Toyota Tundra (2015 year). Manual — part 2218
Last Modified: 9-16-2014
6.6 U
Doc ID: RM000002ZCD049X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: WINDSHIELD / WINDOWGLASS: WINDSHIELD DEICER 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 / 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
Deicer Relay (Front)
Windshield deicer relay assembly
ON or OFF
-
WINDSHIELD / WINDOWGLASS: WINDSHIELD DEICER SYSTE...
Last Modified: 9-16-2014
6.6 J
Doc ID: RM000002ZCE00KX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: WINDSHIELD / WINDOWGLASS: WINDSHIELD DEICER SYSTEM: Windshield Deicer does not Operate;
2015 MY Tundra [08/2014 - ]
Windshield Deicer does not Operate
DESCRIPTION
When the air conditioning control assembly (windshield deicer switch) turns is turned on, a windshield deicer
activation request signal is sent via the LIN communication line to the air conditioning amplifier. Then the air
conditioning amplifier operates the windshield deicer.
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 (WINDSHIELD DEICER RELAY
ASSEMBLY)
WINDSHIELD / WINDOWGLASS: WINDSHIELD DEICER SYSTE...
OK
(a) Select the Active Test using the Techstream to generate a control command, and then check that the
windshield deicer operates
.
Air Conditioner
TESTER DISPLAY
TEST PART
CONTROL RANGE
DIAGNOSTIC NOTE
Deicer Relay (Front)
Windshield deicer relay assembly
ON or OFF
-
OK:
Windshield deicer relay assembly turns ON and OFF.
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 (DEICER, LH-IG)
(a) Remove the DEICER fuse from the engine room relay block, junction block.
(b) Remove the LH-IG 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
DEICER fuse
Always
Below 1 Ω
LH-IG fuse
Always
Below 1 Ω
NG
REPLACE FUSE
WINDSHIELD / WINDOWGLASS: WINDSHIELD DEICER SYSTE...
OK
OK
4.
INSPECT WINDSHIELD DEICER RELAY ASSEMBLY (DEICER)
(a) Remove the windshield deicer relay assembly (DEICER) 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 - 5
When battery voltage is not
applied between terminals 1 and
2
10 kΩ or higher
When battery voltage is applied
to terminals 1 and 2
Below 1 Ω
NG
REPLACE WINDSHIELD DEICER RELAY ASSEMBLY
5.
CHECK HARNESS AND CONNECTOR (DEICER RELAY - AIR CONDITIONING AMPLIFIER
AND BATTERY)
WINDSHIELD / WINDOWGLASS: WINDSHIELD DEICER SYSTE...
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