Mazda CX-5 Service & Repair 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. Verify that the voltages of each of the terminals are as indicated in the terminal voltage table (reference).
-
If the voltage is not as specified in the terminal voltage table (reference), inspect the parts under Inspection item(s).
-
If the system does not operate normally even though the inspection items are normal, replace the BSM control module (RH) or BSM control module (LH).
Terminal Voltage Table (Reference)
BSM control module (RH)
|
Terminal |
Signal name |
Connected to |
Measurement conditions |
Voltage (V) |
Inspection item(s) |
|
|
A |
Ground |
Body ground |
Under any condition |
1.0 or less |
|
|
|
B |
Power position (IG1) |
IG relay |
Ignition switched ON (Engine off or on) |
B+ |
|
|
|
Ignition switched off (LOCK) or ACC |
1.0 or less |
|||||
|
C |
— |
— |
— |
— |
— |
|
|
D |
BSM indicator light (RH) signal |
BSM indicator light (RH) |
Turn off BSM indicator light using BSM system simulation WRN_IND_R |
1.0 or less |
|
|
|
Turn on BSM indicator light using rear vehicle monitoring system simulation WRN_IND_R |
B+ |
|||||
|
E |
— |
— |
— |
— |
— |
|
|
F |
— |
— |
— |
— |
— |
|
|
G |
MS-CAN_L |
Related module |
Because this terminal is for communication, determination using terminal voltage inspection is not possible. |
|||
|
H |
MS-CAN_H |
Related module |
Because this terminal is for communication, determination using terminal voltage inspection is not possible. |
|||
BSM control module (LH)
|
Terminal |
Signal name |
Connected to |
Measurement conditions |
Voltage (V) |
Inspection item(s) |
|
|
A |
Ground |
Body ground |
Under any condition |
1.0 or less |
|
|
|
B |
Power position (1G1) |
IG relay |
Ignition switched ON (engine off or on) |
B+ |
|
|
|
Ignition switched off (LOCK) or ACC |
1.0 or less |
|||||
|
C |
— |
— |
— |
— |
— |
|
|
D |
BSM indicator light (LH) signal |
BSM indicator light (LH) |
Turn off BSM indicator light using BSM system simulation WRN_IND_L |
1.0 or less |
|
|
|
Turn on BSM indicator light using rear vehicle monitoring system simulation WRN_IND_L |
B+ |
|||||
|
E |
Ground |
Body ground |
Under any condition |
1.0 or less |
|
|
|
F |
— |
— |
— |
— |
— |
|
|
G |
MS-CAN_L |
Related module |
Because this terminal is for communication, determination using terminal voltage inspection is not possible. |
|||
|
H |
MS-CAN_H |
Related module |
Because this terminal is for communication, determination using terminal voltage inspection is not possible. |
|||
Blind Spot Monitoring (Bsm) Control Module
Purpose
Controls the blind spot monitoring (BSM) system.
Function
The BSM control module emits microwaves to detect an oncoming vehicle's position
and speed information via ...
Blind Spot Monitoring (Bsm) Control Module Removal/Installation
1. Disconnect the negative battery cable..
2. Remove the rear combination light..
3. Remove the rear bumper..
4. Disconnect the connector.
5. Remove the nuts.
6. Remove the BSM control m ...
Other materials:
HomeLink Wireless Control System
NOTE
HomeLink and HomeLink house are registered trademarks of Johnson Controls.
The HomeLink system replaces up to 3 hand-held transmitters with a single builtin
component in the auto-dimming mirror.
Pressing the HomeLink button on the auto-dimming mirror activates garage doors,
gates and oth ...
Liftgate Recess Removal/Installation
1. Insert a tape-wrapped flathead screwdriver in the position indicated by the
arrow in the figure and detach hooks A.
2. Remove the liftgate recess in the direction of the arrow shown in the figure
avoiding hooks B.
3. Install in the reverse order of removal. ...
Key Cylinder Switch
Purpose
The switch turns on/off in conjunction with the front door key cylinder lock/unlock
and the rear body control module (RBCM) detects the key cylinder operation condition
by the change in the voltage.
Function
The key cylinder switch contact point changes in conjuncti ...
