 |
ac4ccn00000963
ON-BOARD DIAGNOSTIC [ELECTRIC PARKING BRAKE]
id040257555500
Outline
Block diagram
ac4ccn00000963
|
Malfunction detection function
DTC table
|
DTC No. |
Electric parking brake warning light |
Electric parking brake indicator light |
Description |
Fail-safe |
Drive cycle |
Self test type*1 |
Memory function |
|---|---|---|---|---|---|---|---|
|
C1020:68*3
|
ON
|
OFF
|
Error signal received from DSC HU/CM
|
—
|
—
|
C
|
×
|
|
C1128:29
|
ON
|
OFF*2
|
Electric parking brake switch circuit malfunction
|
×
|
—
|
C, D
|
×
|
|
C1128:2A
|
ON
|
OFF
|
Electric parking brake switch circuit malfunction
|
×
|
—
|
C
|
×
|
|
C1128:4A
|
ON
|
OFF*2
|
Electric parking brake switch circuit malfunction
|
×
|
—
|
C, D
|
×
|
|
C112A:77
|
ON
|
Flashes
|
Incorrect electric parking brake motor gear unit position
|
—
|
—
|
C
|
×
|
|
C2005:07
|
ON
|
Flashes
|
Mechanical problem of electric parking brake motor gear unit (RH)
|
—
|
—
|
C
|
×
|
|
C2005:11
|
ON
|
Flashes
|
Electric parking brake motor gear unit (RH) circuit malfunction
|
—
|
—
|
C, D
|
×
|
|
C2005:12
|
ON
|
Flashes
|
Electric parking brake motor gear unit (RH) circuit malfunction
|
—
|
—
|
C, D
|
×
|
|
C2005:13
|
ON
|
Flashes
|
Electric parking brake motor gear unit (RH) circuit malfunction
|
—
|
—
|
C, D
|
×
|
|
C2005:19
|
ON
|
Flashes
|
Electric parking brake motor gear unit (RH) circuit malfunction
|
—
|
—
|
C, D
|
×
|
|
C2005:71
|
ON
|
Flashes
|
Electric parking brake motor gear unit (RH) sticking
|
—
|
—
|
C
|
×
|
|
C2005:74
|
ON
|
Flashes
|
Electric parking brake motor gear unit (RH) power transmission impossible (spin)
|
—
|
—
|
C
|
×
|
|
C2006:07
|
ON
|
Flashes
|
Mechanical problem of electric parking brake motor gear unit (LH)
|
—
|
—
|
C
|
×
|
|
C2006:11
|
ON
|
Flashes
|
Electric parking brake motor gear unit (LH) circuit malfunction
|
—
|
—
|
C, D
|
×
|
|
C2006:12
|
ON
|
Flashes
|
Electric parking brake motor gear unit (LH) circuit malfunction
|
—
|
—
|
C, D
|
×
|
|
C2006:13
|
ON
|
Flashes
|
Electric parking brake motor gear unit (LH) circuit malfunction
|
—
|
—
|
C, D
|
×
|
|
C2006:19
|
ON
|
Flashes
|
Electric parking brake motor gear unit (LH) circuit malfunction
|
—
|
—
|
C, D
|
×
|
|
C2006:71
|
ON
|
Flashes
|
Electric parking brake motor gear unit (LH) sticking
|
—
|
—
|
C
|
×
|
|
C2006:74
|
ON
|
Flashes
|
Electric parking brake motor gear unit (LH) power transmission impossible (spin)
|
—
|
—
|
C
|
×
|
|
U0001:88
|
ON
|
OFF
|
Unit communication error (HS-CAN)
|
—
|
—
|
C, D
|
×
|
|
U0100:00
|
ON
|
OFF
|
Communication error with PCM
|
—
|
—
|
C, D
|
×
|
|
U0101:00
|
ON
|
OFF
|
Communication error with TCM
|
—
|
—
|
C, D
|
×
|
|
U0121:00
|
ON
|
OFF
|
Communication error with DSC HU/CM
|
—
|
—
|
C, D
|
×
|
|
U0151:00
|
ON
|
OFF
|
Communication error with SAS control module
|
—
|
—
|
C, D
|
×
|
|
U0155:00
|
ON
|
OFF
|
Communication error with instrument cluster
|
—
|
—
|
C, D
|
×
|
|
U0401:00
|
ON
|
OFF
|
Error signal received from PCM
|
—
|
—
|
C, D
|
×
|
|
U0401:68
|
ON
|
OFF
|
Error signal received from PCM
|
—
|
—
|
C, D
|
×
|
|
U0401:82
|
ON
|
OFF
|
Error signal received from PCM
|
—
|
—
|
C, D
|
×
|
|
U0401:83
|
ON
|
OFF
|
Error signal received from PCM
|
—
|
—
|
C, D
|
×
|
|
U0402:00
|
ON
|
OFF
|
Error signal received from TCM
|
—
|
—
|
C, D
|
×
|
|
U0415:00
|
OFF
|
OFF
|
Error signal received from DSC HU/CM
|
—
|
—
|
C, D
|
×
|
|
U0415:68
|
ON
|
OFF
|
Error signal received from DSC HU/CM
|
—
|
—
|
C, D
|
×
|
|
U0415:82
|
ON
|
OFF
|
Error signal received from DSC HU/CM
|
—
|
—
|
C, D
|
×
|
|
U0415:83
|
ON
|
OFF
|
Error signal received from DSC HU/CM
|
—
|
—
|
C, D
|
×
|
|
U0423:00
|
ON
|
OFF
|
Error signal received from instrument cluster
|
—
|
—
|
C, D
|
×
|
|
U0423:68
|
ON
|
OFF
|
Error signal received from instrument cluster
|
—
|
—
|
C, D
|
×
|
|
U0423:82
|
ON
|
OFF
|
Error signal received from instrument cluster
|
—
|
—
|
C, D
|
×
|
|
U2000:4B
|
ON
|
OFF
|
Abnormal electric parking brake motor gear unit temperature
|
—
|
—
|
C
|
×
|
|
U2300:55
|
ON
|
OFF
|
Instrument cluster configuration not implemented
|
—
|
—
|
C, D
|
×
|
|
U2300:56
|
ON
|
OFF
|
Configuration data unmatched with instrument cluster
|
—
|
—
|
C, D
|
×
|
|
U3000:04
|
ON
|
OFF*2
|
Electric parking brake control module internal malfunction
|
—
|
—
|
C, D
|
×
|
|
U3000:1C
|
ON
|
OFF*2
|
Electric parking brake control module power supply voltage monitor error
|
—
|
—
|
C, D
|
×
|
|
U3000:1D
|
ON
|
Flashes
|
Electric parking brake control module internal malfunction
|
—
|
—
|
C, D
|
×
|
|
U3000:53
|
ON
|
OFF
|
Maintenance mode switching
|
—
|
—
|
C
|
×
|
|
U3000:54
|
ON
|
OFF
|
Electric parking brake motor gear unit position learning not completed
|
—
|
—
|
C
|
×
|
|
U3001:04
|
ON
|
OFF
|
Electric parking brake control module internal malfunction
|
—
|
—
|
C
|
×
|
|
U3003:16
|
ON
|
Flashes
|
Electric parking brake control module low power supply voltage input
|
—
|
—
|
C, D
|
×
|
|
U3003:17
|
ON
|
Flashes
|
Electric parking brake control module high power supply voltage input
|
—
|
—
|
C, D
|
×
|
|
U3006:01
|
ON
|
OFF*2
|
Electric parking brake control module low power supply voltage input
|
—
|
—
|
C, D
|
×
|
|
U3007:01
|
ON
|
OFF*2
|
Electric parking brake control module low power supply voltage input
|
—
|
—
|
C, D
|
×
|
|
U300A:62
|
ON
|
OFF
|
Ignition switch status mismatch
|
—
|
—
|
C
|
×
|
DTC 7-digit code definition
ac5wzn00001569
|
Status byte for DTC
ac5wzn00002011
|
Detection condition for the applicable DTC
|
DTC No. |
Description |
Detection condition |
|---|---|---|
|
C1020:68
|
Error signal received from DSC HU/CM
|
• Electric parking brake control module receives the error signals from the DSC HU/CM.
|
|
C1128:29
|
Electric parking brake switch circuit malfunction
|
• Electric parking brake control module detects an electric parking brake switch circuit malfunction.
|
|
C1128:2A
|
Electric parking brake switch circuit malfunction
|
• Electric parking brake control module detects the operation or release of the electric parking brake switch for a continuous 30 s while the vehicle is stopped.
|
|
C1128:4A
|
Electric parking brake switch circuit malfunction
|
• Electric parking brake control module detects an open circuit in the electric parking brake switch circuit.
|
|
C112A:77
|
Incorrect electric parking brake motor gear unit position
|
• Electric parking brake control module detects incorrect electric parking brake motor gear unit (LH) and (RH) positions.
|
|
C2005:07
|
Mechanical problem of electric parking brake motor gear unit (RH)
|
• Electric parking brake control module detects a mechanical problem of the electric parking brake motor gear unit (RH).
|
|
C2005:11
|
Electric parking brake motor gear unit (RH) circuit malfunction
|
• Electric parking brake control module detects a short to ground in the electric parking brake motor gear unit (RH) circuit.
|
|
C2005:12
|
Electric parking brake motor gear unit (RH) circuit malfunction
|
• Electric parking brake control module detects a short to power supply in the electric parking brake motor gear unit (RH) circuit.
|
|
C2005:13
|
Electric parking brake motor gear unit (RH) circuit malfunction
|
• Electric parking brake control module detects an open circuit in the electric parking brake motor gear unit (RH) circuit.
|
|
C2005:19
|
Electric parking brake motor gear unit (RH) circuit malfunction
|
• Electric parking brake control module detects that the current flowing to the electric parking brake motor gear unit (RH) circuit is higher than the threshold.
|
|
C2005:71
|
Electric parking brake motor gear unit (RH) sticking
|
• Electric parking brake control module detects an electric parking brake motor gear unit (RH) sticking.
|
|
C2005:74
|
Electric parking brake motor gear unit (RH) power transmission impossible (spin)
|
• Electric parking brake control module detects an electric parking brake motor gear unit (RH) power transmission impossible (spin).
|
|
C2006:07
|
Mechanical problem of electric parking brake motor gear unit (LH)
|
• Electric parking brake control module detects a mechanical problem of the electric parking brake motor gear unit (LH).
|
|
C2006:11
|
Electric parking brake motor gear unit (LH) circuit malfunction
|
• Electric parking brake control module detects a short to ground in the electric parking brake motor gear unit (LH) circuit.
|
|
C2006:12
|
Electric parking brake motor gear unit (LH) circuit malfunction
|
• Electric parking brake control module detects a short to power supply in the electric parking brake motor gear unit (LH) circuit.
|
|
C2006:13
|
Electric parking brake motor gear unit (LH) circuit malfunction
|
• Electric parking brake control module detects an open circuit in the electric parking brake motor gear unit (LH) circuit.
|
|
C2006:19
|
Electric parking brake motor gear unit (LH) circuit malfunction
|
• Electric parking brake control module detects that the current flowing to the electric parking brake motor gear unit (LH) circuit is higher than the threshold.
|
|
C2006:71
|
Electric parking brake motor gear unit (LH) sticking
|
• Electric parking brake control module detects an electric parking brake motor gear unit (LH) sticking.
|
|
C2006:74
|
Electric parking brake motor gear unit (LH) power transmission impossible (spin)
|
• Electric parking brake control module detects an electric parking brake motor gear unit (LH) power transmission impossible (spin).
|
|
U0001:88
|
Unit communication error (HS-CAN)
|
• Electric parking brake control module detects the CAN bus communication line (HS-CAN) malfunction 10 times continuously with the ignition switched ON (engine off or on).
|
|
U0100:00
|
Communication error with PCM
|
• Electric parking brake control module could not receive the CAN signal from the PCM with the ignition switched ON (engine off or on).
|
|
U0101:00
|
Communication error with TCM
|
• Electric parking brake control module could not receive the CAN signal from the TCM with the ignition switched ON (engine off or on).
|
|
U0121:00
|
Communication error with DSC HU/CM
|
• Electric parking brake control module could not receive the CAN signal from the DSC HU/CM with the ignition switched ON (engine off or on).
|
|
U0151:00
|
Communication error with SAS control module
|
• Electric parking brake control module could not receive the CAN signal from the SAS control module with the ignition switched ON (engine off or on).
|
|
U0155:00
|
Communication error with instrument cluster
|
• Electric parking brake control module could not receive the CAN signal from the instrument cluster with the ignition switched ON (engine off or on).
|
|
U0401:00
|
Error signal received from PCM
|
• Electric parking brake control module receives the error signals from the PCM with the ignition switched ON (engine off or on).
|
|
U0401:68
|
Error signal received from PCM
|
• Electric parking brake control module receives the error signals from the PCM with the ignition switched ON (engine off or on).
|
|
U0401:82
|
Error signal received from PCM
|
• Electric parking brake control module receives the error signals from the PCM with the ignition switched ON (engine off or on).
|
|
U0401:83
|
Error signal received from PCM
|
• Electric parking brake control module receives the error signals from the PCM with the ignition switched ON (engine off or on).
|
|
U0402:00
|
Error signal received from TCM
|
• Electric parking brake control module receives the error signals from the TCM with the ignition switched ON (engine off or on).
|
|
U0415:00
|
Error signal received from DSC HU/CM
|
• Electric parking brake control module receives the error signals from the DSC HU/CM with the ignition switched ON (engine off or on).
|
|
U0415:68
|
Error signal received from DSC HU/CM
|
• Electric parking brake control module receives the error signals from the DSC HU/CM with the ignition switched ON (engine off or on).
|
|
U0415:82
|
Error signal received from DSC HU/CM
|
• Electric parking brake control module receives the error signals from the DSC HU/CM with the ignition switched ON (engine off or on).
|
|
U0415:83
|
Error signal received from DSC HU/CM
|
• Electric parking brake control module receives the error signals from the DSC HU/CM with the ignition switched ON (engine off or on).
|
|
U0423:00
|
Error signal received from instrument cluster
|
• Electric parking brake control module receives the error signals from the instrument cluster with the ignition switched ON (engine off or on).
|
|
U0423:68
|
Error signal received from instrument cluster
|
• Electric parking brake control module receives the error signals from the instrument cluster with the ignition switched ON (engine off or on).
|
|
U0423:82
|
Error signal received from instrument cluster
|
• Electric parking brake control module receives the error signals from the instrument cluster with the ignition switched ON (engine off or on).
|
|
U2000:4B
|
Abnormal electric parking brake motor gear unit temperature
|
• The electric parking brake is operated repeatedly for a short period.
|
|
U2300:55
|
Instrument cluster configuration not implemented
|
• Electric parking brake control module 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 electric parking brake control module and instrument cluster are not matched with the ignition switched ON (engine off or on).
|
|
U3000:04
|
Electric parking brake control module internal malfunction
|
• Electric parking brake control module detects the internal malfunction.
|
|
U3000:1C
|
Electric parking brake control module power supply voltage monitor error
|
• Abnormal electric parking brake control module power supply voltage is detected.
|
|
U3000:1D
|
Electric parking brake control module internal malfunction
|
• Electric parking brake control module detects the internal malfunction.
|
|
U3000:53
|
Maintenance mode switching
|
• Electric parking brake system switches to maintenance mode.
|
|
U3000:54
|
Electric parking brake motor gear unit position learning not completed
|
• After replacing the electric brake control module, a condition in which the electric parking brake motor gear unit position learning has not been completed is detected.
|
|
U3001:04
|
Electric parking brake control module internal malfunction
|
• Malfunction in the electric parking brake control module is detected.
|
|
U3003:16
|
Electric parking brake control module low power supply voltage input
|
• Voltage of 9 V or less is detected in the power supply circuit of the electric parking brake control module.
|
|
U3003:17
|
Electric parking brake control module high power supply voltage input
|
• Power supply voltage of 16 V or more is detected in the power supply circuit of the electric parking brake control module.
|
|
U3006:01
|
Electric parking brake control module low power supply voltage input
|
• Voltage of 9 V or less is detected in the power supply circuit (1H terminal) of the electric parking brake control module.
|
|
U3007:01
|
Electric parking brake control module low power supply voltage input
|
• Voltage of 9 V or less is detected in the power supply circuit (1C terminal) of the electric parking brake control module.
|
|
U300A:62
|
Ignition switch status mismatch
|
• Electric parking brake control module detects the following mismatches.
|
Snap shot data
|
Snapshot data item |
Unit |
Data contents |
Data read/use method |
Corresponding data monitor items |
|
|---|---|---|---|---|---|
|
AAT
|
°C
|
°F
|
Ambient temperature
|
—
|
—
|
|
ACT_POS_L
|
-/Applied/Applying/RELEASED/Releasing/Maintenance Mode
|
Electric parking brake motor gear unit (LH) status
|
—
|
• ACT_L_APPLY
• ACT_L_REL
• ACT_MAINTE
|
|
|
ACT_POS_R
|
-/Applied/Applying/RELEASED/Releasing/Maintenance Mode
|
Electric parking brake motor gear unit (RH) status
|
—
|
• ACT_R_APPLY
• ACT_R_REL
• ACT_MAINTE
|
|
|
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
|
—
|
—
|
|
|
EPB_SW
|
Neutral/Apply/Release/Error
|
Electric parking brake switch input status
|
—
|
EPB_SW
|
|
|
IC_VPWR
|
V
|
Instrument cluster power supply voltage
|
• The electric parking brake control module constantly receives the power supply voltage value of the instrument cluster sent via CAN communication from the instrument cluster.
• If a DTC is detected, the electric parking brake control module records the power supply voltage of the instrument cluster when the DTC was detected, and it is displayed in the Mazda Modular Diagnostic System (M-MDS).
|
VPWR*1
|
|
|
IG-ON_TIMER
|
hh:mm:ss*2
|
Elapsed time since ignition was switched ON (engine off or on)
|
• The electric parking brake control module constantly receives the elapsed time since the ignition was switched ON (engine off or on) sent via CAN communication from the instrument cluster.
• If a DTC is detected, the electric parking brake control module 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 Mazda Modular Diagnostic System (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 electric parking brake control module constantly receives the ignition switch status sent via CAN communication from the instrument cluster.
• If a DTC is detected, the electric parking brake control module records the ignition switch status when the DTC was detected, and it is displayed in the Mazda Modular Diagnostic System (M-MDS).
|
—
|
|
|
RPM_STATUS
|
Engine Stop/Under1500rpm/Over1500rpm/FAIL
|
Engine speed status
|
• The electric parking brake control module constantly receives the engine speed sent via CAN communication from the instrument cluster.
• If a DTC is detected, the electric parking brake control module records the engine speed when the DTC was detected, and it is displayed in the Mazda Modular Diagnostic System (M-MDS).
|
TACHOMTR*1
|
|
|
SHIFT_STATUS
|
P/N/
D/
R/
FAIL
|
Selector lever position status
|
• The electric parking brake control module constantly receives the selector lever position sent via CAN communication from the instrument cluster.
• If a DTC is detected, the electric parking brake control module records the selector lever position when the DTC was detected, and it is displayed in the Mazda Modular Diagnostic System (M-MDS).
|
—
|
|
|
TOTAL_DIST
|
km
|
Miles
|
Accumulated total traveled distance from completion of vehicle until electric parking brake control module detects DTC (Odometer value in instrument cluster)
|
The total traveled distance from which the electric parking brake control module 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 electric parking brake control module detects a DTC
|
The elapsed time from which the electric parking brake control module 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
|
Electric parking brake control module power supply voltage
|
—
|
VPWR
|
|
|
VSPD
|
KPH
|
MPH
|
Vehicle speed
|
—
|
—
|
|
VSPD_STATUS
|
Stop/0-10km/h/Over10km/h/FAIL
|
Vehicle speed status
|
• The electric parking brake control module constantly receives the vehicle speed sent via CAN communication from the instrument cluster.
• If a DTC is detected, the electric parking brake control module records the vehicle speed when the DTC was detected, and it is displayed in the Mazda Modular Diagnostic System (M-MDS).
|
SPEEDOMTR*1
|
|
Data Monitor Function
PID/data monitor table
|
Monitor item |
Unit/Operation |
Test condition |
Specification (Reference) |
|---|---|---|---|
|
Mazda Modular Diagnostic System (M-MDS) display |
|||
|
ACT_L_APPLY
|
Applied/Applying
|
Electric parking brake is applied
|
Applied
|
|
Electric parking brake is applying while electric parking brake switch is pulled up
|
Applying
|
||
|
ACT_L_REL
|
Released/Releasing
|
Electric parking brake is released
|
Released
|
|
Electric parking brake is releasing while electric parking brake switch is pushed down
|
Releasing
|
||
|
ACT_MAINTE
|
Off/Right_On/Left_On/On
|
Not maintenance mode
|
Off
|
|
Maintenance mode
|
On
|
||
|
ACT_R_APPLY
|
Applied/Applying
|
Electric parking brake is applied
|
Applied
|
|
Electric parking brake is applying while electric parking brake switch is pulled up
|
Applying
|
||
|
ACT_R_REL
|
Released/Releasing
|
Electric parking brake is released
|
Released
|
|
Electric parking brake is releasing while electric parking brake switch is pushed down
|
Releasing
|
||
|
EPB_SW
|
Neutral/Apply/Release/Error
|
Electric parking brake switch is in neutral position
|
Neutral
|
|
Electric parking brake switch is pulled up
|
Apply
|
||
|
Electric parking brake switch is pushed down
|
Release
|
||
|
MOTOR_L
|
A
|
Electric parking brake motor gear unit (LH) is operating
|
1—20 A
|
|
MOTOR_R
|
A
|
Electric parking brake motor gear unit (RH) is operating
|
1—20 A
|
|
VPWR
|
V
|
This PID indicates power supply voltage for electric parking brake control module.
|
|
|
VSPD
|
KPH, MPH
|
This PID indicates vehicle speed.
|
|
