Taillight Relay Circuit

LIGHTING (EXT): LIGHTING SYSTEM: Taillight Relay Circuit

Taillight Relay Circuit

DESCRIPTION

The main body ECU (driver side junction block assembly) controls the operation of the TAIL relay.

WIRING DIAGRAM





INSPECTION PROCEDURE
NOTICE: Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Active Test.
(e) Check that the relay operates.

Main Body





OK:
Taillight relay operates. (Taillights illuminate.)

NG -- INSPECT TAILLIGHT RELAY (TAIL)
OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT TAILLIGHT RELAY (TAIL)




(a) Remove the taillight relay from the main body ECU (driver side junction block assembly).
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPLACE TAILLIGHT RELAY
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)




(a) Disconnect the 2A main body ECU (driver side junction block assembly) connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)