Last Modified: 11-29-2007 1.6 D
Service Category: Vehicle Exterior Section: Window/Glass
Model Year: 2008 Model: Sequoia Doc ID: RM000002ZC700EX
Title: WINDOW / GLASS: WINDOW DEFOGGER SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING (2008 Sequoia)

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:

  • Use these procedures to troubleshoot the window defogger system.
  • *: Use the Techstream.

1.

VEHICLE BROUGHT TO WORKSHOP
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2.

INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

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3.

CHECK LIN COMMUNICATION SYSTEM

(a) Check if the LIN communication system is functioning normally NETWORKING: LIN COMMUNICATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING (2008 Sequoia) .

Result

Result

Proceed to

LIN communication system is normal

A

LIN communication system is not normal

B
B

Go to LIN COMMUNICATION SYSTEM

A

4.

CHECK CAN COMMUNICATION SYSTEM

(a) Check if the CAN communication system is functioning normally NETWORKING: CAN COMMUNICATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING (2008 Sequoia) .

Result

Result

Proceed to

CAN communication system is normal

A

CAN communication system is not normal

B
B

Go to CAN COMMUNICATION SYSTEM

A

5.

PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table WINDOW / GLASS: WINDOW DEFOGGER SYSTEM: PROBLEM SYMPTOMS TABLE (2008 Sequoia) .

Result

Result

Proceed to

Fault is not listed in Problem Symptoms Table

A

Fault is listed in Problem Symptoms Table

B
B

Go to step 7
A

6.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU WINDOW / GLASS: WINDOW DEFOGGER SYSTEM: TERMINALS OF ECU (2008 Sequoia) .

(b) Data List / Active Test WINDOW / GLASS: WINDOW DEFOGGER SYSTEM: DATA LIST / ACTIVE TEST (2008 Sequoia) .

(c) Operation Check WINDOW / GLASS: WINDOW DEFOGGER SYSTEM: OPERATION CHECK (2008 Sequoia) .

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7.

REPAIR OR REPLACE
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8.

CONFIRMATION TEST
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END