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 (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
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
×

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
×
U3003:04
Flash
Instrument cluster configuration error
×
C, D
×
U3000:97
Flash
Radar performance malfunction
×
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 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
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
Instrument cluster configuration error
Configuration data of the BSM control module and instrument cluster are not matched.
U2300:64
Configuration data unmatched with instrument cluster
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
Instrument cluster configuration error
Configuration data of the BSM control module and instrument cluster are not matched.
U2300:64
Configuration data unmatched with instrument cluster
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.
U3003:04
Instrument cluster configuration error
•  BSM control module internal radar sensor sensitivity is decreased.
•  BSM control module internal radar sensor axis is deviated.
U3000:97
Radar performance malfunction
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.


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)

DTC_CNT
Displays number of DTCs stored in the BSM control module (LH).
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.
BSM OFF indicator light (Instrument cluster)
RCTA_BUZZER
Off/On
•  Off: RCTA buzzer does not sound.
•  On: RCTA buzzer sounds.
Audio unit
RCTA_OFF_IL
Off/On
•  Off: RCTA OFF indicator is turned off.
•  On: RCTA OFF indicator is turned on.
Audio unit
RCTA_WARN
Off/On
•  Off: RCTA warning indicator is turned off.
•  On: RCTA warning indicator is turned on.
Audio unit
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:
•  Transaxle range sensor
MTX:
•  Back-up light switch
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.
VPWR_IG1
V
Displays BSM control module (LH) power supply voltage.
•  BSM control module (LH)
•  IG1 relay
•  Battery
VSPD
KPH, MPH
Displays vehicle speed.
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)

DTC_CNT
Displays number of DTCs stored in the BSM control module (RH).
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.
BSM OFF indicator light (Instrument cluster)
RCTA_OFF_IL
Off/On
•  Off: RCTA OFF indicator is turned off.
•  On: RCTA OFF indicator is turned on.
Audio unit
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:
•  Transaxle range sensor (TCM)
MTX:
•  Back-up light switch
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.
VPWR_IG1
V
Displays BSM control module (RH) power supply voltage.
•  BSM control module (RH)
•  IG1 relay
•  Battery
VSPD
KPH, MPH
Displays vehicle speed.
WRN_IND_R
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.

Active command modes table

BSM control module (LH)

Command name

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 buzzer does not sound.
•  On: RCTA buzzer sounds.
Audio unit
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

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 buzzer does not sound.
•  On: RCTA buzzer sounds.
Audio unit
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)