ON-BOARD DIAGNOSIS [ABS]

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On-Board Diagnostic (OBD) Test Description

• The OBD test inspects the integrity and function of the ABS and outputs the results when requested by the specific tests.

• On-board diagnostic test also:

― Provides a quick inspection of the ABS usually performed at the start of each diagnostic procedure.

― Provides verification after repairs to ensure that no other faults occurred during service.

• The OBD test is divided into 3 tests:

― Read/clear diagnostic results, PID monitor and record and active command modes.

Read/clear diagnostic results

• This function allows you to read or clear DTCs in the ABS HU/CM memory.

PID/Data monitor and record

• This function allows you to access certain data values, input signals, calculated values, and system status information.

Active command modes

• This function allows you to control devices through the M-MDS.

Reading DTCs Procedure

1. Connect the M-MDS to the DLC-2 connector.

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2. After the vehicle is identified, select the following items from the initial screen of the M-MDS.

• When using the IDS (laptop PC)

1. Select the “Toolbox” tab.

2. Select “Self Test”.

3. Select “Modules”.

4. Select “ABS”.

• When using the PDS (Pocket PC)

1. Select “Module Tests”.

2. Select “ABS”.

3. Select “Self Test”.

3. Verify the DTC according to the directions on the screen.

• If any DTCs are displayed, perform troubleshooting according to the corresponding DTC inspection.

4. After completion of repairs, clear all DTCs stored in the DSC. (See Clearing DTCs Procedures.)

Clearing DTCs Procedures

1. Connect the M-MDS to the DLC-2 connector.

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2. After the vehicle is identified, select the following items from the initial screen of the M-MDS.

• When using the IDS (laptop PC)

1. Select the “Toolbox” tab.

2. Select “Self Test”.

3. Select “Modules”.

4. Select “ABS”.

• When using the PDS (Pocket PC)

1. Select “Module Tests”.

2. Select “ABS”.

3. Select “Self Test”.

3. Verify the DTC according to the directions on the screen.

4. Press the clear button on the DTC screen to clear the DTC.

5. Verify that no DTCs are displayed.

PID/Data Monitor and Record Procedure

1. Connect the M-MDS to the DLC-2 connector.

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2. After the vehicle is identified, select the following items from the initial screen of the M-MDS.

• When using the IDS (laptop PC)

1. Select the “Toolbox” tab.

2. Select “DataLogger”.

3. Select “Modules”.

4. Select “ABS”.

• When using the PDS (Pocket PC)

1. Select “Module Tests”.

2. Select “ABS”.

3. Select “DataLogger”.

3. Select the applicable PID from the PID table.

4. Verify the PID data according to the directions on the screen.

Note

• The PID/Data monitor function is used for monitoring the calculated value. Therefore, if the monitored value of the output parts is not within the specification, inspection of the monitored value of input parts corresponding to applicable output part control is necessary. In addition, because the system does not display output part malfunction as abnormality in the monitored value, it is necessary to inspect the output part individually using a active command modes function.

Active Command Modes Procedure

Note

• Performing the active command modes function while the engine is running could result in the DTC U2064 being stored in the instrument cluster. Therefore, perform the active command mode inspection while the engine is stopped. If the active command mode inspection is accidentally performed while the engine is running, inspect the instrument cluster for the recorded DTCs, and then clear any that have been recorded.

1. Connect the M-MDS to the DLC-2 connector.

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2. After the vehicle is identified, select the following items from the initial screen of the M-MDS.

• When using the IDS (laptop PC)

1. Select the “Toolbox” tab.

2. Select “DataLogger”.

3. Select “Modules”.

4. Select “ABS”.

• When using the PDS (Pocket PC)

1. Select “Module Tests”.

2. Select “ABS”.

3. Select “DataLogger”.

3. Select the active command modes from the PID table.

4. Perform the active command modes, inspect the operations for each parts.

• If there is no operation sound from the relay, motor, and solenoid after the active command mode inspection is performed, it is possible that there is an open or short circuit in the wiring harness, relay, motor or solenoid, or sticking and operation malfunction.

DTC Table

DTC

System malfunction location

Page

M-MDS

B1317

Power supply system

(See DTC B1317, B1318 [ABS].)

B1318

Power supply system

(See DTC B1317, B1318 [ABS].)

B1342

ABS CM (internal malfunction)

(See DTC B1342, C1267 [ABS].)

C1095

Pump motor, motor relay

(See DTC C1095 [ABS].)

C1141

LF ABS sensor rotor

(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)

C1142

RF ABS sensor rotor

(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)

C1143

LR ABS sensor rotor

(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)

C1144

RR ABS sensor rotor

(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)

C1145

RF ABS wheel-speed sensor

(See DTC C1145, C1155, C1165, C1175 [ABS].)

C1155

LF ABS wheel-speed sensor

(See DTC C1145, C1155, C1165, C1175 [ABS].)

C1165

RR ABS wheel-speed sensor

(See DTC C1145, C1155, C1165, C1175 [ABS].)

C1175

LR ABS wheel-speed sensor

(See DTC C1145, C1155, C1165, C1175 [ABS].)

C1233

LF ABS wheel-speed sensor/ABS sensor rotor

(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)

C1234

RF ABS wheel-speed sensor/ABS sensor rotor

(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)

C1235

RR ABS wheel-speed sensor/ABS sensor rotor

(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)

C1236

LR ABS wheel-speed sensor/ABS sensor rotor

(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)

C1267

ABS HU/CM (internal malfunction)

(See DTC B1342, C1267 [ABS].)

C1446

Brake switch

(See DTC C1446 (EXCEPT MZ-CD 1.6 (Y6)) [ABS].)

(See DTC C1446 (MZ-CD 1.6 (Y6)) [ABS].)

U1900

CAN line

(See DTC U1900, U2012 [ABS].)

U2012

CAN line

(See DTC U1900, U2012 [ABS].)

DTC	System malfunction location	Page
B1317	Power supply system	(See DTC B1317, B1318 [ABS].)
B1318	Power supply system	(See DTC B1317, B1318 [ABS].)
B1342	ABS CM (internal malfunction)	(See DTC B1342, C1267 [ABS].)
C1095	Pump motor, motor relay	(See DTC C1095 [ABS].)
C1141	LF ABS sensor rotor	(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)
C1142	RF ABS sensor rotor	(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)
C1143	LR ABS sensor rotor	(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)
C1144	RR ABS sensor rotor	(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)
C1145	RF ABS wheel-speed sensor	(See DTC C1145, C1155, C1165, C1175 [ABS].)
C1155	LF ABS wheel-speed sensor	(See DTC C1145, C1155, C1165, C1175 [ABS].)
C1165	RR ABS wheel-speed sensor	(See DTC C1145, C1155, C1165, C1175 [ABS].)
C1175	LR ABS wheel-speed sensor	(See DTC C1145, C1155, C1165, C1175 [ABS].)
C1233	LF ABS wheel-speed sensor/ABS sensor rotor	(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)
C1234	RF ABS wheel-speed sensor/ABS sensor rotor	(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)
C1235	RR ABS wheel-speed sensor/ABS sensor rotor	(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)
C1236	LR ABS wheel-speed sensor/ABS sensor rotor	(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)
C1267	ABS HU/CM (internal malfunction)	(See DTC B1342, C1267 [ABS].)
C1446	Brake switch	(See DTC C1446 (EXCEPT MZ-CD 1.6 (Y6)) [ABS].) (See DTC C1446 (MZ-CD 1.6 (Y6)) [ABS].)
U1900	CAN line	(See DTC U1900, U2012 [ABS].)
U2012	CAN line	(See DTC U1900, U2012 [ABS].)

PID/DATA Monitor Table

PID name (definition)

Unit/Condition

Operation condition (reference)

Action

ABS HU/CM terminal

BOO_ABS

(Brake pedal switch input)

On/Off

•  Brake pedal depressed: On

•  Brake pedal released: Off

Inspect the brake switch.

(See BRAKE SWITCH INSPECTION [EXCEPT MZ-CD 1.6 (Y6)].)

(See BRAKE SWITCH INSPECTION [MZ-CD 1.6 (Y6)].)

—

CCNTABS

(Number of continuous codes)

—

•  DTCs detected:
1—255

•  No DTCs detected: 0

Perform the DTC inspection.

(See DTC Table.)

—

LF_WSPD

(Left front ABS wheel-speed sensor input)

KPH, MPH

•  Vehicle stopped: 0 KPH, 0 MPH

•  Vehicle running: Vehicle speed

Inspect the ABS wheel-speed sensor.

(See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)

I, K

LR_WSPD

(Left rear ABS wheel-speed sensor input)

KPH, MPH

•  Vehicle stopped: 0 KPH, 0 MPH

•  Vehicle running: Vehicle speed

Inspect the ABS wheel-speed sensor.

(See REAR ABS WHEEL-SPEED SENSOR INSPECTION.)

U, W

RF_WSPD

(Right front ABS wheel-speed sensor input)

KPH, MPH

•  Vehicle stopped: 0 KPH, 0 MPH

•  Vehicle running: Vehicle speed

Inspect the ABS wheel-speed sensor.

(See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)

Q, O

RR_WSPD

(Right rear ABS wheel-speed sensor input)

KPH, MPH

•  Vehicle stopped: 0 KPH, 0 MPH

•  Vehicle running: Vehicle speed

Inspect the ABS wheel-speed sensor.

(See REAR ABS WHEEL-SPEED SENSOR INSPECTION.)

E, C

PID name (definition)	Unit/Condition	Operation condition (reference)	Action	ABS HU/CM terminal
BOO_ABS (Brake pedal switch input)	On/Off	• Brake pedal depressed: On • Brake pedal released: Off	Inspect the brake switch. (See BRAKE SWITCH INSPECTION [EXCEPT MZ-CD 1.6 (Y6)].) (See BRAKE SWITCH INSPECTION [MZ-CD 1.6 (Y6)].)	—
CCNTABS (Number of continuous codes)	—	• DTCs detected: 1—255 • No DTCs detected: 0	Perform the DTC inspection. (See DTC Table.)	—
LF_WSPD (Left front ABS wheel-speed sensor input)	KPH, MPH	• Vehicle stopped: 0 KPH, 0 MPH • Vehicle running: Vehicle speed	Inspect the ABS wheel-speed sensor. (See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)	I, K
LR_WSPD (Left rear ABS wheel-speed sensor input)	KPH, MPH	• Vehicle stopped: 0 KPH, 0 MPH • Vehicle running: Vehicle speed	Inspect the ABS wheel-speed sensor. (See REAR ABS WHEEL-SPEED SENSOR INSPECTION.)	U, W
RF_WSPD (Right front ABS wheel-speed sensor input)	KPH, MPH	• Vehicle stopped: 0 KPH, 0 MPH • Vehicle running: Vehicle speed	Inspect the ABS wheel-speed sensor. (See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)	Q, O
RR_WSPD (Right rear ABS wheel-speed sensor input)	KPH, MPH	• Vehicle stopped: 0 KPH, 0 MPH • Vehicle running: Vehicle speed	Inspect the ABS wheel-speed sensor. (See REAR ABS WHEEL-SPEED SENSOR INSPECTION.)	E, C

Active Command Modes Table

Command name

Output part

Operation

Operating condition

PMP_MOTOR

Pump motor

On/Off

Ignition switch at ON

RF_OUTLET

RF outlet solenoid valve

RF_INLET

RF inlet solenoid valve

LF_OUTLET

LF outlet solenoid valve

LF_INLET

LF inlet solenoid valve

RR_OUTLET

RR outlet solenoid valve

RR_INLET

RR inlet solenoid valve

LR_OUTLET

LR outlet solenoid valve

LR_INLET

LR inlet solenoid valve

DTC	System malfunction location	Page
M-MDS	System malfunction location	Page
B1317	Power supply system	(See DTC B1317, B1318 [ABS].)
B1318	Power supply system	(See DTC B1317, B1318 [ABS].)
B1342	ABS CM (internal malfunction)	(See DTC B1342, C1267 [ABS].)
C1095	Pump motor, motor relay	(See DTC C1095 [ABS].)
C1141	LF ABS sensor rotor	(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)
C1142	RF ABS sensor rotor	(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)
C1143	LR ABS sensor rotor	(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)
C1144	RR ABS sensor rotor	(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)
C1145	RF ABS wheel-speed sensor	(See DTC C1145, C1155, C1165, C1175 [ABS].)
C1155	LF ABS wheel-speed sensor	(See DTC C1145, C1155, C1165, C1175 [ABS].)
C1165	RR ABS wheel-speed sensor	(See DTC C1145, C1155, C1165, C1175 [ABS].)
C1175	LR ABS wheel-speed sensor	(See DTC C1145, C1155, C1165, C1175 [ABS].)
C1233	LF ABS wheel-speed sensor/ABS sensor rotor	(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)
C1234	RF ABS wheel-speed sensor/ABS sensor rotor	(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)
C1235	RR ABS wheel-speed sensor/ABS sensor rotor	(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)
C1236	LR ABS wheel-speed sensor/ABS sensor rotor	(See DTC C1141, C1142, C1143, C1144, C1233, C1234, C1235, C1236 [ABS].)
C1267	ABS HU/CM (internal malfunction)	(See DTC B1342, C1267 [ABS].)
C1446	Brake switch	(See DTC C1446 (EXCEPT MZ-CD 1.6 (Y6)) [ABS].) (See DTC C1446 (MZ-CD 1.6 (Y6)) [ABS].)
U1900	CAN line	(See DTC U1900, U2012 [ABS].)
U2012	CAN line	(See DTC U1900, U2012 [ABS].)

Command name	Output part	Operation	Operating condition
PMP_MOTOR	Pump motor	On/Off	Ignition switch at ON
RF_OUTLET	RF outlet solenoid valve
RF_INLET	RF inlet solenoid valve
LF_OUTLET	LF outlet solenoid valve
LF_INLET	LF inlet solenoid valve
RR_OUTLET	RR outlet solenoid valve
RR_INLET	RR inlet solenoid valve
LR_OUTLET	LR outlet solenoid valve
LR_INLET	LR inlet solenoid valve