Toyota Tundra. Manual — part 759

FUSE (DEICER)

NG: REPLACE FUSE

OK: Go to Next Step

4. INSPECT DEICER RELAY

a. Remove the deicer relay from the engine room relay block.

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

Standard resistance

DEICER RELAY TESTER CONNECTION SPECIFIED CONDITION

Fig. 185: Inspecting Deicer Relay
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPLACE DEICER RELAY

OK: Go to Next Step

5. CHECK HARNESS AND CONNECTOR (DEICER RELAY - AIR CONDITIONING

AMPLIFIER AND BATTERY)

a. Remove the deicer relay from the engine room relay block.

b. Disconnect the J19 air conditioning amplifier connector.

Tester Connection Condition Specified Condition

DEICER fuse

Always

Below 1 ohms

Tester

Connection

Condition

Specified

Condition

3-5

When battery voltage is not applied between terminals 1
and 2

10 kohms or higher

When battery voltage is applied to terminals 1 and 2

Below 1 ohms

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Windshield/WindowGlass - Tundra

Fig. 186: Disconnecting J19 Air Conditioning Amplifier Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

Standard voltage

HARNESS AND CONNECTOR (DEICER RELAY - AIR CONDITIONING AMPLIFIER
AND BATTERY) TESTER CONNECTION SPECIFIED CONDITION

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

Standard resistance

HARNESS AND CONNECTOR (DEICER RELAY - AIR CONDITIONING AMPLIFIER
AND BATTERY) TESTER CONNECTION SPECIFIED CONDITION

Tester Connection

Condition

Specified Condition

Deicer relay terminal 1 - Body ground Ignition switch ON

11 to 14 V

Deicer relay terminal 5 - Body ground

Always

11 to 14 V

Tester Connection

Condition Specified Condition

Deicer relay terminal 2 - J19-40 (D)

Always

Below 1 ohms

Deicer relay terminal 2 - Body ground Always

10 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Windshield/WindowGlass - Tundra

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

6. CHECK HARNESS AND CONNECTOR (DEICER RELAY - WINDSHIELD DEICER WIRE)

a. Remove the deicer relay from the engine room relay block.

b. Disconnect the A23 windshield deicer wire connector.

Fig. 187: Identifying A23 Windshield Deicer Wire Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

Standard resistance

HARNESS AND CONNECTOR (DEICER RELAY - WINDSHIELD DEICER WIRE)
TESTER CONNECTION SPECIFIED CONDITION

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Tester Connection

Condition Specified Condition

A23-1 (B) - Deicer relay terminal 3

Always

Below 1 ohms

Deicer relay terminal 3 -Body ground Always

10 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Windshield/WindowGlass - Tundra

OK: Go to Next Step

7. CHECK HARNESS AND CONNECTOR (WINDSHIELD DEICER WIRE - BODY GROUND)

a. Disconnect the A23 windshield deicer wire connector.

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

Standard resistance

HARNESS AND CONNECTOR (WINDSHIELD DEICER WIRE - BODY GROUND)
TESTER CONNECTION SPECIFIED CONDITION

Fig. 188: Identifying A23 Windshield Deicer Wire Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

8. CHECK WINDSHIELD DEICER WIRE

a. Disconnect the A23 windshield deicer wire connector.

Fig. 189: Identifying A23 Windshield Deicer Wire Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Tester Connection

Condition Specified Condition

A23-2 (E) - Body ground Always

Below 1 ohms

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Windshield/WindowGlass - Tundra