ON-BOARD DIAGNOSTIC [BLIND SPOT MONITORING (BSM) SYSTEM]

id092200021846


Outline

•  The on-board diagnostic function consists of the following functions: a malfunction detection function, which detects overall malfunctions in the BSM control module-related parts; a memory function, which stores detected DTCs; a display function, which indicates malfunction locations and status via DTC output; and a PID/data monitoring function, which reads out specific input/output signals and verifies the input/output condition.
•  Using the Mazda Modular Diagnostic System (M-MDS), DTCs can be read out and deleted, and the PID/data monitoring function can be activated.

Malfunction Detection Function

•  Detects malfunctions in input/output signals.
•  If a malfunction occurs, the BSM control module (RH) records the malfunction as a DTC. A recorded DTC can be read by the Mazda Modular Diagnostic System (M-MDS).

DTC table

BSM control module (LH)

×: Applicable
—: Not applicable

DTC No.

BSM OFF indicator light

Description

Fail-safe function

Drive cycle

Self test type*1

Memory function
B118C:11
Flash
BSM indicator light (LH) circuit malfunction
×
—
C, D
×
B118C:15
Flash
BSM indicator light (LH) circuit malfunction
×
—
C, D
×
U0001:88
Flash
Module communication error (HS-CAN)
×
—
C
×
U0100:00
Flash
Communication error with PCM
×
—
C
×
U0131:00
Flash
Communication error with EPS control module
×
—
C
×
U0155:00
Flash
Communication error with instrument cluster
×
—
C
×
U0214:00
Flash
Communication error with start stop unit
×
—
C
×
U0233:00
Flash
Communication error with BSM control module (RH)
×
—
C
×
U0401:68
Flash
Error signal received from PCM
×
—
C
×
U0420:68
Flash
Error signal received from EPS control module
×
—
C
×
U0423:68
Flash
Error signal received from instrument cluster
×
—
C
×
U0515:68
Flash
Error signal received from start stop unit
×
—
C
×
U0534:68
Flash
Error signal received from BSM control module (RH)
×
—
C
×
U3000:01
Flash
Electrical malfunction inside BSM control module
×
—
C, D
×
U3000:09
Flash
BSM control module internal malfunction
×
—
C, D
×
U3000:4A
—
BSM control module (LH) assembly malfunction
—
—
C
×
U3000:97
—
Radar performance malfunction
—
—
C
×
U3003:16
Flash
BSM control module (LH) low power supply voltage input
×
—
C, D
×
U3003:17
Flash
BSM control module (LH) high power supply voltage input
×
—
C, D
×

*1  :C: CMDTC self test, D:ODDTC self test

BSM Control Module (RH)

×: Applicable
—: Not applicable

DTC No.

BSM OFF indicator light

Description

Fail-safe function

Drive cycle

Self test type*1

Memory function
B118D:11
Flash
BSM indicator light (RH) circuit malfunction
×
—
C, D
×
B118D:15
Flash
BSM indicator light (RH) circuit malfunction
×
—
C, D
×
U0001:88
Flash
Module communication error (HS-CAN)
×
—
C
×
U0100:00
Flash
Communication error with PCM
×
—
C
×
U0131:00
Flash
Communication error with EPS control module
×
—
C
×
U0155:00
Flash
Communication error with instrument cluster
×
—
C
×
U0214:00
Flash
Communication error with start stop unit
×
—
C
×
U0232:00
Flash
Communication error with BSM control module (LH)
×
—
C
×
U0401:68
Flash
Error signal received from PCM
×
—
C
×
U0420:68
Flash
Error signal received from EPS control module
×
—
C
×
U0423:68
Flash
Error signal received from instrument cluster
×
—
C
×
U0515:68
Flash
Error signal received from start stop unit
×
—
C
×
U0533:68
Flash
Error signal received from BSM control module (LH)
×
—
C
×
U3000:01
Flash
Electrical problem inside BSM control module
×
—
C, D
×
U3000:09
Flash
BSM control module internal malfunction
×
—
C, D
×
U3000:4A
—
BSM control module (RH) assembly malfunction
—
—
C
×
U3000:97
—
Radar performance malfunction
—
—
C
×
U3003:16
Flash
BSM control module (RH) low power supply voltage input
×
—
C, D
×
U3003:17
Flash
BSM control module (RH) high power supply voltage input
×
—
C, D
×

*1  :C: CMDTC self test, D:ODDTC self test


DTC 7-digit code definition

•  When related systems or components have failed, the CM stores the DTC of the malfunctioning part in the CM memory, and allows for the retrieval of the store data using scanning tool when necessary. The DTCs are indicated using seven digits. Each digit indicates the following.
ac5wzn00001568


Status byte for DTC

•  The status byte is the two digits (two digits after hyphen (-)) after the 7-digit DTC.
ac5wzn00002009
•  The status byte is a code which indicates the pending code, current/past malfunction status, or warning illumination status.
•  The status byte can be read by performing a CMDTC self-test using the Mazda Modular Diagnostic System (M-MDS).
•  For details on the status byte, refer to the explanation on the Mazda Modular Diagnostic System (M-MDS) when reading the DTC.


Detection condition for the applicable DTC

BSM control module (LH)

DTC No.

System malfunction location

Detection condition
B118C:11
BSM indicator light (LH) circuit malfunction
While the BSM indicator light (LH) is operated, the BSM control module (LH) monitors the BSM indicator light (LH) load voltage. Increase in the monitored BSM indicator light (LH) load voltage is the specified value or more, and the BSM control module (LH) determined that there is a short to ground in the BSM indicator light (LH) circuit.
B118C:15
BSM indicator light (LH) circuit malfunction
While the BSM indicator light (LH) is operated, the BSM control module (LH) monitors the BSM indicator light (LH) load voltage. Decrease in the BSM indicator light (LH) load voltage is the specified value or less, and the BSM control module (LH) determined that there is a short to power supply or an open circuit in the BSM indicator light (LH) circuit.
U0001:88
Module communication error (HS-CAN)
The BSM control module detected a CAN bus communication line (HS-CAN) malfunction.
U0100:00
Communication error with PCM
The BSM control module could not receive a CAN signal from the PCM.
U0131:00
Communication error with EPS control module
The BSM control module could not receive a CAN signal from the EPS control module.
U0155:00
Communication error with instrument cluster
The BSM control module could not receive a CAN signal from the instrument cluster.
U0214:00
Communication error with start stop unit
The BSM control module could not receive a CAN signal from the start stop unit.
U0233:00
Communication error with BSM control module (RH)
The BSM control module (LH) could not receive a CAN signal from the BSM control module (RH).
U0401:68
Error signal received from PCM
The BSM control module received an error signal from the PCM.
U0420:68
Error signal received from EPS control module
The BSM control module received an error signal from the EPS control module.
U0423:68
Error signal received from instrument cluster
The BSM control module received an error signal from the instrument cluster.
U0515:68
Error signal received from start stop unit
The BSM control module received an error signal from the start stop unit.
U0534:68
Error signal received from BSM control module (RH)
The BSM control module (LH) received an error signal from the BSM control module (RH).
U3000:01
Electrical malfunction inside BSM control module
An electrical malfunction inside BSM control module is detected.
U3000:09
BSM control module internal malfunction
The BSM control module detected a malfunction inside the voltage control oscillator.
U3000:4A
BSM control module assembly malfunction
The left and right BSM control modules are installed in reverse, or an open circuit is detected in the BSM control module circuit.
U3000:97
Radar performance malfunction
•  BSM control module internal radar sensor sensitivity is decreased.
•  BSM control module internal radar sensor axis is deviated.
U3003:16
BSM control module low power supply voltage input (less than 9 V)
BSM control module power supply voltage of less than 9 V is detected for 10 s or more.
U3003:17
BSM control module high power supply voltage input (16 V or more)
BSM control module power supply voltage of 16 V or more is detected for 10 s or more.

BSM Control Module (RH)

DTC No.

System malfunction location

Detection condition
B118D:11
BSM indicator light (RH) circuit malfunction
While the BSM indicator light (RH) is operated, the BSM control module (RH) monitors the BSM indicator light (RH) load voltage. Increase in the monitored BSM indicator light (RH) load voltage is the specified value or more, and the BSM control module (RH) determined that there is a short to ground in the BSM indicator light (RH) circuit.
B118D:15
BSM indicator light (RH) circuit malfunction
While the BSM indicator light (RH) is operated, the BSM control module (RH) monitors the BSM indicator light (RH) load voltage. Decrease in the BSM indicator light (RH) load voltage is the specified value or less, and the BSM control module (RH) determined that there is a short to power supply or an open circuit in the BSM indicator light (RH) circuit.
U0001:88
Module communication error (HS-CAN)
The BSM control module detected a CAN bus communication line (HS-CAN) malfunction.
U0100:00
Communication error with PCM
The BSM control module could not receive a CAN signal from the PCM.
U0131:00
Communication error with EPS control module
The BSM control module could not receive a CAN signal from the EPS control module.
U0155:00
Communication error with instrument cluster
The BSM control module could not receive a CAN signal from the instrument cluster.
U0214:00
Communication error with start stop unit
The BSM control module could not receive a CAN signal from the start stop unit.
U0232:00
Communication error with BSM control module (LH)
The BSM control module (RH) could not receive a CAN signal from the BSM control module (LH).
U0401:68
Error signal received from PCM
The BSM control module received an error signal from the PCM.
U0420:68
Error signal received from EPS control module
The BSM control module received an error signal from the EPS control module.
U0423:68
Error signal received from instrument cluster
The BSM control module received an error signal from the instrument cluster.
U0515:68
Error signal received from start stop unit
The BSM control module received an error signal from the start stop unit.
U0533:68
Error signal received from BSM control module (LH)
The BSM control module (RH) received an error signal from the BSM control module (LH).
U3000:01
Electrical malfunction inside BSM control module
An electrical malfunction inside BSM control module is detected.
U3000:09
BSM control module internal malfunction
The BSM control module detected a malfunction inside the voltage control oscillator.
U3000:4A
BSM control module assembly malfunction
The left and right BSM control modules are installed in reverse, or an open circuit is detected in the BSM control module circuit.
U3000:97
Radar performance malfunction
•  BSM control module internal radar sensor sensitivity is decreased.
•  BSM control module internal radar sensor axis is deviated.
U3003:16
BSM control module low power supply voltage input (less than 9 V)
BSM control module power supply voltage of less than 9 V is detected for 10 s or more.
U3003:17
BSM control module high power supply voltage input (16 V or more)
BSM control module power supply voltage of 16 V or more is detected for 10 s or more.


Data Monitor Function

•  With the PID/data monitor function, input/output signal monitor items set in the BSM control module can be selected and read out in real-time.

PID/data monitor table

BSM control module (LH)

—: Not applicable

PID name

Unit/Status

Data contents

Inspection item(s)
BSM_ST
On/Off
•  On: BSM is operated
•  Off: BSM is not operated
BSM control module (LH)
DTC_CNT
—
Number of DTCs stored in the BSM control module (LH) is displayed.
BSM control module (LH)
SHIFT_R
Not_R/R
ATX:
•  Not_R: Selector lever is in position other than R
•  R: Selector lever is in R position
MTX:
•  Not_R: Shift lever is in position other than reverse
•  R: Shift lever is in reverse position
ATX:
•  Selector lever
MTX:
•  Shift lever
SWA_POS
° (deg)
Displays steering angle signal (estimated absolute angle)
•  Steering wheel in neutral position: Near 0 degrees
•  Steering wheel turned to left: Changes from 0 degrees to positive
•  Steering wheel turned to right: Changes from 0 degrees to negative
•  Perform the DTC inspection for the PCM, DSC HU/CM, and EPS CM, and if any DTC is displayed, repair the malfunctioning part according to the applicable DTC troubleshooting.
•  After performing the DTC inspection, perform the following procedures:
―  Switch the ignition off, and after 2 min or more have elapsed, switch the ignition ON (engine off or on).
―  Start the engine and drive the vehicle 10 m {33 ft} or more in a straight line at a speed of 10 km/h {6.2 mph} or more.
―  Stop the vehicle with the wheels in the straight-ahead position.
―  Verify the operation condition of STR_AB_ANG using the M-MDS.
•  If an abnormal value is indicated again, replace the EPS CM.
TURN_SW_L
On/Off
•  On: Turn switch is in LH position
•  Off: Turn switch is in position other than LH
Turn switch
TURN_SW_R
On/Off
•  On: Turn switch is in RH position
•  Off: Turn switch is in position other than RH
Turn switch
VPWR_IG1
V
BSM control module (LH) power supply voltage is displayed.
•  BSM control module (LH)
•  IG1 relay
•  Battery
VSPD
KPH, MPH
Vehicle speed is displayed.
—
WRN_IND_L
Off/On
•  Off: BSM indicator light (LH) is not illuminated
•  On: BSM indicator light (LH) is illuminated
BSM indicator light (LH)

BSM control module (RH)

—: Not applicable

PID name

Unit/Status

Data contents

Inspection item(s)
BSM_OFF_IL
On/Off
•  On: BSM OFF indicator light is illuminated
•  Off: BSM OFF indicator light is not illuminated
•  BSM OFF switch
•  Instrument cluster
BSM_ST
On/Off
•  On: BSM is operated
•  Off: BSM is not operated
BSM control module (RH)
Buzzer
On/Off
•  On: BSM buzzer is operated
•  Off: BSM buzzer is not operated
•  BSM control module
•  Instrument cluster
DTC_CNT
—
Number of DTCs stored in the BSM control module (RH) is displayed.
BSM control module (RH)
SHIFT_R
Not_R/R
ATX:
•  Not_R: Selector lever is in position other than R
•  R: Selector lever is in R position
MTX:
•  Not_R: Shift lever is in position other than reverse
•  R: Shift lever is in reverse position
ATX:
•  Selector lever
MTX:
•  Shift lever
SWA_POS
° (deg)
Displays steering angle signal (estimated absolute angle)
•  Steering wheel in neutral position: Near 0 degrees
•  Steering wheel turned to left: Changes from 0 degrees to positive
•  Steering wheel turned to right: Changes from 0 degrees to negative
•  Perform the DTC inspection for the PCM, DSC HU/CM, and EPS CM, and if any DTC is displayed, repair the malfunctioning part according to the applicable DTC troubleshooting.
•  After performing the DTC inspection, perform the following procedures:
―  Switch the ignition off, and after 2 min or more have elapsed, switch the ignition ON (engine off or on).
―  Start the engine and drive the vehicle 10 m {33 ft} or more in a straight line at a speed of 10 km/h {6.2 mph} or more.
―  Stop the vehicle with the wheels in the straight-ahead position.
―  Verify the operation condition of STR_AB_ANG using the M-MDS.
•  If an abnormal value is indicated again, replace the EPS CM.
TURN_SW_L
On/Off
•  On: Turn switch is in LH position
•  Off: Turn switch is in position other than LH
Turn switch
TURN_SW_R
On/Off
•  On: Turn switch is in RH position
•  Off: Turn switch is in position other than RH
Turn switch
VPWR_IG1
V
BSM control module (RH) power supply voltage is displayed.
•  BSM control module (RH)
•  IG1 relay
•  Battery
VSPD
KPH, MPH
Vehicle speed is displayed.
—
WRN_IND_L
Off/On
•  Off: BSM indicator light (RH) is not illuminated
•  On: BSM indicator light (RH) is illuminated
BSM indicator light (RH)


Active Command Modes Function

•  The active command modes are shown below.

BSM control module (LH)

Command name

Unit/Operation

Data contents

Output part name
VSPD
OFF/ON
•  OFF: Does not input vehicle speed.
•  ON: Inputs vehicle speed of 34 km/h {21 mph}.
BSM control module (LH)
WRN_IND_L
Off/On
•  Off: Turns off BSM indicator light (LH).
•  On: Illuminates BSM indicator light (LH).
BSM indicator light (LH)


BSM control module (RH)

Command name

Unit/Operation

Data contents

Output part name
BSM_OFF_IL
On/Off
•  On: Illuminates BSM OFF indicator light.
•  On: Turns off BSM OFF indicator light.
BSM OFF indicator light (instrument cluster)
Buzzer
On/Off
•  On: Operates BSM buzzer.
•  Off: Stops BSM buzzer.
BSM buzzer (instrument cluster)
VSPD
OFF/ON
•  OFF: Does not input vehicle speed.
•  ON: Inputs vehicle speed of 34 km/h {21 mph}.
BSM control module (RH)
WRN_IND_L
Off/On
•  Off: Turns off BSM indicator light (RH).
•  On: Illuminates BSM indicator light (RH).
BSM indicator light (RH)