Toyota Tundra (2015 year). Manual — part 2095
OK
BULB)
(a) Remove the headlight dimmer relay from the engine room relay block.
(b) for LH:
(1) Disconnect the A8 headlight connector.
(2) Measure the resistance according to the value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
Headlight dimmer relay terminal 5 - A8-2 (HI)
Always
Below 1 Ω
Headlight dimmer relay terminal 5 - Body ground
Always
10 kΩ or higher
(c) for RH:
(1) Disconnect the A9 headlight connector.
(2) Measure the resistance according to the value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
Headlight dimmer relay terminal 5 - A9-2 (HI)
Always
Below 1 Ω
Headlight dimmer relay terminal 5 - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
LIGHTING: LIGHTING SYSTEM: Headlight (HI-BEAM) Circuit; 20...
7.
CHECK HEADLIGHT (HIGH BEAM)
(a) Disconnect the DB ECU connector.
(b) Using a service wire, connect DB-16 (DIM) on the wire
harness side and body ground.
(c) Check that the headlight high beam illuminates.
OK:
Headlight high beam illuminates.
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
(HEADLIGHT DIMMER RELAY - MAIN BODY ECU)
OK
REPLACE MAIN BODY ECU
LIGHTING: LIGHTING SYSTEM: Headlight (HI-BEAM) Circuit; 20...
Last Modified: 9-16-2014
6.6 J
Doc ID: RM000002WKU01FX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: LIGHTING: LIGHTING SYSTEM: Front Fog Light Circuit; 2015 MY Tundra [08/2014 - ]
Front Fog Light Circuit
DESCRIPTION
The main body ECU receives a front fog light switch information signal from the light control switch (front fog
switch), and illuminates the front fog lights.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Inspect the bulbs for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1.
PERFORM ACTIVE TEST USING TECHSTREAM (FRONT FOG LIGHT)
(a) Operate the Techstream according to the steps on the display and select "Active Test".
Main Body
LIGHTING: LIGHTING SYSTEM: Front Fog Light Circuit; 2015 MY ...
OK
TESTER DISPLAY
TEST PART
CONTROL RANGE
DIAGNOSTIC NOTE
Front Fog Light Relay
Front fog light
ON or OFF
-
OK:
Front fog light turns on / turns off.
NG
GO TO STEP 2
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN
IN PROBLEM SYMPTOMS TABLE
2.
INSPECT FUSE (FOG)
(a) Remove the FOG fuse from the engine room junction block.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
FOG fuse
Always
Below 1 Ω
NG
REPLACE FUSE
3.
CHECK HARNESS AND CONNECTOR (FRONT FOG LIGHT BULB - BATTERY)
(a) for LH:
(1) Disconnect the A30 front fog light connector.
(2) Measure the voltage according to the value(s) in the table below.
Standard voltage:
LIGHTING: LIGHTING SYSTEM: Front Fog Light Circuit; 2015 MY ...
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