#
ABS, ABS/TCS ON-BOARD DIAGNOSIS

BME040243000202

## On-Board Diagnostic (OBD) Test Description

• The OBD test inspects the integrity and function of the ABS/TCS and outputs the results when requested by the specific tests.
• On-board diagnostic test also:

  - Provides a quick inspection of the ABS.
  - Is 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 three 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/TCS HU/CM or 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 WDS or equivalent.

## DTCs Reading Procedure

### Using WDS or equivalent

1. Connect WDS or equivalent to the vehicle DLC-2 16-pin connector located on the left side of the steering column.

2. Retrieve DTC by WDS or equivalent.

### Without using WDS or equivalent

1. Connect the TBS terminal at DLC to body ground using a jumper wire.

2. Turn ignition key to ON (engine off).

3. After the ABS warning light illuminates for 3 seconds the ABS warning light indicates DTCs.

4. After completion of repairs, clear DTCs.

## Clearing DTCs Procedure

### Using WDS or equivalent

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

2. Erase DTC by WDS or equivalent.

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

  Note

  • After repairing the ABS wheel-speed sensor or replacing ABS/TCS HU/CM or ABS HU/CM, the ABS warning light may not go off when ignition key is turned ON. In this case, start engine and drive the vehicle at a speed of more than 10 km/h {6.2 mph} until the ABS warning light goes off.

### Without using WDS or equivalent

  Caution

  • Connecting the wrong DLC terminals may possibly cause a malfunction. Carefully connect the specified terminals only.

1. Connect the TBS terminal at the DLC to body ground using a jumper wire.

2. Turn the ignition key to ON (engine off).

3. Output all stored DTCs.

4. After verifying that the first code is repeated, depress the brake pedal 10 times at intervals of less than one second. (1 sec.)

5. Turn the ignition key to OFF and disconnect the jumper wire.

  Note

  • DTCs cannot be cleared if the following occur:

  - Intervals of depressing the brake pedal exceed one second. (1 sec.)
  - The brake switch has failed.

  • After repairing the ABS wheel-speed sensor or replacing ABS/TCS HU/CM or ABS HU/CM, the ABS warning light may not go off when ignition key is turned ON. In this case, start engine and drive the vehicle at a speed of more than 10 km/h {6.2 mph} until the ABS and/or BRAKE system warning light goes off.

## PID/Data Monitor and Record Procedure

1. Connect WDS or equivalent to the vehicle DLC-2 16-pin connector located on the left side of the steering column.

2. Access and monitor PIDs by WDS or equivalent.

## Active Command Modes Procedure

  Note

  • When driving the ABS motor and each valve forcibly, turn ABSVLVRLY on, and then each command on. ABSVLVRLY regulates the power supply for the ABS motor and eight valves.

1. Connect WDS or equivalent to the vehicle DLC-2 16-pin connector located on the left side of the steering column.

2. Turn the ignition switch to ON (Engine OFF) or start engine.

3. Activate active command modes by WDS or equivalent.

## DTC Table

DTC | ABS warning light flashing pattern | Diagnosis system component | Page
--- | --- | --- | ---
WDS or equivalent | ABS warning light
B1318 | 63 |  | ABS HU/CM power supply | (SeeDTC B1318 (63))
B1342 | 61 |  | ABS HU/CM (CM) | (See DTC B1342 (61))
C1095 | 54 |  | ABS motor, motor relay | (See DTC C1095 (54), C1096 (53))
C1096 | 53 |  | ABS motor, motor relay | (See DTC C1095 (54), C1096 (53))
C1140 | 30 |  | ABS HU/CM (pump) | (See DTC C1140 (30))
C1145 | 11 |  | Right front ABS wheel-speed sensor | (See DTC C1145 (11), C1155 (12), C1165 (13), C1175 (14))
C1148 | 41 |  | Right front ABS wheel-speed sensor/sensor rotor | (See DTC C1148 (41), C1158 (42), C1168 (43), C1178 (44), C1233 (46), C1234 (45), C1235 (47), C1236 (48))
C1155 | 12 |  | Left front ABS wheel-speed sensor | (See DTC C1145 (11), C1155 (12), C1165 (13), C1175 (14))
C1158 | 42 |  | Left front ABS wheel-speed sensor/sensor rotor | (See DTC C1148 (41), C1158 (42), C1168 (43), C1178 (44), C1233 (46), C1234 (45), C1235 (47), C1236 (48))
C1165 | 13 |  | Right rear ABS wheel-speed sensor | (See DTC C1145 (11), C1155 (12), C1165 (13), C1175 (14))
C1168 | 43 |  | Right rear ABS wheel-speed sensor/sensor rotor | (See DTC C1148 (41), C1158 (42), C1168 (43), C1178 (44), C1233 (46), C1234 (45), C1235 (47), C1236 (48))
C1175 | 14 |  | Left rear wheel-speed sensor | (See DTC C1145 (11), C1155 (12), C1165 (13), C1175 (14))
C1178 | 44 |  | Left rear ABS wheel-speed sensor/sensor rotor | (See DTC C1148 (41), C1158 (42), C1168 (43), C1178 (44), C1233 (46), C1234 (45), C1235 (47), C1236 (48))
C1186 | 51 |  | Fail-safe relay | (See DTC C1186 (51), C1266 (52))
C1194 | 24 |  | Left front ABS pressure reduction solenoid valve | (See DTC C1194 (24), C1198 (25), C1210 (22), C1214 (23), C1242 (28), C1246 (26), C1250 (29), C1254 (27))
C1198 | 25 |  | Left front ABS pressure retention solenoid valve | (See DTC C1194 (24), C1198 (25), C1210 (22), C1214 (23), C1242 (28), C1246 (26), C1250 (29), C1254 (27))
C1210 | 22 |  | Right front ABS pressure reduction solenoid valve | (See DTC C1194 (24), C1198 (25), C1210 (22), C1214 (23), C1242 (28), C1246 (26), C1250 (29), C1254 (27))
C1214 | 23 |  | Right front ABS pressure retention solenoid valve | (See DTC C1194 (24), C1198 (25), C1210 (22), C1214 (23), C1242 (28), C1246 (26), C1250 (29), C1254 (27))
C1233 | 46 |  | Left front ABS wheel-speed sensor/sensor rotor | (See DTC C1148 (41), C1158 (42), C1168 (43), C1178 (44), C1233 (46), C1234 (45), C1235 (47), C1236 (48))
C1234 | 45 |  | Right front ABS wheel-speed sensor/sensor rotor | (See DTC C1148 (41), C1158 (42), C1168 (43), C1178 (44), C1233 (46), C1234 (45), C1235 (47), C1236 (48))
C1235 | 47 |  | Right rear ABS wheel-speed sensor/sensor rotor | (See DTC C1148 (41), C1158 (42), C1168 (43), C1178 (44), C1233 (46), C1234 (45), C1235 (47), C1236 (48))
C1236 | 48 |  | Left rear ABS wheel-speed sensor/sensor rotor | (See DTC C1148 (41), C1158 (42), C1168 (43), C1178 (44), C1233 (46), C1234 (45), C1235 (47), C1236 (48))
C1242 | 28 |  | Left rear ABS pressure reduction solenoid valve | (See DTC C1194 (24), C1198 (25), C1210 (22), C1214 (23), C1242 (28), C1246 (26), C1250 (29), C1254 (27))
C1246 | 26 |  | Right rear ABS pressure reduction solenoid valve | (See DTC C1194 (24), C1198 (25), C1210 (22), C1214 (23), C1242 (28), C1246 (26), C1250 (29), C1254 (27))
C1250 | 29 |  | Left rear ABS pressure retention solenoid valve | (See DTC C1194 (24), C1198 (25), C1210 (22), C1214 (23), C1242 (28), C1246 (26), C1250 (29), C1254 (27))
C1254 | 27 |  | Right rear ABS pressure retention solenoid valve | (See DTC C1194 (24), C1198 (25), C1210 (22), C1214 (23), C1242 (28), C1246 (26), C1250 (29), C1254 (27))
C1266 | 52 |  | Fail-safe relay | (See DTC C1186 (51), C1266 (52))
C1510 | 32 |  | Right front solenoid valve, ABS motor, right front ABS wheel-speed sensor/sensor rotor | (See DTC C1510 (32), C1511 (33), C1512 (34), C1513 (35))
C1511 | 33 |  | Left front solenoid valve, ABS motor, left front ABS wheel-speed sensor/sensor rotor | (See DTC C1510 (32), C1511 (33), C1512 (34), C1513 (35))
C1512 | 34 |  | Right rear solenoid valve, ABS motor, Right rear ABS wheel-speed sensor/sensor rotor | (See DTC C1510 (32), C1511 (33), C1512 (34), C1513 (35))
C1513 | 35 |  | Left rear solenoid valve, ABS motor, left rear ABS wheel-speed sensor/sensor rotor | (See DTC C1510 (32), C1511 (33), C1512 (34), C1513 (35))
C1117*1, 2 | 17*1, 2 |  | RPM input circuit failure | (See DTC C1117 (17))
C1118*1 | 82*1 |  | Traction control indicated torque reduction circuit failure | (See DTC C1118 (82))
C1119*1, 2 | 83*1, 2 |  | Traction control actual torque reduction circuit failure | (See DTC C1119 (83))
U2021*1 | 87*1 |  | Invalid/fault data received (non SCP) | (See DTC U2021 (87))
C1508*2 | 92*2 |  | TCS control | (See DTC C1508 (92))
U0100*2 | 86*2 |  | CAN communication system | (See DTC U0100 (86))
U0073*2 | 85*2 |  | CAN communication system | (See DTC U0073 (85))

  *1 :
With TCS (L3, AJ)
  *2 :
With TCS (MZR-CD (RF Turbo))

## PID/DATA Monitor Table

PID Name (Definition) | Unit/Condition | Condition/Specification | Action | ABS HU/CM terminal
--- | --- | --- | --- | ---
ABS LAMP (ABS warning light output state) | ON/OFF | • ABS warning light is illuminated: ON • ABS warning light is illuminated: OFF | Inspect ABS warning light. | W
ABSLF I (Left front ABS pressure retention solenoid valve output state) | ON/OFF | • During ABS and/or EBD control: ON/OFF (solenoid valve is activated/deactivated) • Not ABS and/or EBD control: OFF (solenoid valve is deactivated) | Internal fault of ABS HU/CM Replace ABS HU/CM. (See ABS HU/CM REMOVAL/INSTALLATION) (See ABS/TCS HU/CM REMOVAL/INSTALLATION) | -
ABSLF O (Left front ABS pressure reduction solenoid valve output state) | ON/OFF | • During ABS and/or EBD control: ON/OFF (solenoid valve is activated/deactivated) • Not ABS and/or EBD control: OFF (solenoid valve is deactivated) | Internal fault of ABS HU/CM Replace ABS HU/CM. (See ABS HU/CM REMOVAL/INSTALLATION) (See ABS/TCS HU/CM REMOVAL/INSTALLATION) | -
ABSLR I (Left rear ABS pressure retention solenoid valve output state) | ON/OFF | • During ABS and/or EBD control: ON/OFF (solenoid valve is activated/deactivated) • Not ABS and/or EBD control: OFF (solenoid valve is deactivated) | Internal fault of ABS HU/CM Replace ABS HU/CM. (See ABS HU/CM REMOVAL/INSTALLATION) (See ABS/TCS HU/CM REMOVAL/INSTALLATION) | -
ABSLR O (Left rear ABS pressure reduction solenoid valve output state) | ON/OFF | • During ABS and/or EBD control: ON/OFF (solenoid valve is activated/deactivated) • Not ABS and/or EBD control: OFF (solenoid valve is deactivated) | Internal fault of ABS HU/CM Replace ABS HU/CM. (See ABS HU/CM REMOVAL/INSTALLATION) (See ABS/TCS HU/CM REMOVAL/INSTALLATION) | -
ABS RF I (Right front ABS pressure retention solenoid valve output state) | ON/OFF | • During ABS and/or EBD control: ON/OFF (solenoid valve is activated/deactivated) • Not ABS and/or EBD control: OFF (solenoid valve is deactivated) | Internal fault of ABS HU/CM Replace ABS HU/CM. (See ABS HU/CM REMOVAL/INSTALLATION) (See ABS/TCS HU/CM REMOVAL/INSTALLATION) | -
ABSRF O (Right front ABS pressure reduction solenoid valve output state) | ON/OFF | • During ABS and/or EBD control: ON/OFF (solenoid valve is activated/deactivated) • Not ABS and/or EBD control: OFF (solenoid valve is deactivated) | Internal fault of ABS HU/CM Replace ABS HU/CM. (See ABS HU/CM REMOVAL/INSTALLATION) (See ABS/TCS HU/CM REMOVAL/INSTALLATION) | -
ABSRR I (Right rear ABS pressure retention solenoid valve output state) | ON/OFF | • During ABS and/or EBD control: ON/OFF (solenoid valve is activated/deactivated) • Not ABS and/or EBD control: OFF (solenoid valve is deactivated) | Internal fault of ABS HU/CM Replace ABS HU/CM. (See ABS HU/CM REMOVAL/INSTALLATION) (See ABS/TCS HU/CM REMOVAL/INSTALLATION) | -
ABSRR O (Right rear ABS pressure reduction solenoid valve output state) | ON/OFF | • During ABS and/or EBD control: ON/OFF (solenoid valve is activated/deactivated) • Not ABS and/or EBD control: OFF (solenoid valve is deactivated) | Internal fault of ABS HU/CM Replace ABS HU/CM. (See ABS HU/CM REMOVAL/INSTALLATION) (See ABS/TCS HU/CM REMOVAL/INSTALLATION) | -
BOO ABS (Brake pedal switch input) | ON/OFF | • Brake pedal is depressed: ON • Brake pedal is released: OFF | Inspect brake switch. (See BRAKE SWITCH INSPECTION) | Y
BRAKE LMP (BRAKE warning light output state) | ON/OFF | • BRAKE system warning light is illuminated: ON • BRAKE system warning light is not illuminated: OFF | Inspect BRAKE system warning light. | W
LF WSPD (Left front ABS wheel-speed sensor input) | KPH/MPH | • Vehicle is stopped: 0 KPH {0 MPH} • Indicate vehicle speed | Inspect ABS wheel-speed sensor/sensor rotor. (See FRONT/REAR ABS WHEEL-SPEED SENSOR INSPECTION) | I, E
LR WSPD (Left rear ABS wheel-speed sensor input) | KPH/MPH | • Vehicle is stopped: 0 KPH {0 MPH} • Indicate vehicle speed | Inspect ABS wheel-speed sensor/sensor rotor. (See FRONT/REAR ABS WHEEL-SPEED SENSOR INSPECTION) | C, F
ABSPMPRLY (ABS motor relay output state) | ON/OFF | • During ABS and/or EBD control: ON/OFF (ABS motor is activated/deactivated) • Not ABS and/or EBD control: OFF (ABS motor is deactivated) | Inspect ABS HU/CM connector and ABS HU/CM. (See ABS HU/CM SYSTEM INSPECTION) (See ABS/TCS HU/CM SYSTEM INSPECTION) | -
PMP MOTOR (ABS motor output state) | ON/OFF | • During ABS and/or EBD control: ON/OFF (ABS motor is activated/deactivated) • Not ABS and/or EBD control: OFF (ABS motor is deactivated) | Inspect ABS HU/CM connector and ABS HU/CM. (See ABS HU/CM SYSTEM INSPECTION) (See ABS/TCS HU/CM SYSTEM INSPECTION) | -
RF WSPD (Right front ABS wheel-speed sensor input) | KPH/MPH | • Vehicle is stopped: 0 KPH {0 MPH} • indicate vehicle speed | Inspect ABS wheel-speed sensor/sensor rotor. (See FRONT/REAR ABS WHEEL-SPEED SENSOR INSPECTION) | D, G
RR WSPD (Right rear ABS wheel-speed sensor input) | KPH/MPH | • Vehicle is stopped: 0 KPH {0 MPH} • indicate vehicle speed | Inspect ABS wheel-speed sensor/sensor rotor. (See FRONT/REAR ABS WHEEL-SPEED SENSOR INSPECTION) | A, B
ABSVLVRLY (Fail-safe relay output state) | ON/OFF | • Ignition switch is at ON: ON • Other condition (Power supply circuit is open circuit): OFF | Inspect ABS HU/CM connector and ABS HU/CM (See ABS HU/CM SYSTEM INSPECTION) (See ABS/TCS HU/CM SYSTEM INSPECTION) | -
RPM* (Engine speed) | RPM | • Engine stopped: • Engine idling: 650-750 RPM | Inspect PCM. (See PCM INSPECTION [L3]) (See PCM INSPECTION [AJ] (VIN: JMZ LW19J7*# 300001-, JM0 LW10J300 300001-301405, JM6 LW10J300 300001-, JM8 LW28J**# 300001-301513)) (See PCM INSPECTION [AJ] (VIN: JM0 LW10J300 301406-, JMZ LW69J7*# 307683-, JM8 LW28J**# 301514-, JM8 LW28A**# 301514- (Assumed)))
(See PCM INSPECTION [MZR-CD (RF Turbo)])
S (L3, AJ)
- (MZR-CD (RF Turbo))
TRAC SW* (TCS OFF switch) | ON/OFF | • TCS OFF switch is depressed: ON • TCS OFF switch is released: OFF | Inspect TCS OFF switch. (See TCS OFF SWITCH INSPECTION) | P
ABS VOLT (System battery voltage value) | V | • Ignition key ON: B+ • Idle: B+ | Inspect power supply circuit. (See ABS HU/CM INSPECTION) | Z

  * :
with TCS

## Active Command Modes Table

Command Name | Definition | Operation | Note
--- | --- | --- | ---
PMP MOTOR | ABS motor | ON/OFF | Ignition key at ON (engine OFF), and driving
RF OUTLET | Right front ABS pressure reduction solenoid valve | ON/OFF
RF INLET | Right front ABS pressure retention solenoid valve | ON/OFF
LF OUTLET | Left front ABS pressure reduction solenoid valve | ON/OFF
LF INLET | Left front ABS pressure retention solenoid valve | ON/OFF
RR OUTLET | Right rear ABS pressure reduction solenoid valve | ON/OFF
RR INLET | Right rear ABS pressure retention solenoid valve | ON/OFF
LR OUTLET | Left rear ABS pressure reduction solenoid valve | ON/OFF
LR INLET | Left rear ABS pressure retention solenoid valve | ON/OFF
ABSVLVRLY | Fail-safe relay | ON/OFF
CHK TRAC ABS* | Check traction control indicator | ON/OFF
TRAC OFF* | Traction control off indicator | ON/OFF
ENG TQR* | Engine torque reduction signal output | Nm
VS OUTPUT | Vehicle speed signal | KPH/MPH

  * :
For TCS

  Note

  • When operating the ABS motor and each valve forcibly, turn ABSVLVRLY on, and then each command on, ABSVLVRLY regulates the power supply for the ABS motor and eight valves.