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.
―  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 (LH) 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, D
×
U0100:00
Flash
Communication error with PCM
×
—
C, D
×
U0131:00
Flash
Communication error with EPS control module
×
—
C, D
×
U0155:00
Flash
Communication error with instrument cluster
×
—
C, D
×
U0214:00
Flash
Communication error with start stop unit
×
—
C, D
×
U0233:00
Flash
Communication error with BSM control module (RH)
×
—
C, D
×
U0401:68
Flash
Error signal received from PCM
×
—
C, D
×
U0420:68
Flash
Error signal received from EPS control module
×
—
C, D
×
U0423:68
Flash
Error signal received from instrument cluster
×
—
C, D
×
U0515:68
Flash
Error signal received from start stop unit
×
—
C, D
×
U2300:54
Flash
Configuration signal not received
×
—
C, D
×
U2300:56
Flash
Configuration data unmatched with instrument cluster
×
—
C, D
×
U2300:64
Flash
Instrument cluster configuration error
×
—
C, D
×
U3000:01
Flash
Electrical malfunction inside BSM control module
×
—
C, D
×
U3000:09
Flash
BSM control module internal malfunction
×
—
C, D
×
U3000:54
Flash
Radar performance malfunction
×
—
C, D
×
U3000:97
Flash
Radar performance malfunction
×
—
C, D
×
U3003:04
Flash
Instrument cluster configuration error
×
—
C, D
×
U3003:16
Flash
BSM control module low power supply voltage input (less than 8.2 V)
×
—
C, D
×
U3003:17
Flash
BSM control module high power supply voltage input (16.8 V or more)
×
—
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, D
×
U0100:00
Flash
Communication error with PCM
×
—
C, D
×
U0131:00
Flash
Communication error with EPS control module
×
—
C, D
×
U0155:00
Flash
Communication error with instrument cluster
×
—
C, D
×
U0214:00
Flash
Communication error with start stop unit
×
—
C, D
×
U0232:00
Flash
Communication error with BSM control module (LH)
×
—
C, D
×
U0401:68
Flash
Error signal received from PCM
×
—
C, D
×
U0420:68
Flash
Error signal received from EPS control module
×
—
C, D
×
U0423:68
Flash
Error signal received from instrument cluster
×
—
C, D
×
U0515:68
Flash
Error signal received from start stop unit
×
—
C, D
×
U2300:54
Flash
Configuration signal not received
×
—
C, D
×
U2300:56
Flash
Instrument cluster configuration error
×
—
C, D
×
U2300:64
Flash
Configuration data unmatched with instrument cluster
×
—
C, D
×
U3000:01
Flash
Electrical malfunction inside BSM control module
×
—
C, D
×
U3000:09
Flash
BSM control module internal malfunction
×
—
C, D
×
U3000:54
Flash
Radar performance malfunction
×
—
C, D
×
U3000:97
Flash
Radar performance malfunction
×
—
C, D
×
U3003:04
Flash
Instrument cluster configuration error
×
—
C, D
×
U3003:16
Flash
BSM control module low power supply voltage input (less than 8.2 V)
×
—
C, D
×
U3003:17
Flash
BSM control module high power supply voltage input (16.8 V or more)
×
—
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 two digits (two digits after hyphen (-)) after the 7-digit DTC.
ac5wzn00002009
•  A code which indicates the pending code, current/past malfunction status, or warning illumination status.
•  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
BSM control module (LH) performs measurement at 0.01 s intervals and a short to ground in the BSM indicator light (LH) circuit is detected 48 times continuously.
B118C:15
BSM indicator light (LH) circuit malfunction
BSM control module (LH) performs measurement at 0.01 s intervals and a short to power supply in the BSM indicator light (LH) circuit is detected 48 times continuously.
U0001:88
Module communication error (HS-CAN)
BSM control module detected a CAN bus communication line (HS-CAN) malfunction for 0.4 s or more.
U0100:00
Communication error with PCM
BSM control module cannot receive a CAN signal from the PCM for 1.5 s or more.
U0131:00
Communication error with EPS control module
BSM control module cannot receive a CAN signal from the EPS control module for 1.5 s or more.
U0155:00
Communication error with instrument cluster
BSM control module cannot receive a CAN signal from the instrument cluster.
U0214:00
Communication error with start stop unit
BSM control module cannot receive a CAN signal from the start stop unit for 1.5 s or more.
U0233:00
Communication error with BSM control module (RH)
No communication between BSM control module (LH) and (RH) for 1 s or more.
U0401:68
Error signal received from PCM
BSM control module receives the error signal from the PCM for 1 s or more.
U0420:68
Error signal received from EPS control module
BSM control module receives the error signal from the EPS control module for 1 s or more.
U0423:68
Error signal received from instrument cluster
BSM control module receives the error signal from the instrument cluster for 1 s or more.
U0515:68
Error signal received from start stop unit
BSM control module receives the error signal from the start stop unit for 1 s or more.
U2300:54
Configuration signal not received
BSM control module cannot receive the configuration signal it is supposed to receive.
U2300:56
Configuration data unmatched with instrument cluster
Configuration data of the BSM control module and instrument cluster are not matched.
U2300:64
Instrument cluster configuration error
Instrument cluster configuration error (signal error) detected.
U3000:01
Electrical malfunction inside BSM control module
BSM control module is detected an electrical malfunction inside.
U3000:09
BSM control module internal malfunction
BSM control module detected a malfunction inside the voltage control oscillator.
U3000:54
Radar performance malfunction
BSM control module detected malfunction in misalignment.
U3000:97
Radar performance malfunction
•  BSM control module internal radar sensor sensitivity is decreased.
•  BSM control module internal radar sensor axis is deviated.
U3003:04
Instrument cluster configuration error
Instrument cluster configuration error detected.
U3003:16
BSM control module low power supply voltage input (less than 8.2 V)
BSM control module power supply voltage of less than 8.2 V is detected for 2 s or more.
U3003:17
BSM control module high power supply voltage input (16.8 V or more)
BSM control module power supply voltage of 16.8 V or more is detected for 2 s or more.

BSM Control Module (RH)

DTC No.

Description

Detection condition
B118D:11
BSM indicator light (RH) circuit malfunction
BSM control module (RH) performs measurement at 0.01 s intervals and a short to ground in the BSM indicator light (RH) circuit is detected 48 times continuously.
B118D:15
BSM indicator light (RH) circuit malfunction
BSM control module (RH) performs measurement at 0.01 s intervals and a short circuit to power supply in the BSM indicator light (RH) circuit is detected 48 times continuously.
U0001:88
Module communication error (HS-CAN)
BSM control module detected a CAN bus communication line (HS-CAN) malfunction for 0.4 s or more.
U0100:00
Communication error with PCM
BSM control module cannot receive a CAN signal from the PCM for 1.5 s or more.
U0131:00
Communication error with EPS control module
BSM control module cannot receive a CAN signal from the EPS control module for 1.5 s or more.
U0155:00
Communication error with instrument cluster
BSM control module cannot receive a CAN signal from the instrument cluster.
U0214:00
Communication error with start stop unit
BSM control module cannot receive a CAN signal from the start stop unit for 1.5 s or more.
U0232:00
Communication error with BSM control module (LH)
No communication between BSM control module (LH) and (RH) for 1 s or more.
U0401:68
Error signal received from PCM
BSM control module receives the error signal from the PCM for 1 s or more.
U0420:68
Error signal received from EPS control module
BSM control module receives the error signal from the EPS control module for 1 s or more.
U0423:68
Error signal received from instrument cluster
BSM control module receives the error signal from the instrument cluster for 1 s or more.
U0515:68
Error signal received from start stop unit
BSM control module receives the error signal from the start stop unit for 1 s or more.
U2300:54
Configuration signal not received
BSM control module cannot receive the configuration signal it is supposed to receive.
U2300:56
Configuration data unmatched with instrument cluster
Configuration data of the BSM control module and instrument cluster are not matched.
U2300:64
Instrument cluster configuration error
Instrument cluster configuration error (signal error) detected.
U3000:01
Electrical malfunction inside BSM control module
BSM control module is detected an electrical malfunction inside.
U3000:09
BSM control module internal malfunction
BSM control module detected a malfunction inside the voltage control oscillator.
U3000:54
Radar performance malfunction
BSM control module detected malfunction in misalignment.
U3000:97
Radar performance malfunction
Instrument cluster configuration error detected.
U3003:04
Instrument cluster configuration error
•  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 8.2 V)
BSM control module power supply voltage of less than 8.2 V is detected for 2 s or more.
U3003:17
BSM control module high power supply voltage input (16.8 V or more)
BSM control module power supply voltage of 16.8 V or more is detected for 2 s or more.


Snap shot data

Note
•  The BSM control module (LH) or (RH) stores the following two types of snapshot data (vehicle information) when a DTC is detected and displays them in the M-MDS.
―  Vehicle information detected by BSM control module (LH) or (RH)
―  Vehicle information detected by instrument cluster and received by BSM control module (LH) or (RH) via CAN signal
•  The data for all DTCs currently detected is stored.

—: Not applicable

Snapshot data item

Unit

Data contents

Data read/use method

Corresponding data monitor items
AAT
°C
°F
Ambient temperature
—
—
APP_STATUS
Accelerator Pedal Off/Under20%/Over20%/FAIL
Accelerator pedal position status
—
—
CFG_STATUS
Config Complete/Not Configured/Config Error
Instrument cluster configuration status
—
—
ECT_STATUS
Under 0 degrees C/0 - Under 80 degrees C/Over 80 degrees C/FAIL
Engine coolant temperature status
—
—
IC_VPWR
V
Instrument cluster power supply voltage
•  The BSM control module (LH) or (RH) constantly receives the power supply voltage value of the instrument cluster sent via CAN signal from the instrument cluster.
•  If a DTC is detected, the BSM control module (LH) or (RH) records the power supply voltage of the instrument cluster when the DTC was detected, and it is displayed in the M-MDS.
VPWR*1
IG-ON_TIMER
hh:mm:ss*2
Elapsed time since ignition was switched ON (engine off or on)
Note
•  The instrument cluster records the elapsed time since the ignition was switched ON (engine off or on).
•  The BSM control module (LH) or (RH) constantly receives the elapsed time since the ignition was switched ON (engine off or on) sent via CAN signal from the instrument cluster.
•  If a DTC is detected, the BSM control module (LH) or (RH) records the elapsed time since the ignition was switched ON (engine off or on) when the DTC was detected, and it is displayed in the M-MDS.
—
PWR_MODE_KEY
Key Out/Key Recently Out (Position 0)/Accessory (Position 1)/Post Ignition (Position 2)/Ignition On (Position 2)/Running (Position 2)/Running - Starting
•  Key Out: Ignition switched off
•  Key Recently Out (Position 0): Elapsed time within 3 s since ignition was switched off
•  Accessory (Position 1): Ignition is switched to ACC
•  Post Ignition (Position 2): Elapsed time within 3 s since ignition was switched ON (engine off or on)
•  Ignition On (Position 2): Ignition switched ON (engine off)
•  Running (Position 2): Ignition switched ON (engine on)
•  Running - Starting: Cranking condition
•  The BSM control module (LH) or (RH) constantly receives the ignition switch status sent via CAN signal from the instrument cluster.
•  If a DTC is detected, the BSM control module (LH) or (RH) records the ignition switch status when the DTC was detected, and it is displayed in the M-MDS.
—
RPM_STATUS
Engine Stop/Under1500rpm/Over1500rpm/FAIL
Engine speed status
•  The BSM control module (LH) or (RH) constantly receives the engine speed sent via CAN signal from the instrument cluster.
•  If a DTC is detected, the BSM control module (LH) or (RH) records the engine speed when the DTC was detected, and it is displayed in the M-MDS.
TACHOMTR*1
SHIFT_STATUS
P/N/D/R/FAIL
Selector lever position status
•  The BSM control module (LH) or (RH) constantly receives the selector lever position sent via CAN signal from the instrument cluster.
•  If a DTC is detected, the BSM control module (LH) or (RH) records the selector lever position when the DTC was detected, and it is displayed in the M-MDS.
—
TOTAL_DIST
km
Miles
Accumulated total traveled distance from completion of vehicle until BSM control module (LH) or (RH) detects DTC (Odometer value in instrument cluster)
The total traveled distance from which the BSM control module (LH) or (RH) detects DTCs to the present can be calculated by performing the following procedure.
1.  Verify the odometer value in the instrument cluster.
2.  Verify the snapshot data item TOTAL_DIST.
3.  Subtract 2 from 1.
—
TOTAL_TIME
hh:mm:ss*2
Accumulated total elapsed time since vehicle completion until BSM control module (LH) or (RH) detects a DTC
Note
•  When the ROOM fuse is removed, and the ignition is switched off, the time is not included in the elapsed time.
The elapsed time from which the BSM control module (LH) or (RH) detects DTCs to the present can be calculated by performing the following procedure.
1.  Verify the instrument cluster PID item TOTAL_TIME.
2.  Verify the snapshot data item TOTAL_TIME.
3.  Subtract 2 from 1.
TOTAL_TIME*1
VPWR
V
BSM control module (LH) or (RH) power supply voltage
—
VPWR_IG1
VSPD_STATUS
Stop/0-10km/h/Over10km/h/FAIL
Vehicle speed status
•  The BSM control module (LH) or (RH) constantly receives the vehicle speed sent via CAN signal from the instrument cluster.
•  If a DTC is detected, the BSM control module (LH) or (RH) records the vehicle speed when the DTC was detected, and it is displayed in the M-MDS.
SPEEDOMTR*1

*1  :Instrument cluster PID (See ON-BOARD DIAGNOSTIC [INSTRUMENT CLUSTER].)
*2  :The seconds may be indicated after the decimal point.


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

Unit/Operation

Data contents

Module control terminal
DTC_CNT
—
Displays number of DTCs stored in the BSM control module (LH)
—
IL_MODE
Off/On
•  Off: BSM OFF indicator light is illuminated in night mode.
•  On: BSM OFF indicator light is illuminated in daytime mode.
C, D (CAN)
RCTA_BUZZER
Off/On
•  Off: RCTA warning alarm does not sound.
•  On: RCTA warning alarm sounds.
C, D (CAN)
RCTA_OFF_IL
Off/On
•  Off: BSM OFF indicator light is not illuminated.
•  On: BSM OFF indicator light is illuminated.
C, D (CAN)
RCTA_WARN
Off/On
•  Off: BSM indicator lights are not illuminated.
•  On: BSM indicator lights are illuminated.
Note
•  BSM indicator lights will be turned on, if the selector lever (ATX)/shift lever (MTX) is in R position (ATX)/reverse position (MTX).
C, D (CAN)
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.
C, D (CAN)
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
C, D (CAN)
VPWR_IG1
V
Displays BSM control module (LH) power supply voltage
I (Power supply)
VSPD
KPH, MPH
Displays vehicle speed
C, D (CAN)
WRN_IND_L
Off/On
•  Off: BSM indicator light (LH) is not illuminated.
•  On: BSM indicator light (LH) is illuminated.
•  G (BSM indicator light (LH) signal)
•  J (Ground)

BSM Control Module (RH)

—: Not applicable

PID

Unit/Operation

Data contents

Module control terminal
DTC_CNT
—
Displays number of DTCs stored in the BSM control module (RH)
—
IL_MODE
Off/On
•  Off: BSM OFF indicator light is illuminated in night mode.
•  On: BSM OFF indicator light is illuminated in daytime mode.
A, B (CAN)
RCTA_OFF_IL
Off/On
•  Off: BSM OFF indicator light is not illuminated.
•  On: BSM OFF indicator light is illuminated.
A, B (CAN)
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.
A, B (CAN)
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
A, B (CAN)
VPWR_IG1
V
Displays BSM control module (RH) power supply voltage
I (Power supply)
VSPD
KPH, MPH
Displays vehicle speed
A, B (CAN)
WRN_IND_R
Off/On
•  Off: BSM indicator light (RH) is not illuminated.
•  On: BSM indicator light (RH) is illuminated.
•  G (BSM indicator light (RH) signal)
•  J (Ground)


Active Command Modes Function

•  The active command modes are shown below.

Active command modes table

BSM control module (LH)

Simulation item

Unit/Operation

Data contents

Output part name
BSM_OFF_IL
On/Off
•  On: Illuminates BSM OFF indicator light.
•  Off: Turns off BSM OFF indicator light.
BSM OFF indicator light (Instrument cluster)
Buzzer
On/Off
•  On: Operates BSM warning alarm.
•  Off: Stops BSM warning alarm.
BSM warning alarm (Instrument cluster)
IL_MODE
Off/On
•  Off: Illuminates BSM OFF indicator light in night mode.
•  On: Illuminates BSM OFF indicator light in daytime mode.
BSM OFF indicator light (Instrument cluster)
RCTA_BUZZER
Off/On
•  Off: RCTA warning alarm does not sound.
•  On: RCTA warning alarm sounds.
RCTA warning alarm (Instrument cluster)
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) (Power outer mirror (LH))

BSM Control Module (RH)

Simulation item

Unit/Operation

Data contents

Output part name
IL_MODE
Off/On
•  Off: Illuminates BSM OFF indicator light in night mode.
•  On: Illuminates BSM OFF indicator light in daytime mode.
BSM OFF indicator light (Instrument cluster)
RCTA_BUZZER
Off/On
•  Off: RCTA warning alarm does not sound.
•  On: RCTA warning alarm sounds.
RCTA warning alarm (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_R
Off/On
•  Off: Turns off BSM indicator light (RH).
•  On: Illuminates BSM indicator light (RH).
BSM indicator light (RH) (Power outer mirror (RH))