Lighting System Taillight Relay Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT FUSE (TAIL)

INSPECT INSTRUMENT PANEL JUNCTION BLOCK

CHECK HARNESS AND CONNECTOR (BATTERY - DAYTIME RUNNING LIGHT CONTROL RELAY)

INSPECT DAYTIME RUNNING LIGHT RELAY

DESCRIPTION

1. The daytime running light relay receives the light control switch TAIL signal to control the taillight relay.
   

HINT:

1. If only one taillight does not illuminate, check the bulb or wire harness related to the bulb.
   
2. The taillight relay is installed in the instrument panel junction block, so unlike conventional relays, it can not be removed for inspection.
   

WIRING DIAGRAM

INSPECTION PROCEDURE

1. Remove the TAIL fuse from the instrument panel junction block.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   TAIL fuse	Always	Below 1 Ω

1. Measure the voltage between the loading slot of the TAIL fuse and body ground.
   

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   TAIL fuse terminal - Body ground	Light control switch OFF → TAIL	Below 1 V → 11 to 14 V

1. Disconnect the E91 daytime running light relay connector.
   

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

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   E91-14 (TAIL) - Body ground	Always	11 to 14 V

1. Reconnect the E91 daytime running light relay connector.
   

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

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   E91-14 (TAIL) - Body ground	Light control switch OFF → TAIL	11 to 14 V → Below 1 V