Test Mode DTC

DTC No.

Detection Item

Trouble Areas

See page

C1271/71

Low Output Signal of Front Speed Sensor RH (Test Mode DTC)

1. Front speed sensor RH

2. Front speed sensor RH circuit

3. Sensor installation

4. Foreign matter on sensor tip or sensor rotor

BC-37

C1272/72

Low Output Signal of Front Speed Sensor LH (Test Mode DTC)

1. Front speed sensor LH

2. Front speed sensor LH circuit

3. Sensor installation

4. Foreign matter on sensor tip or sensor rotor

BC-37

C1273/73

Low Output Signal of Rear Speed Sensor RH (Test Mode DTC)

1. Skid control sensor RH

2. Skid control sensor RH circuit

3. Sensor installation

BC-44

C1274/74

Low Output Signal of Rear Speed Sensor LH (Test Mode DTC)

1. Skid control sensor LH

2. Skid control sensor LH circuit

3. Sensor installation

BC-44

DTC No.

Detection Item

Trouble Areas

See page

C1275/75

Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC)

1. Front speed sensor RH

2. Front speed sensor RH circuit

3. Foreign matter on sensor tip or sensor rotor

BC-37

C1276/76

Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC)

1. Front speed sensor LH

2. Front speed sensor LH circuit

3. Foreign matter on sensor tip or sensor rotor

BC-37

C1277/77

Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC)

1. Skid control sensor RH

2. Skid control sensor RH circuit

BC-44

C1278/78

Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)

1. Skid control sensor LH

2. Skid control sensor LH circuit

BC-44

Sea Life Cut And Glue

ON-VEHICLE INSPECTION

1. CONNECT INTELLIGENT TESTER

(a) Connect the intelligent tester to the DLC3.

(b) Start the engine and allow it to idle.

(d) Perform the active test using the intelligent tester. Select the following menu items: DIAGNOSIS / OBD/MOBD / select vehicle / ABS / ACTIVE TEST.

2. INSPECT BRAKE ACTUATOR MOTOR

(a) With the motor relay ON, check the actuator motor operation sound. Turn the motor relay OFF. Depress the brake pedal and hold it for approximately 15 seconds. Check that the brake pedal cannot be depressed further. With the motor relay ON, check that the pedal does not pulsate. NOTICE:

Do not keep the motor relay ON for more than 5 seconds continuously. Allow intervals of at least 20 seconds between consecutive operations.

(e) Turn the motor relay OFF and release the brake pedal.

3. INSPECT BRAKE ACTUATOR SOLENOID (for Front Right Wheel)

NOTICE:

Never turn ON a solenoid in any manner other than described below.

(a) With the brake pedal depressed, perform the following operations.

(b) Turn the SFRH and SFRR solenoids ON simultaneously, and check that the pedal cannot be depressed further.

NOTICE:

Do not keep the motor relay ON for more than 5 seconds continuously. Allow intervals of at least 20 seconds between consecutive operations.

(c) Turn the SFRH and SFRR solenoids OFF simultaneously, and check that the pedal can be depressed further.

(d) Turn the motor relay ON, and check that the pedal can be depressed.

NOTICE:

Do not keep the motor relay ON for more than 5 seconds continuously. Allow intervals of at least 20 seconds between consecutive operations.

(e) Turn the motor relay OFF and release the brake pedal.

INSPECT BRAKE ACTUATOR SOLENOID (for Front

Left Wheel)

NOTICE:

Never turn ON a solenoid in any manner other than described below.

(a) With the brake pedal depressed, perform the following operations.

(b) Turn the SFLH and SFLR solenoids ON simultaneously, and check that the pedal cannot be depressed further.

NOTICE:

Do not keep the motor relay ON for more than 5 seconds continuously. Allow intervals of at least 20 seconds between consecutive operations.

(c) Turn the SFLH and SFLR solenoids OFF simultaneously, and check that the pedal can be depressed further.

(d) Turn the motor relay ON, and check that the pedal can be depressed.

NOTICE:

Do not keep the motor relay ON for more than 5 seconds continuously. Allow intervals of at least 20 seconds between consecutive operations.

(e) Turn the motor relay OFF and release the brake pedal.

INSPECT BRAKE ACTUATOR SOLENOID (for Rear

Right Wheel)

NOTICE:

Never turn ON a solenoid in any manner other than described below.

(a) With the brake pedal depressed, perform the following operations.

(b) Turn the SRRH and SRRR solenoids ON simultaneously, and check that the pedal cannot be depressed further.

NOTICE:

Do not keep the motor relay ON for more than 5 seconds continuously. Allow intervals of at least 20 seconds between consecutive operations.

(c) Turn the SRRH and SRRR solenoids OFF simultaneously, and check that the pedal can be depressed further.

(d) Turn the motor relay ON, and check that the pedal can be depressed.

NOTICE:

Do not keep the motor relay ON for more than 5 seconds continuously. Allow intervals of at least 20 seconds between consecutive operations.

(e) Turn the motor relay OFF and release the brake pedal.

6. INSPECT BRAKE ACTUATOR SOLENOID (for Rear Left Wheel) NOTICE:

Never turn ON a solenoid in any manner other than described below.

(a) With the brake pedal depressed, perform the following operations.

(b) Turn the SRLH and SRLR solenoids ON simultaneously, and check that the pedal cannot be depressed further.

NOTICE:

Do not keep the motor relay ON for more than 5 seconds continuously. Allow intervals of at least 20 seconds between consecutive operations.

(c) Turn the SRLH and SRLR solenoids OFF simultaneously, and check that the pedal can be depressed further.

(d) Turn the motor relay ON, and check that the pedal can be depressed.

NOTICE:

Do not keep the motor relay ON for more than 5 seconds continuously. Allow intervals of at least 20 seconds between consecutive operations.

(e) Turn the motor relay OFF and release the brake pedal.

DTC

C0200/31

Right Front Wheel Speed Sensor Signal

DTC

C0205/32

Left Front Wheel Speed Sensor Signal

DTC

C1235/35

Foreign Object is Attached on Tip of Front Speed Sensor RH

DTC

C1236/36

Foreign Object is Attached on Tip of Front Speed Sensor LH

DTC

C1271/71

Low Output Signal of Front Speed Sensor RH (Test Mode DTC)

DTC

C1272/72

Low Output Signal of Front Speed Sensor LH (Test Mode DTC)

DTC

C1275/75

Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC)

DTC

C1276/76

Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC)

DESCRIPTION

The speed sensors detect the wheel speeds and send appropriate signals to the skid control ECU. Speed sensor rotors have rows of alternating N and S magnetic poles, and their magnetic fields change as the rotors turn.

The speed sensors detect those magnetic changes and send pulse signals to the skid control ECU. The ECU monitors the wheel speeds through these pulse signals to control the ABS control system.

Low Speed High Speed

C115116E03

DTC No.

DTC Detecting Conditions

Trouble Areas

C0200/31 C0205/32

When any of following conditions detected:

1. At vehicle speed of 6 mph (10 km/h) or more, open or short in sensor signal circuit continues for 1 second or more.

2. Momentary interruption of sensor signal from abnormal wheel occurs 255 times or more.

3. Open in speed sensor signal circuit continues for 0.5 seconds or more.

4. With IG1 terminal voltage 9.5 V or more, sensor power supply voltage decreases for 0.5 seconds or more.

5. When vehicle driven at speed of more than 6 mph (10 km/h), speed of one wheel below one-seventh of other wheel speeds for 15 seconds or more.

• Front speed sensor

• Front speed sensor circuit

• Sensor installation

• Foreign matter on sensor tip or sensor rotor

• Brake actuator (skid control ECU)

C1235/35 C1236/36

When either of following conditions detected:

1. At vehicle speed of 12 mph (20 km/h) or more, noise occurs 75 times or more in sensor signal from abnormal wheel within 5 seconds.

2. At vehicle speed of 6 mph (10 km/h) or more, noise input once per rotor rotation for 15 seconds or more.

• Front speed sensor

• Front speed sensor circuit

• Foreign matter on sensor tip or sensor rotor

• Brake actuator (skid control ECU)

C1271/71 C1272/72

Detected only during test mode.

• Front speed sensor

• Front speed sensor circuit

• Sensor installation

• Foreign matter on sensor tip or sensor rotor

C1275/75 C1276/76

Detected only during test mode.

• Front speed sensor

• Front speed sensor circuit

• Foreign matter on sensor tip or sensor rotor

HINT:

DTCs C0200/31 and C1235/35 relate to the front speed sensor RH.

• DTCs C0205/32 and C1236/36 relate to the front speed sensor LH.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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