OPERATION CHECK
1. CHECK WINDOW DEFOGGER SYSTEM OPERATION
(a) When the ignition switch is turned to ON and the heater control (window defogger switch) is pressed, check that the window defogger operates.
How To Proceed With Troubleshooting
Problem Symptoms TableCustomize Parameters
CUSTOMIZE PARAMETERS
1. CUSTOMIZING FUNCTION WITH TECHSTREAM
NOTICE:
When the customer requests a change in a function, first make sure that
the function can be customized.
Be sure to make a note of the current settings before customizing.
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General Information
GENERAL INFORMATION
A large number of ECU controlled systems are used in the 4RUNNER. In
general, ECU controlled systems are considered to be very intricate, requiring
a high level of technical knowledge to troubleshoot. However, most problem
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