Tacoma

Toyota Tacoma 2015-2018 Brake Workshop Manual

OK
(a) Measure the voltage according to the value(s) in the table
below.
Standard Voltage:
TESTER
CONNECTION
CONDITION SPECIFIED
CONDITION
S1-7 (STP2) - 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
(STP2 CIRCUIT)
4. PERFORM ACTIVE TEST USING TECHSTREAM (STOP LIGHT RELAY)
(a) Reconnect the S1 skid control ECU (brake actuator assembly) connector.
(b) Connect the Techstream to the DLC3.
(c) Start the engine.
(d) Turn the Techstream on.
(e) Enter the following menus: Chassis / ABS/VSC/TRAC / Active Test.
ABS/VSC/TRAC
TESTER DISPLAY MEASUREMENT ITEM CONTROL RANGE DIAGNOSTIC NOTE
Stop Light Relay Stop Light Relay Relay ON/OFF
Stop lights come on
Vehicle condition: Vehicle stopped
(f) While performing the Active Test, check the illumination condition of the stop lights and "Stop Light
Relay Output" in the Data List.
ABS/VSC/TRAC
TESTER DISPLAY MEASUREMENT ITEM NORMAL CONDITION DIAGNOSTIC NOTE
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