Tacoma

Toyota Tacoma 2015-2018 Brake Workshop Manual

Last Modified: 11-13-2015 6.6 C Doc ID: RM000005VAW000X
Model Year Start: 2016 Model: Tacoma Prod Date Range: [08/2015 - ]
Title: BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (for Vacuum Brake Booster): C1428; Motor
Circuit Malfunction; 2016 MY Tacoma [08/2015 - ]
DTC C1428 Motor Circuit Malfunction
DESCRIPTION
DTC
NO.
DETECTION ITEM DTC DETECTION CONDITION TROUBLE AREA
C1428
Motor Circuit
Malfunction
With the motor relay and motor fail-safe relay OFF, open or
short in motor circuit continues for 2 seconds or more.
Brake actuator
assembly (Motor
circuit)
WIRING DIAGRAM
Refer to DTCs C142B, C146C and C146D .
INSPECTION PROCEDURE
NOTICE:
When replacing the skid control ECU (brake actuator assembly), perform zero point calibration and store
system information .
PROCEDURE
1. CHECK HARNESS AND CONNECTOR (GND2 TERMINAL)
(a) Turn the ignition switch off.
(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
(c) Disconnect the S1 skid control ECU (brake actuator assembly) connector.
(d) Measure the resistance according to the value(s) in the table
below.
Standard Resistance:
TESTER CONNECTION CONDITION SPECIFIED CONDITION
S1-1 (GND2) - Body ground Always Below 1 Ω
Text in Illustration
*a
Front view of wire harness connector
(to Skid Control ECU [Brake Actuator Assembly])
cardiagn.com

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