ON-BOARD DIAGNOSTIC [PARKING ASSIST UNIT]

id092200021856


Outline

•  The on-board diagnostic function consists of the following functions:
―  A malfunction detection function, which detects overall malfunctions in the parking assist unit-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 parking assist unit records the malfunction as a DTC. A recorded DTC can be read by the Mazda Modular Diagnostic System (M-MDS).

DTC table

×: Applicable
—: Not applicable

DTC No.

Warning/indicator light

Description

Fail-safe

Drive cycle

Self test type*1

Memory function
B1B36:14
—
Front corner ultrasonic sensor (RH) circuit malfunction
—
—
C, D
×
B1B36:2A
—
Front corner ultrasonic sensor (RH) characteristic malfunction
—
—
C, D
×
B1B38:14
—
Front ultrasonic sensor (RH) circuit malfunction
—
—
C, D
×
B1B38:2A
—
Front ultrasonic sensor (RH) characteristic malfunction
—
—
C, D
×
B1B40:14
—
Front corner ultrasonic sensor (LH) circuit malfunction
—
—
C, D
×
B1B40:2A
—
Front corner ultrasonic sensor (LH) characteristic malfunction
—
—
C, D
×
B1B42:14
—
Front ultrasonic sensor (LH) circuit malfunction
—
—
C, D
×
B1B42:2A
—
Front ultrasonic sensor (LH) characteristic malfunction
—
—
C, D
×
B1B44:14
—
Rear corner ultrasonic sensor (RH) circuit malfunction
—
—
C, D
×
B1B44:2A
—
Rear corner ultrasonic sensor (RH) characteristic malfunction
—
—
C, D
×
B1B46:14
—
Rear ultrasonic sensor (RH) circuit malfunction
—
—
C, D
×
B1B46:2A
—
Rear ultrasonic sensor (RH) characteristic malfunction
—
—
C, D
×
B1B48:14
—
Rear corner ultrasonic sensor (LH) circuit malfunction
—
—
C, D
×
B1B48:2A
—
Rear corner ultrasonic sensor (LH) characteristic malfunction
—
—
C, D
×
B1B50:14
—
Rear ultrasonic sensor (LH) circuit malfunction
—
—
C, D
×
B1B50:2A
—
Rear ultrasonic sensor (LH) characteristic malfunction
—
—
C, D
×
U0010:88
—
Module communication error (HS-CAN)
—
—
C, D
×
U0100:82*2
—
Error signal received from PCM
—
—
C, D
×
U0121:82*2
—
Error signal received from DSC HU/CM
—
—
C, D
×
U0155:00
—
Communication error with instrument cluster
—
—
C, D
×
U0415:68*2
—
Error signal received from DSC HU/CM
—
—
C, D
×
U0423:68
—
Error signal received from instrument cluster
—
—
C, D
×
U2107:93*3
—
Smart city brake support [reverse] (SCBS R) forcibly turned off
—
—
C, D
×
U2300:54
—
Configuration data not received from instrument cluster
—
—
C, D
×
U2300:55
—
Instrument cluster configuration not implemented
—
—
C, D
×
U2300:56
—
Configuration data unmatched with instrument cluster
—
—
C, D
×
U3000:49
—
Parking assist unit internal malfunction
—
—
C, D
×
U3003:16
—
Parking assist unit low power supply voltage input
—
—
C, D
×
U3003:17
—
Parking assist unit high power supply voltage input
—
—
C, D
×

*1  :C: CMDTC self test, D: ODDTC self test
*2  :Vehicles with smart city brake support [reverse] (SCBS R)
*3  :Vehicles with smart city brake support [reverse] (SCBS R) and smart city brake support (SCBS) OFF switch


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.
ac5wzn00001569


Status byte for DTC

•  The two digits (two digits after hyphen (-)) after the 7-digit DTC.
ac5wzn00002011
•  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

DTC No.

Description

Detection condition
B1B36:14
Front corner ultrasonic sensor (RH) circuit malfunction
•  The parking assist unit detected a front corner ultrasonic sensor (RH) circuit malfunction with the ignition switched ON (engine off or on).
B1B36:2A
Front corner ultrasonic sensor (RH) characteristic malfunction
•  Parking assist unit detected a front corner ultrasonic sensor (RH) characteristic malfunction with the ignition switched ON (engine off or on).
B1B38:14
Front ultrasonic sensor (RH) circuit malfunction
•  The parking assist unit detected a front ultrasonic sensor (RH) circuit malfunction with the ignition switched ON (engine off or on).
B1B38:2A
Front ultrasonic sensor (RH) characteristic malfunction
•  Parking assist unit detected a front ultrasonic sensor (RH) characteristic malfunction with the ignition switched ON (engine off or on).
B1B40:14
Front corner ultrasonic sensor (LH) circuit malfunction
•  The parking assist unit detected a front corner ultrasonic sensor (LH) circuit malfunction with the ignition switched ON (engine off or on).
B1B40:2A
Front corner ultrasonic sensor (LH) characteristic malfunction
•  Parking assist unit detected a front corner ultrasonic sensor (LH) characteristic malfunction with the ignition switched ON (engine off or on).
B1B42:14
Front ultrasonic sensor (LH) circuit malfunction
•  The parking assist unit detected a front ultrasonic sensor (LH) circuit malfunction with the ignition switched ON (engine off or on).
B1B42:2A
Front ultrasonic sensor (LH) characteristic malfunction
•  Parking assist unit detected a front ultrasonic sensor (LH) characteristic malfunction with the ignition switched ON (engine off or on).
B1B44:14
Rear corner ultrasonic sensor (RH) circuit malfunction
•  The parking assist unit detected a rear corner ultrasonic sensor (RH) circuit malfunction with the ignition switched ON (engine off or on).
B1B44:2A
Rear corner ultrasonic sensor (RH) characteristic malfunction
•  Parking assist unit detected a rear corner ultrasonic sensor (RH) characteristic malfunction with the ignition switched ON (engine off or on).
B1B46:14
Rear ultrasonic sensor (RH) circuit malfunction
•  The parking assist unit detected a rear ultrasonic sensor (RH) circuit malfunction with the ignition switched ON (engine off or on).
B1B46:2A
Rear ultrasonic sensor (RH) characteristic malfunction
•  Parking assist unit detected a rear ultrasonic sensor (RH) characteristic malfunction with the ignition switched ON (engine off or on).
B1B48:14
Rear corner ultrasonic sensor (LH) circuit malfunction
•  The parking assist unit detected a rear corner ultrasonic sensor (LH) circuit malfunction with the ignition switched ON (engine off or on).
B1B48:2A
Rear corner ultrasonic sensor (LH) characteristic malfunction
•  Parking assist unit detected a rear corner ultrasonic sensor (LH) characteristic malfunction with the ignition switched ON (engine off or on).
B1B50:14
Rear ultrasonic sensor (LH) circuit malfunction
•  The parking assist unit detected a rear ultrasonic sensor (LH) circuit malfunction with the ignition switched ON (engine off or on).
B1B50:2A
Rear ultrasonic sensor (LH) characteristic malfunction
•  Parking assist unit detected a rear ultrasonic sensor (LH) characteristic malfunction with the ignition switched ON (engine off or on).
U0010:88
Module communication error (HS-CAN)
•  Parking assist unit detects the CAN bus communication line (HS-CAN) malfunction 10 times continuously.
U0100:82
Error signal received from PCM
•  Parking assist unit receives the error signal from the PCM for 5 s or more with the ignition switched ON (engine off or on).
U0121:82
Error signal received from DSC HU/CM
•  Parking assist unit receives the error signal from the DSC HU/CM for 5 s or more with the ignition switched ON (engine off or on).
U0155:00
Communication error with instrument cluster
•  Parking assist unit cannot receive the CAN signal from the instrument cluster for 5 s or more.
U0415:68
Error signal received from DSC HU/CM
•  Parking assist unit receives the error signal from the DSC HU/CM for 1 s or more with the ignition switched ON (engine off or on).
U0423:68
Error signal received from instrument cluster
•  Parking assist unit receives the error signal from the instrument cluster for 5 s or more with the ignition switched ON (engine off or on).
U2107:93
Smart city brake support [reverse] (SCBS R) forcibly turned off
•  Parking assist unit detected that the smart city brake support [reverse] (SCBS R) is forcibly turned off with the ignition switched ON (engine off or on).
U2300:54
Configuration data not received from instrument cluster
•  Parking assist unit cannot receive the configuration data from the instrument cluster with the ignition switched ON (engine off or on).
U2300:55
Instrument cluster configuration not implemented
•  Parking assist unit received a signal which indicates the instrument cluster configuration is not performed with the ignition switched ON (engine off or on).
U2300:56
Configuration data unmatched with instrument cluster
•  Configuration data of the parking assist unit and instrument cluster are not matched with the ignition switched ON (engine off or on).
U3000:49
Parking assist unit internal malfunction
•  With the ignition switched ON (engine off or on), a malfunction in the parking assist unit is detected.
U3003:16
Parking assist unit low power supply voltage input
•  Parking assist unit power supply circuit voltage of 8.0 ± 0.8 V or less is detected for 5 s or more with the ignition switched ON (engine off or on).
U3003:17
Parking assist unit high power supply voltage input
•  Parking assist unit power supply circuit voltage of 16.0 ± 0.8 V or more is detected for 5 s or more with the ignition switched ON (engine off or on).


Data Monitor Function

•  With the PID/data monitor function, the input/output signal monitor items set in the parking assist unit can be selected and read out in real-time.
•  The items which can be selected are as follows.

PID/data monitor table

PID

Unit/Operation

Data contents

Terminal
BUZZER_F
No_Detection/Close_Distance/Middle_Distance/Far_Distance/Max_Distance/Freezing/Wire_Breaking
•  No_Detection: Obstruction is not detected
•  Close_Distance: Obstruction is detected within 40 cm {15 in}
•  Middle_Distance: Obstruction is detected within 40—50 cm {16—19 in}
•  Far_Distance: Obstruction is detected within 50—65 cm {20—25 in}
•  Max_Distance: Obstruction is detected within 65—110 cm {26—43.3 in}
•  Freezing: Front ultrasonic sensor is frozen
•  Wire_Breaking: Open circuit in front ultrasonic sensor circuit
Y, Z
BUZZER_R
No_Detection/Close_Distance/Middle_Distance/Far_Distance/Max_Distance/Freezing/Wire_Breaking
•  No_Detection: Obstruction is not detected
•  Close_Distance: Obstruction is detected within 35 cm {13 in}
•  Middle_Distance: Obstruction is detected within 35—40 cm {14—17 in}
•  Far_Distance: Obstruction is detected within 45—60 cm {18—23 in}
•  Max_Distance: Obstruction is detected within 60—150 cm {24.0—59.0 in}
•  Freezing: Rear ultrasonic sensor is frozen
•  Wire_Breaking: Open circuit in rear ultrasonic sensor circuit
W, X
D_FRONT_L
m
Displays the detection distance of the front ultrasonic sensor (LH).
J, K
D_FRONT_L_C
m
Displays the detection distance of the front ultrasonic sensor (corner) (LH).
I, J
D_FRONT_R
m
Displays the detection distance of the front ultrasonic sensor (RH).
J, M
D_FRONT_R_C
m
Displays the detection distance of the front ultrasonic sensor (corner) (RH).
J, O
D_REAR_L
m
Displays the detection distance of the rear ultrasonic sensor (LH).
A, B
D_REAR_L_C
m
Displays the detection distance of the rear ultrasonic sensor (corner) (LH).
E, F
D_REAR_R
m
Displays the detection distance of the rear ultrasonic sensor (RH).
C, D
D_REAR_R_C
m
Displays the detection distance of the rear ultrasonic sensor (corner) (RH).
G, F
PRHB_BATT
No/Yes
•  No: Smart city brake support [reverse] (SCBS R) is not inhibited
•  Yes: Smart city brake support [reverse] (SCBS R) is inhibited due to power supply voltage
U
PRHB_DTC
No/Yes
•  No: Smart city brake support [reverse] (SCBS R) is not inhibited
•  Yes: Smart city brake support [reverse] (SCBS R) is inhibited due to DTC detection
AA, AB
PRHB_FACTORY
Note
•  Displays in the Mazda Modular Diagnostic System (M-MDS) but it does not operate.
PRHB_PCM
No/Yes
•  No: Smart city brake support [reverse] (SCBS R) is not inhibited
•  Yes: Smart city brake support [reverse] (SCBS R) is inhibited due to PCM malfunction
AA, AB
PRHB_SCBS
No/Yes
•  No: Smart city brake support [reverse] (SCBS R) is not inhibited
•  Yes: Smart city brake support [reverse] (SCBS R) is inhibited due to laser sensor malfunction
AA, AB
PRHB_SCBS_SW
No/Yes
•  No: Smart city brake support [reverse] (SCBS R) is not inhibited
•  Yes: Smart city brake support [reverse] (SCBS R) is inhibited due to the personalization feature setting
AA, AB
PRHB_SLOPE
No/Yes
•  No: Smart city brake support [reverse] (SCBS R) is not inhibited
•  Yes: Smart city brake support [reverse] (SCBS R) is inhibited due to road slope
AA, AB
PRHB_STEER
No/Yes
•  No: Smart city brake support [reverse] (SCBS R) is not inhibited
•  Yes: Smart city brake support [reverse] (SCBS R) is inhibited due to steering angle
AA, AB
PRHB_TEMP
No/Yes
•  No: Smart city brake support [reverse] (SCBS R) is not inhibited
•  Yes: Smart city brake support [reverse] (SCBS R) is inhibited due to ambient temperature
AA, AB
PRHB_TOWBAR
Note
•  Displays in the Mazda Modular Diagnostic System (M-MDS) but it does not operate.
PRHB_TRAIL
Note
•  Displays in the Mazda Modular Diagnostic System (M-MDS) but it does not operate.
PSM_OFF_SW
Off/On
•  Off: Parking sensor switch is off
•  On: Parking sensor switch is on
V
REVERSE_LMP
Off/On
•  Off: Back-up light turns off
•  On: Back-up light turns on
AA, AB