Tacoma

Toyota Tacoma 2015-2018 Brake Workshop Manual

(f) Check if the same DTC is recorded .
Result
RESULT PROCEED TO
DTC C1426 is not output. A
DTC C1426 is output. B
B
INSPECT LIGHTING SYSTEM (STOP LIGHT CIRCUIT)
A
USE SIMULATION METHOD TO CHECK
8. CHECK HARNESS AND CONNECTOR (STP 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 connector.
(c) Disconnect the S1 skid control ECU (brake actuator assembly) connector.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
TESTER CONNECTION SWITCH CONDITION SPECIFIED CONDITION
S1-35 (STP) - Body ground
Stop light switch assembly on (Brake pedal depressed) 8 to 14 V
Stop light switch assembly off (Brake pedal released) Below 1.5 V
Text in Illustration
*a
Front view of wire harness connector
(to Skid Control ECU (Brake Actuator Assembly))
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
(STP CIRCUIT)
OK
REPLACE BRAKE ACTUATOR ASSEMBLY
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