Lighting System Daytime Running Light Relay Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (DAYTIME RUNNING LIGHT)

INSPECT DAYTIME RUNNING LIGHT RELAY (DRL)

CHECK HARNESS AND CONNECTOR (DAYTIME RUNNING LIGHT RELAY [DRL] - BATTERY)

CHECK HARNESS AND CONNECTOR (DAYTIME RUNNING LIGHT RELAY [DRL] - DRIVER SIDE JUNCTION BLOCK ASSEMBLY)

INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

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

1. Using the intelligent tester, perform the Active Test (LandCruiser RM000000PKV0J6X.html).
   
   

   Main Body

   Tester Display	Test Part	Control Range	Diagnostic Note
   Daytime Running Light	Daytime running light relay	ON/OFF	-

   OK:

   Daytime running Lights (for LED Headlight) or LO beam headlights (for Halogen Headlight) illuminate.
   

1. Remove the daytime running light relay from the engine room No. 5 relay block.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   3 - 5	Battery voltage not applied between terminals 1 and 2	10 kΩ or higher
   3 - 5	Battery voltage applied between terminals 1 and 2	Below 1 Ω

1. Remove the daytime running light relay from the engine room No. 5 relay block.
   

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

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   Daytime running light relay terminal 5 - Body ground	Always	11 to 14 V
   Daytime running light relay terminal 2 - Body ground

   Text in Illustration

   *a	Front view of wire harness connector (to Daytime Running Light Relay [DRL])

1. Remove the daytime running light relay from the engine room No. 5 relay block.
   

2. Disconnect the 2F driver side junction block assembly connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   Daytime running light relay terminal 1 - 2F-24	Always	Below 1 Ω
   2F-24 - Body ground	Always	10 kΩ or higher

1. Remove the driver side junction block assembly (LandCruiser RM000003WBO05FX.html).
   

2. Remove the main body ECU from the driver side junction block assembly (LandCruiser RM000003WBO05FX.html).
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   A-22 (DRL) - 2F-24	Always	Below 1 Ω