ON-BOARD DIAGNOSIS [ABS]

#
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
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].)
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