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:
Power Outer Mirror Switch Inspection
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Inner garnish.
b. Front door trim.
c. Switch panel.
3. Verify that the continuity between the power outer mirror switch terminals
is as indicated in the table.
If not as indicated in the table, replace t ...
Identification Numbers
Vehicle Identification Number
The vehicle identification number legally
identifies your vehicle. The number is on a
plate attached to the cowl panel located on
the left corner of the dashboard. This plate
can easily be seen through the windshield
Motor Vehicle Safety Standard Label (U.S.A. ...
Heated Oxygen Sensor (HO2 S) Inspection [Mzr 2.0, Mzr 2.5]
HO2S Inspection
1. Connect the M-MDS to the DLC-2.
2. Switch the ignition to ON.
3. Warm up the engine to normal operating temperature.
4. Access the following PIDs using the M-MDS..
VSS (Vehicle speed)
RPM (Engine speed)
O2S12 (HO2S output voltage)
5. Drive ...
