ON-BOARD DIAGNOSIS [ABS]

B3E040243000W02

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 WDS or equivalent.

Reading DTCs Procedure

1. Connect the WDS or equivalent to the vehicle DLC-2 connector.

2. Retrieve DTC using the WDS or equivalent.

Clearing DTCs Procedures

1. After repairs have been made, perform the DTCs reading procedure.

2. Erase DTC using the WDS or equivalent.

3. Ensure that the customer's concern has been resolved.

PID/Data Monitor and Record Procedure

1. Connect the WDS or equivalent to the vehicle DLC-2 connector.

2. Access and monitor PIDs using the WDS or equivalent.

Active Command Modes Procedure

1. Connect the WDS or equivalent to the vehicle DLC-2 16-pin connector.

2. Turn the ignition switch to the ON position (engine off) or start the engine.

3. Activate active command modes using the WDS or equivalent.

DTC Table


DTC	System malfunction location	Page
WDS or equivalent	System malfunction location	Page
B1317	Power supply system	(See DTC B1317, B1318 [ABS].)
B1318	Power supply system	(See DTC B1317, B1318 [ABS].)
B1342	ABS HU/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 [ABS].) (See DTC C1446 [ABS (MZ-CD 1.6 (Y6))].)
U1900	CAN line	(See DTC U1900, U2012, U2523 [ABS].)
U2012	CAN line	(See DTC U1900, U2012, U2523 [ABS].)
U2523	CAN line	(See DTC U1900, U2012, U2523 [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.	-
CCNTABS (Number of continuous codes)	-	• DTCs detected: 1-255 • No DTCs detected: 0	Perform the DTC inspection.	-
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.	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.	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.	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.	E, C

Active Command Modes Table


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