Toyota 4Runner Quiz
Audio / Visual / Telematics

Taillight Relay Circuit

In this manual: Audio / Visual / Telematics
General — 25Audio / Visual / Telematics — 283Brake — 187Drivetrain — 204Power Source / Network — 79Steering — 76Suspension — 130Vehicle Exterior — 391Vehicle Interior — 693
~1min read
DESCRIPTION

This is the power source circuit of the clearance warning ECU assembly.

WIRING DIAGRAM
CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

  1. CHECK TAILLIGHT

(a) Turn the light control switch to the TAIL position.

(b) Check that the taillight turns on.

OK:

Taillight turns on.


NG

GO TO LIGHTING SYSTEM
OK

  1. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - BATTERY)

(a) Disconnect the F95 clearance warning ECU assembly connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

F95-24 (TL) - Body ground

Ignition switch ON, light control switch TAIL

11 to 14 V

Ignition switch ON, light control switch not TAIL

Below 1 V
Text in Illustration

*a

Front view of wire harness connector

(to Clearance Warning ECU Assembly)

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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