LIGHTING SYSTEM Daytime Running Light Relay Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) controls the daytime running lights.

WIRING DIAGRAM

*a	from Battery
*b	EU-DRL
*c	to Daytime Running Lights
*d	Main Body ECU (Multiplex Network Body ECU)

CAUTION / NOTICE / HINT

PROCEDURE

1. INSPECT DRL Relay

   
   

   1. Remove the DRL relay from the No. 2 engine room relay block.

   2. Inspect the DRL relay Click here.

   
   

   NG

   REPLACE DRL RELAY

   OK

2. CHECK HARNESS AND CONNECTOR (DRL RELAY - BATTERY)

   

   Text in Illustration

   *1	No. 2 Engine Room Relay Block
   *a	DRL Relay Terminal

   
   

   1. Remove the DRL relay from the No. 2 engine room relay block.

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

      Standard Voltage
      Tester Connection Condition Specified Condition Relay terminal 1 - Body ground Always 11 to 14 V Relay terminal 5 - Body ground Always 11 to 14 V

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

3. CHECK HARNESS AND CONNECTOR (DRL RELAY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

   
   

   1. Remove the DRL relay from the No. 2 engine room relay block.

   2. Disconnect the F76 Main Body ECU (multiplex network body ECU) connector.

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

      

      Text in Illustration

      *1	No. 2 Engine Room Relay Block	-	-
      *a	H-LP/US-DRL Relay Terminal	*b	Front view of wire harness connector (to Main Body ECU (Multiplex Network Body ECU))

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition Relay terminal 2 - F76-15 (DRLE) Always Below 1 Ω

      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition Relay terminal 2 - Body ground Always 10 kΩ or higher

   
   

   OK

   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR