Tacoma

Toyota Tacoma 2015-2018 Brake Workshop Manual

Last Modified: 11-13-2015 6.6 C Doc ID: RM000005VB5000X
Model Year Start: 2016 Model: Tacoma Prod Date Range: [08/2015 - ]
Title: BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (for Vacuum Brake Booster):
C1421,C1423,C1424,C142A,C1449; Open or Short in Master Cylinder Pressure Sensor; 2016 MY Tacoma
[08/2015 - ]
DTC C1421 Open or Short in Master Cylinder Pressure Sensor
DTC C1423 Master Cylinder Pressure Sensor Zero Point Low Malfunction
DTC C1424 Master Cylinder Pressure Sensor Output Malfunction
DTC C142A Master Cylinder Pressure Sensor Internal Malfunction
DTC C1449 Master Cylinder Output Value Malfunction
DESCRIPTION
DTC
N
O.
DETECTION ITEM DTC DETECTION CONDITION TROUBLE AREA
C1421
Open or Short in
Master Cylinder
Pressure Sensor
Any of the following is detected:
When voltage at terminal +BS is 9.5 V or higher, power
supply voltage of master cylinder pressure sensor is
continuously low for 1 second or more.
When master cylinder pressure sensor power supply
voltage has risen, master cylinder pressure sensor has
overheated or overcurrent of master cylinder pressure
sensor continues for 0.1 seconds or more.
When +BS terminal voltage is 9.5 to 17.4 V, there is no
communication with master cylinder pressure sensor
continuously for 0.1 seconds or more.
Brake actuator
assembly
(Master
cylinder
pressure
sensor)
C1423
Master Cylinder
Pressure Sensor
Zero Point Low
Malfunction
Master cylinder pressure is below -0.744 MPa (-7.6 kgf/cm
2
, -107
psi) for 5 seconds or more.
Brake actuator
assembly
(Master
cylinder
pressure
sensor)
C1424
Master Cylinder
Pressure Sensor
Output
Malfunction
Any of the following is detected:
When vehicle speed is 7 km/h (4.3 mph) or more and
master cylinder pressure exceeds 1.764 MPa (18.0
Brake actuator
assembly
(Master
cylinder
cardiagn.com

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