Mazda 3 Service Manual: Blind Spot Monitoring (Bsm) Control Module Inspection
1. Disconnect the negative battery cable.
2. Remove the rear combination light..
3. Remove the rear bumper..
4. Connect the negative battery cable..
5. Measure the voltage at each terminal is as indicated in the Terminal Voltage Tables.
-
If the voltage or continuity is not as specified in the Terminal Voltage Table, inspect the parts under “Inspection item (s)”.
-
If the system does not operate normally even though the related wiring harness and short cord are normal, replace the BSM control module.
Terminal Voltage Table (Reference)
BSM control module (LH)
|
Terminal |
Signal |
Connected to |
Measurement condition |
Voltage (V) |
Inspection item (s) |
|
|
A |
Ground |
Body ground |
Under any condition |
1.0 or less |
|
|
|
B |
Power supply |
METER 15 A fuse |
Switch the ignition ON |
B+ |
|
|
|
Switch the ignition OFF (LOCK) |
1.0 or less |
|||||
|
D |
BSM indicator light (LH) signal |
BSM indicator light (LH) |
Switch the ignition to ON |
LED off |
1.0 or less |
|
|
LED on |
B+ |
|||||
|
E |
Ground |
Body ground |
Under any condition |
1.0 or less |
|
|
|
G |
CAN_L |
CAN system related module |
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. |
|||
|
H |
CAN_H |
CAN system related module |
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. |
|||
BSM control module (RH)
|
Terminal |
Signal |
Connected to |
Measurement condition |
Voltage (V) |
Inspection item (s) |
|
|
A |
Ground |
Body ground |
Under any condition |
1.0 or less |
|
|
|
B |
Power supply |
METER 15 A fuse |
Switch the ignition ON |
B+ |
|
|
|
Switch the ignition OFF (LOCK) |
1.0 or less |
|||||
|
D |
BSM indicator light (RH) signal |
BSM indicator light (RH) |
Switch the ignition to ON |
LED off |
1.0 or less |
|
|
LED on |
B+ |
|||||
|
E |
BSM OFF switch signal |
BSM OFF switch |
Switch the ignition to ON |
BSM switch pressed |
1.0 or less |
|
|
BSM switch not pressed |
B+ |
|||||
|
G |
CAN_L |
CAN system related module |
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. |
|||
|
H |
CAN_H |
CAN system related module |
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. |
|||
Blind Spot Monitoring (Bsm) Bracket Removal/Installation
1. Disconnect the negative battery cable..
2. Remove the rear combination light..
3. Remove the rear bumper..
4. Remove the BSM control module..
5. Remove the nuts.
6. Remove the clip.
...
Blind Spot Monitoring (Bsm) Control Module Removal/Installation
CAUTION:
If the BSM control modules are installed with the left and right modules
reversed, a DTC will be displayed and system will enter the fail-safe function.
Therefore, confirm that ...
Other materials:
Call interrupt
A call can be interrupted to receive an
incoming call from a third party.
Switch to a new incoming call using the
following methods.
Method 1
Press the pick-up button.
Prompt: “Swapping calls.”
Method 2
Press the talk button with a short press.
Say: [Beep] “Swap calls”
...
Passenger Compartment Temperature Sensor Removal/Installation [Full Auto Air
Conditioner]
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Front scuff plate.
b. Front side trim.
c. Dashboard under cover.
d. Upper panel.
e. Shift lever knob (MTX).
f. Selector lever knob (ATX).
g. Shift panel.
h. Side wall.
i. Console.
j. Hood release lever ...
Electrical System
Electrical Parts
Battery cable
Before disconnecting connectors or removing electrical parts, disconnect
the negative battery cable.
Wiring Harness
To remove the wiring harness from the clip in the engine room, pry up the
hook of the clip using a flathead screwdriver. ...
