |
− |
− |
− |
− |
− |
|
T |
− |
− |
− |
− |
− |
− |
|
U |
LR wheel-speed (+) |
LR ABS wheel-speed sensor |
Continuity |
U–LR ABS wheel-speed sensor connector terminal A |
Continuity detected |
|
|
V |
− |
− |
− |
− |
− |
− |
|
W |
LR wheel-speed (-) |
LR ABS wheel-speed sensor |
Continuity |
W–LR ABS wheel-speed sensor connector terminal B |
Continuity detected |
|
|
X |
− |
− |
− |
− |
− |
− |
|
Y |
Power supply (Solenoid operation, ABS motor operation) |
Battery |
Voltage |
Under any condition |
B+ |
|
|
Z |
− |
− |
− |
− |
− |
− |
ABS
...
ABS HU/CM Removal/Installation
WARNING:
If the ABS HU/CM configuration is not completed, it could result in an unexpected
accident due to the ABS being inoperative. If the ABS HU/CM or ABS CM is replaced,
always use t ...
Other materials:
Abbreviations
ABS
Antilock Brake System
ABDC
After Bottom Dead Center
ACC
Accessories
ALC
Auto Level Control
ALR
Automatic Locking Retractor
AT
Automa ...
Fuel Gauge Sender Unit Inspection
MZR 2.3 DISI Turbo, SKYACTIV-G 2.0
NOTE:
The fuel gauge sender unit is integrated with the fuel pump unit.
1. Disconnect the negative battery cable..
2. Remove the rear seat cushion..
3. Remove the fuel pump unit..
4. Verify that the resistance between terminals A and C of the f ...
Manual Transaxle Shift Pattern
The shift pattern of the transaxle is
conventional, as shown.
Depress the clutch pedal all the way down
while shifting; then release it slowly.
Your vehicle is equipped with a device to
prevent shifting to R (reverse) by mistake.
Push the shift lever downward and shift
to R.
...