C1142

C1142 PRESS SENSOR

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

If "DTC CONFIRMATION PROCEDURE" has been previously conducted, always turn power switch OFF and wait at least 10 seconds before conducting the next test.
- GO TO 2.

2. CHECK DTC DETECTION

With CONSULT
1.Turn the power switch OFF ON.

CAUTION:
- Be sure to wait of 10 seconds after turning power switch OFF or ON.
- Set the vehicle to READY.
2.Repeat step 1 two or more times.
3.Perform self-diagnosis for "ABS".
Is DTC "C1142" detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK CONNECTOR

1.Turn the power switch OFF
2.Check the ABS actuator and electric unit (control unit) harness connector for disconnection or looseness.
3.Check the master cylinder pressure sensor2 harness connector for disconnection or looseness.
Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace error-detected parts, securely lock the connector, and GO TO 2.

2. PERFORM SELF-DIAGNOSIS (1)

With CONSULT
1.Turn the power switch OFF ON.

CAUTION:
- Be sure to wait of 10 seconds after turning power switch OFF or ON.
- Set the vehicle to READY.
2.Repeat step 1 two or more times.
3.Perform self-diagnosis for "ABS".
Is DTC"C1142" detected?
YES- GO TO 3.
NO- INSPECTION END

3. CHECK MASTER CYLINDER PRESSURE SENSOR2 CIRCUIT

1.Turn the power switch OFF
2.Disconnect ABS actuator and electric unit (control unit) harness connector.
3.Disconnect master cylinder pressure sensor2 harness connector.
4.Check the continuity between master cylinder pressure sensor2 harness connector and ABS actuator and electric unit (control unit) harness connector.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace error-detected parts.

4. CHECK MASTER CYLINDER PRESSURE SENSOR2 POWER SUPPLY

1.Connect ABS actuator and electric unit (control unit) harness connector.
2.Turn the power switch ON.

CAUTION:
Never set the vehicle to READY.
3.Check the voltage master cylinder pressure sensor2 harness connector terminals.





Is the inspection result normal?
YES- GO TO 5.
NO- Replace ABS actuator and electric unit (control unit). Refer to "Removal and Installation" Removal And Installation.

5. CHECK DATA MONITOR

With CONSULT
1.Turn the power switch OFF.
2.Connect master cylinder pressure sensor2 harness connector.
3."ABS", "DATA MONITOR" and " PRESSURE SENSOR" according to this order.
4.Check that the indication changes with the depth of pedal depression. Refer to "Reference Value" Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES- GO TO 6.
NO- GO TO 7.

6. PERFORM SELF-DIAGNOSIS (2)

With CONSULT
1.Turn the power switch OFF ON.

CAUTION:
- Be sure to wait of 10 seconds after turning power switch OFF or ON.
- Set the vehicle to READY.
2.Repeat step 1 two or more times.
3.Perform self-diagnosis for "ABS".
Is DTC"C1142" detected?
YES- Replace ABS actuator and electric unit (control unit). Refer to "Removal and Installation" Removal And Installation.
NO- INSPECTION END

7. CHECK MASTER CYLINDER PRESSURE SENSOR2

1.Turn the power switch OFF.
2.Connect following terminals between master cylinder pressure sensor2 and harness connector (test harness).





3.Turn the power switch ON.

CAUTION:
Never set the vehicle to READY.
4.Check that the voltage between master cylinder pressure sensor2 harness connectors changes with the depth of pedal depression.

CAUTION:
Never short out the terminals while measuring voltages.





Is the inspection result normal?
YES- Replace ABS actuator end electric unit (control unit). Refer to "Removal and Installation" Removal And Installation.
NO- Replace master cylinder pressure sensor2. Refer to "Removal and installation" Removal And Installation.