Tacoma

Toyota Tacoma 2015-2018 Brake Workshop Manual

DTC
CODE
DTC DETECTION CONDITION TROUBLE AREA
C1281 Stored only during test mode.
Master cylinder
pressure sensor
circuit
Skid control ECU,
master cylinder
pressure sensor
(master cylinder
solenoid)
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.
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 conditions 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 or 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.
INSPECTION PROCEDURE
NOTICE:
When replacing the skid control ECU (master cylinder solenoid), perform calibration .
PROCEDURE
1. REPLACE MASTER CYLINDER SOLENOID
(a) Replace the master cylinder solenoid .
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