Daytime Running Light Relay Circuit

LIGHTING: LIGHTING SYSTEM: Daytime Running Light Relay Circuit
- Daytime Running Light Relay Circuit

DESCRIPTION

The front controller controls the daytime running light system.

for HID Type:

The system illuminates the high-intensity LED parking lights (high-intensity circuit).

except HID Type:

The system illuminates the headlights (dimmed high beams). Refer to High Beam Headlight Circuit because the daytime running light system uses the same circuit Headlight (Hi-Beam) Circuit.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Body No.5 / Active Test.

(e) Check that the daytime running lights operate.

Body No. 5 (Front Controller)





OK:

Daytime running lights illuminate. (LED parking lights illuminate on high-intensity (bright) setting.)

NG -- CHECK HARNESS AND CONNECTOR (ENGINE ROOM NO. 2 R/B - HEADLIGHTS)

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

2. CHECK HARNESS AND CONNECTOR (ENGINE ROOM NO. 2 R/B - HEADLIGHTS)

(a) Disconnect the 2G relay block connector.

(b) Disconnect the B2 and B12 headlight assembly connectors.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. REPLACE ENGINE ROOM NO. 2 R/B (FRONT CONTROLLER)

(a) Replace the engine room No.2 R/B (front controller).

(b) Check the operation of the daytime running light system.

Result:





B -- REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)

A -- END