Toyota Tundra (2015 year). Manual — part 2213

Last Modified: 9-16-2014

6.6 U

Doc ID: RM000002ZCD04AX

Model Year: 2015

Model: Tundra

Prod Date Range: [08/2014 - ]

Title: WINDSHIELD / WINDOWGLASS: WINDOW DEFOGGER SYSTEM: DATA LIST / ACTIVE TEST; 2015 MY

Tundra [08/2014 - ]

DATA LIST / ACTIVE TEST

1. ACTIVE TEST

HINT:

Using the Techstream to perform the Active Tests allows relays, VSVs and actuators and other items to be

operated without removing any parts. This non-intrusive functional inspection can be very useful because
intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early
in troubleshooting is one way to save diagnostic time. Data List information can be displayed while
performing Active Tests.

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Air Conditioner / Active Test.

(e) According to the display on the Techstream, perform the "Active Test".

Air Conditioner

TESTER DISPLAY

TEST PART

CONTROL RANGE

DIAGNOSTIC NOTE

Defogger Relay (Rear)

Defogger relay

ON or OFF

-

WINDSHIELD / WINDOWGLASS: WINDOW DEFOGGER SYSTEM...

Last Modified: 9-16-2014

6.6 J

Doc ID: RM000002LI804YX

Model Year: 2015

Model: Tundra

Prod Date Range: [08/2014 - ]

Title: WINDSHIELD / WINDOWGLASS: WINDOW DEFOGGER SYSTEM: Rear Window Defogger System does not

Operate; 2015 MY Tundra [08/2014 - ]

Rear Window Defogger System does not Operate

DESCRIPTION

When the air conditioning control assembly (rear window defogger switch) is turned on, a rear window defogger

activation request signal is sent via the LIN communication line to the air conditioning amplifier. Then the air

conditioning amplifier operates the rear window defogger.

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:

This circuit uses the LIN communication line. Before performing the inspection, check that the LIN

communication system is functioning normally

.

PROCEDURE

1.

PERFORM ACTIVE TEST USING TECHSTREAM (DEFOGGER RELAY)

WINDSHIELD / WINDOWGLASS: WINDOW DEFOGGER SYSTEM...

OK

(a) Select the Active Test, using the Techstream to generate a control command, and then check that

the rear window defogger operates

.

Air Conditioner

TESTER DISPLAY

TEST PART

CONTROL RANGE

DIAGNOSTIC NOTE

Defogger Relay (Rear)

Defogger relay

ON or OFF

-

OK:

Rear window defogger operates normally.

NG

GO TO STEP 3

2.

CHECK AIR CONDITIONING CONTROL ASSEMBLY

(a) Temporarily replace the air conditioning control assembly with a new or normally functioning one

.

(b) Check that the malfunction disappears.

OK:

Malfunction disappears.

NG

REPLACE AIR CONDITIONING AMPLIFIER

OK

END (AIR CONDITIONING CONTROL ASSEMBLY IS

DEFECTIVE)

3.

INSPECT FUSE (DEFOG, ECU-IG No.1)

(a) Remove the DEFOG H-fuse from the engine room relay block, junction block.

(b) Remove the ECU-IG No.1 fuse from the driver side junction block assembly.

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

Standard resistance:

TESTER CONNECTION

CONDITION

SPECIFIED CONDITION

DEFOG H-fuse

Always

Below 1 Ω

ECU-IG No.1 fuse

Always

Below 1 Ω

NG

REPLACE FUSE

WINDSHIELD / WINDOWGLASS: WINDOW DEFOGGER SYSTEM...

OK

OK

4.

INSPECT DEFOGGER RELAY (DEFOG)

(a) Remove the defogger relay (DEFOG) from the engine room

relay block, junction block.

(b) Measure the resistance according to the value(s) in the table

below.

Standard resistance:

TESTER

CONNECTION

CONDITION

SPECIFIED

CONDITION

3 - 4

When battery voltage is not

applied between terminals 1 and

2

Below 1 Ω

3 - 5

10 kΩ or higher

3 - 4

When battery voltage is applied

to terminals 1 and 2

10 kΩ or higher

3 - 5

Below 1 Ω

NG

REPLACE DEFOGGER RELAY

5.

CHECK HARNESS AND CONNECTOR (DEFOGGER RELAY - BATTERY AND AIR
CONDITIONING AMPLIFIER)

WINDSHIELD / WINDOWGLASS: WINDOW DEFOGGER SYSTEM...