Toyota 4Runner manuals

Toyota 4Runner: Open or Short in Master Cylinder Pressure Sensor (C1421,C1281,C1423,C1424)

DESCRIPTION


DTC Code

DTC Detection Condition

Trouble Area

C1421

Either condition is met:

Both of the following conditions continue for at least 1.2 seconds.

  • The IG1 terminal voltage is between 9.5 V and 17.0 V.
  • The VM/C1 terminal voltage is not within 4.4 V and 5.6 V.

Both of the following conditions continue for at least 1.2 seconds.

  • The VM/C1 terminal voltage is between 4.4 V and 5.6 V.
  • The PM/C1 terminal voltage is not within 0.19 V and 4.57 V.
  • Master cylinder pressure sensor circuit
  • Master cylinder solenoid (Master cylinder pressure sensor, skid control ECU)

C1423

Both of the following conditions continue for at least 5 seconds

  • The stop light switch is off.
  • The PM/C1 terminal voltage is below 0.3 V.

C1424

One of the following condition is met:

  • Noise occurs in the signal from the PM/C1 terminal 7 times or more within 5 seconds
  • When the vehicle speed drops from 40 km/h (25 mph) to 10 km/h (6 mph), the master cylinder pressure does not change by at least 0.048 MPa.
  • At a vehicle speed of 7 km/h (4 mph) or more, the PM/C1 terminal voltage is between 0.86 and 1.0 V and master cylinder pressure does not change by at least 0.048 MPa for 60 seconds or more.
  • At a vehicle speed of 7 km/h (4 mph) or more, the PM/C1 terminal voltage is 1.0 V or higher and master cylinder pressure does not change by at least 0.048 MPa for 30 seconds or more.
  • At a vehicle speed of 7 km/h (4 mph) or more with the stop light switch ON, a state in which the master cylinder pressure sensor input value is sufficiently greater than the estimated master pressure continues for 1 second of more and this state occurs 5 or more times each time the ignition switch is turned to ON, and this occurs 8 or more times consecutively.

C1281

Stored only during test mode.

CAUTION / NOTICE / HINT

NOTICE:

When replacing the master cylinder solenoid, perform calibration (See page ).


PROCEDURE

1.

REPLACE MASTER CYLINDER SOLENOID

(a) Replace the master cylinder solenoid (See page ).



NEXT

END

Acceleration Sensor Malfunction (C1420)
DESCRIPTION Refer to DTCs C1419 and C1435 (See page ). DTC Code DTC Detection Condition Trouble Area C1420 After the difference between ...

Master Cylinder Pressure Sensor Zero Point High Malfunction (C1422)
DESCRIPTION Refer to DTCs C1421, C1423 and C1424 (See page ). DTC Code DTC Detection Condition Trouble Area C1422 When the stop light s ...

Other materials about Toyota 4Runner:

Lost Communication with ECM (U0100,U0142,U0155)
DESCRIPTION The air conditioning amplifier communicates with the ECM, main body ECU (multiplex network body ECU) and combination meter through the CAN communication system. DTC Code DTC Detection Condition Trouble Area ...

Fuel information
You must only use unleaded gasoline in your vehicle. Select octane rating 87 (Research Octane Number 91) or higher. Use of unleaded gasoline with an octane rating lower than 87 may result in engine knocking. Persistent knocking can lead to engine damage. ...

© 2016-2020 | www.to4runner.net

0.0049