Lighting System Taillight Relay Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING INTELLIGENT TESTER

INSPECT FUSE (TAIL)

INSPECT TAILLIGHT RELAY

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

CHECK HARNESS AND CONNECTOR (BATTERY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

1. Connect the intelligent tester to the DLC3.
   

2. Turn the ignition switch to the ON position and turn the intelligent tester main switch on.
   

3. Select the item below in the ACTIVE TEST and then check that the relay operates.
   
   

   Main Body (Main Body ECU):

   Item	Test Details	Diagnostic Note
   TAIL LIGHT	Taillight relay ON / OFF	-

   OK:

   Taillight relay operates. (Taillights illuminate.)
   

1. Remove the TAIL fuse from the instrument panel J/B assembly.
   

2. Measure the resistance of the fuse.
   

   Standard resistance:

   Below 1 Ω
   

1. Remove the taillight relay from the instrument panel J/B assembly.
   

2. Measure the resistance according to the value(s) in the table below.
   

   Standard resistance:

   Tester Connection	Specified Condition
   3 - 5	10 kΩ or higher
   	Below 1 Ω (When battery voltage is applied to terminals 1 and 2)
   3 - 4	Below 1 Ω
   	10 kΩ or higher (When battery voltage is applied to terminals 1 and 2)

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

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   IC-4 - Body ground	Ignition switch ON, light control switch OFF → TAIL	Below 1 V → 10 to 14 V
   IC-5 - Body ground	Ignition switch ON, light control switch OFF → TAIL	Below 1 V → 10 to 14 V
   IP-8 - Body ground	Ignition switch ON, light control switch OFF → TAIL	Below 1 V → 10 to 14 V

1. Disconnect the IA instrument panel J/B assembly connector.
   

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

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   IA-1 - Body ground	Always	10 to 14 V