#
ABS (ABS/TCS) ON-BOARD DIAGNOSIS

id040200807300

## On-Board Diagnostic (OBD) Test Description

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

  - Provides a quick inspection of the ABS (ABS/TCS) 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 (ABS/TCS) 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 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 WDS or equivalent to the vehicle DLC-2 connector.

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

## Active Command Modes Procedure

  Note

  • When driving, the ABS motor and each valve automatically turn ABS_POWER on, and then each command on. ABS_POWER regulates the power supply for the ABS motor and 8 valves.

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

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

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

## DTC Table

DTC | Diagnosis system component | Page
--- | --- | ---
WDS or equiva- lent
B1318 | ABS (ABS/TCS) power supply | (See DTC B1318 [ABS (ABS/TCS)])
B1342 | ABS (ABS/TCS) HU/CM | (See DTC B1342 [ABS (ABS/TCS)])
B2477 | Module configuration | (See DTC B2477 [ABS (ABS/TCS)])
C1095 | Motor relay, pump motor | (See DTC C1095, C1096 [ABS (ABS/TCS)])
C1096 | Motor relay, pump motor | (See DTC C1095, C1096 [ABS (ABS/TCS)])
C1119 | Engine control system, torque reduction inhibit signal line | (See DTC C1119 [ABS (ABS/TCS)])
C1140 | ABS (ABS/TCS) HU/CM (pump) | (See DTC C1140 [ABS (ABS/TCS)])
C1145 | Right front ABS wheel-speed sensor | (See DTC C1145, C1155, C1165, C1175 [ABS (ABS/TCS)])
C1148 | Right front ABS wheel-speed sensor/sensor rotor | (See DTC C1148, C1158, C1168, C1178, C1233, C1234, C1235, C1236 [ABS (ABS/TCS)])
C1155 | Left front ABS wheel-speed sensor | (See DTC C1145, C1155, C1165, C1175 [ABS (ABS/TCS)])
C1158 | Left front ABS wheel-speed sensor/sensor rotor | (See DTC C1148, C1158, C1168, C1178, C1233, C1234, C1235, C1236 [ABS (ABS/TCS)])
C1165 | Right rear ABS wheel-speed sensor | (See DTC C1145, C1155, C1165, C1175 [ABS (ABS/TCS)])
C1168 | Right rear ABS wheel-speed sensor/sensor rotor | (See DTC C1148, C1158, C1168, C1178, C1233, C1234, C1235, C1236 [ABS (ABS/TCS)])
C1175 | Left rear ABS wheel-speed sensor | (See DTC C1145, C1155, C1165, C1175 [ABS (ABS/TCS)])
C1178 | Left rear ABS wheel-speed sensor/sensor rotor | (See DTC C1148, C1158, C1168, C1178, C1233, C1234, C1235, C1236 [ABS (ABS/TCS)])
C1186 | Fail-safe relay | (See DTC C1186, C1266 [ABS (ABS/TCS)])
C1194 | Left front pressure reduction solenoid valve | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254 [ABS (ABS/TCS)])
C1198 | Left front pressure retention solenoid valve | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254 [ABS (ABS/TCS)])
C1210 | Right front pressure reduction solenoid valve | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254 [ABS (ABS/TCS)])
C1214 | Right front pressure retention solenoid valve | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254 [ABS (ABS/TCS)])
C1233 | Left front ABS wheel-speed sensor/sensor rotor | (See DTC C1148, C1158, C1168, C1178, C1233, C1234, C1235, C1236 [ABS (ABS/TCS)])
C1234 | Right front ABS wheel-speed sensor/sensor rotor | (See DTC C1148, C1158, C1168, C1178, C1233, C1234, C1235, C1236 [ABS (ABS/TCS)])
C1235 | Right rear ABS wheel-speed sensor/sensor rotor | (See DTC C1148, C1158, C1168, C1178, C1233, C1234, C1235, C1236 [ABS (ABS/TCS)])
C1236 | Left rear ABS wheel-speed sensor/sensor rotor | (See DTC C1148, C1158, C1168, C1178, C1233, C1234, C1235, C1236 [ABS (ABS/TCS)])
C1242 | Left rear pressure reduction solenoid valve | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254 [ABS (ABS/TCS)])
C1246 | Right rear pressure reduction solenoid valve | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254 [ABS (ABS/TCS)])
C1250 | Left rear pressure retention solenoid valve | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254 [ABS (ABS/TCS)])
C1254 | Right rear pressure retention solenoid valve | (See DTC C1194, C1198, C1210, C1214, C1242, C1246, C1250, C1254 [ABS (ABS/TCS)])
C1266 | Fail-safe relay | (See DTC C1186, C1266 [ABS (ABS/TCS)])
C1414 | ABS (ABS/TCS) HU/CM | (See DTC C1414 [ABS (ABS/TCS)])
C1508 | TCS control | (See DTC C1508 [ABS (ABS/TCS)])
C1510 | Right front solenoid valve, motor or ABS wheel-speed sensor/sensor rotor | (See DTC C1510, C1511, C1512, C1513 [ABS (ABS/TCS)])
C1511 | Left front solenoid valve, motor or ABS wheel-speed sensor/sensor rotor | (See DTC C1510, C1511, C1512, C1513 [ABS (ABS/TCS)])
C1512 | Right rear solenoid valve, motor or ABS wheel-speed sensor/sensor rotor | (See DTC C1510, C1511, C1512, C1513 [ABS (ABS/TCS)])
C1513 | Left rear solenoid valve, motor or ABS wheel-speed sensor/sensor rotor | (See DTC C1510, C1511, C1512, C1513 [ABS (ABS/TCS)])
U0073 | CAN system communication error | (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM])
U0100 | Communication error to PCM | (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM])
U0101 | Communication error to TCM | (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM])
U0155 | Communication error to instrument cluster | (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM])
U2021 | Engine coolant temperature | (See DTC U2021 [ABS (ABS/TCS)])

## PID/DATA Monitor Table

PID Name (Definition) | Unit/Condition | Condition/Specification | Action | ABS (ABS/TCS) HU/CM terminal
--- | --- | --- | --- | ---
ABS_LAMP (ABS warning light driver output state) | On/Off | • ABS warning light is illuminated: On • ABS warning light is not illuminated: Off | Inspect ABS warning light. | -
ABSLF_I (Left front ABS pressure retention solenoid valve output state) | On/Off | • During ABS control: On/Off (solenoid valve is activated/deactivated) • No ABS control: Off (solenoid valve is deactivated) | Internal fault of ABS (ABS/TCS) HU/CM. Replace ABS (ABS/TCS) HU/CM. (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [MTX].) (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [ATX].) | -
ABSLF_O (Left front ABS pressure reduction solenoid valve output state) | On/Off | • During ABS control: On/Off (solenoid valve is activated/deactivated) • No ABS control: Off (solenoid valve is deactivated) | Internal fault of ABS (ABS/TCS) HU/CM. Replace ABS (ABS/TCS) HU/CM. (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [MTX].) (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [ATX].) | -
ABSLR_I (Left rear ABS pressure retention solenoid valve output state) | On/Off | • During ABS or EBD control: On/Off (solenoid valve is activated/deactivated) • No ABS and EBD control: Off (solenoid valve is deactivated) | Internal fault of ABS (ABS/TCS) HU/CM. Replace ABS (ABS/TCS) HU/CM. (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [MTX].) (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [ATX].) | -
ABSLR_O (Left rear ABS pressure reduction solenoid valve output state) | On/Off | • During ABS or EBD control: On/Off (solenoid valve is activated/deactivated) • No ABS and EBD control: Off (solenoid valve is deactivated) | Internal fault of ABS (ABS/TCS) HU/CM. Replace ABS (ABS/TCS) HU/CM. (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [MTX].) (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [ATX].) | -
ABSRF_I (Right front ABS pressure retention solenoid valve output state) | On/Off | • During ABS control: On/Off (solenoid valve is activated/deactivated) • No ABS control: Off (solenoid valve is deactivated) | Internal fault of ABS (ABS/TCS) HU/CM. Replace ABS (ABS/TCS) HU/CM. (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [MTX].) (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [ATX].) | -
ABSRF_O (Right front ABS pressure reduction solenoid valve output state) | On/Off | • During ABS control: On/Off (solenoid valve is activated/deactivated) • No ABS control: Off (solenoid valve is deactivated) | Internal fault of ABS (ABS/TCS) HU/CM. Replace ABS (ABS/TCS) HU/CM. (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [MTX].) (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [ATX].) | -
ABSRR_I (Right rear ABS pressure retention solenoid valve output state) | On/Off | • During ABS or EBD control: On/Off (solenoid valve is activated/deactivated) • No ABS and EBD control: Off (solenoid valve is deactivated) | Internal fault of ABS (ABS/TCS) HU/CM. Replace ABS (ABS/TCS) HU/CM. (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [MTX].) (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [ATX].) | -
ABSRR_O (Right rear ABS pressure reduction solenoid valve output state) | On/Off | • During ABS or EBD control: On/Off (solenoid valve is activated/deactivated) • No ABS and EBD control: Off (solenoid valve is deactivated) | Internal fault of ABS (ABS/TCS) HU/CM. Replace ABS (ABS/TCS) HU/CM. (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [MTX].) (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [ATX].) | -
ABSPMPRLY (Motor relay output state) | On/Off | • Motor relay is activated: On • Motor relay is deactivated: Off | Inspect ABS (ABS/TCS) HU/CM. (See ABS (ABS/TCS) HU/CM INSPECTION) | -
ABSVLVRLY (Fail-safe relay output state) | On/Off | • Fail-safe relay is activated: On • Fail-safe relay is deactivated: Off | Inspect ABS (ABS/TCS) HU/CM. (See ABS (ABS/TCS) HU/CM INSPECTION) | -
ABS_VOLT (System battery voltage value) | V | • Ignition key at ON: B+ • Idle: Approx. 14-16 V | Inspect power supply circuit. (See ABS (ABS/TCS) HU/CM INSPECTION) | Z
BRAKE_LMP (BRAKE system 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. | -
BOO_ABS (Brake pedal switch input) | On/Off | • Brake pedal is depressed: On • Brake pedal is released: Off | Inspect brake switch. | -
CCNTABS (Number of continuous codes) | - | • DTC is detected: 1-255 • DTC is not detected: 0 | Perform inspection using appropriate DTC. | -
LF_WSPD (Left front ABS wheel-speed sensor input) | KPH, MPH | • Vehicle is stopped: 0 KPH {0 MPH} • Vehicle is driving: Indicates vehicle speed | Inspect ABS wheel-speed sensor/sensor rotor. | I, E
LR_WSPD (Left rear ABS wheel-speed sensor input) | KPH, MPH | • Vehicle is stopped: 0 KPH {0 MPH} • Vehicle is driving: Indicates vehicle speed | Inspect ABS wheel-speed sensor/sensor rotor. | C, F
PCM_MSG (Missing message from the PCM) | Present/ Not Present | • Present: Circuit in the PCM is normal. • Not Present: Circuit in the PCM is abnormal. | Inspect PCM. (See PCM INSPECTION [L8, LF, L3].) (See PCM INSPECTION [MZR-CD (RF Turbo)].) Inspect ABS (ABS/TCS) HU/CM. (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [MTX].) (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [ATX].) | -
PMPSTAT (Pump motor output state) | On/Off | • Pump motor is activated: On • Pump motor is deactivated: Off | Inspect ABS (ABS/TCS) HU/CM. (See ABS (ABS/TCS) HU/CM SYSTEM INSPECTION.) | -
RF_WSPD (Right front ABS wheel-speed sensor input) | KPH, MPH | • Vehicle is stopped: 0 KPH {0 MPH} • Vehicle is driving: Indicates vehicle speed | Inspect ABS wheel-speed sensor/sensor rotor. | G, D
RPM (Engine speed signal input) | RPM | • Engine is stopped: 0 RPM • Engine is running: Indicates engine speed | Inspect PCM. (See PCM INSPECTION [L8, LF, L3].) (See PCM INSPECTION [MZR-CD (RF Turbo)].) | -
RR_WSPD (Right rear ABS wheel-speed sensor input) | KPH, MPH | • Vehicle is stopped: 0 KPH {0 MPH} • Vehicle is driving: Indicates vehicle speed | Inspect ABS wheel-speed sensor/sensor rotor. | A, B
TCM_MSG* (Missing message from the TCM) | Present/ Not Present | • Present: Circuit in the TCM is normal. • Not Present: Circuit in the TCM is abnormal. | Inspect TCM. (See TCM INSPECTION [FS5A-EL].) Inspect ABS (ABS/TCS) HU/CM. (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [MTX].) (See ABS (ABS/TCS) HU/CM REMOVAL/INSTALLATION [ATX].) | -

  * :
Only vehicles with ATX

## Active Command Modes Table

Command Name | Definition | Operation | Note
--- | --- | --- | ---
ABS_POWER | Fail-safe relay | On/Off | Ignition key at ON (Engine running, vehicle is not moving)
LR_OUTLET | Left rear ABS pressure reduction solenoid valve | On/Off
LR_INLET | Left rear ABS pressure retention solenoid valve | On/Off
RR_INLET | Right rear ABS pressure retention solenoid valve | On/Off
RR_OUTLET | Right rear ABS pressure reduction solenoid valve | On/Off
LF_INLET | Left front ABS pressure retention solenoid valve | On/Off
LF_OUTLET | Left front ABS pressure reduction solenoid valve | On/Off
RF_INLET | Right front ABS pressure retention solenoid valve | On/Off
RF_OUTLET | Right front ABS pressure reduction solenoid valve | On/Off
PMP_MOTOR | ABS motor | On/Off