DESCRIPTION If the sliding function and tilt function do not operate, there may be a malfunction in the sliding roof ECU power source circuit. WIRING DIAGRAM 
CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing the following procedure. PROCEDURE
(a) Use the Data List to check if the ignition switch signal is functioning properly. Click here
OK: The Techstream displays as shown in the table according to the operation of each switch.
(a) Disconnect the W3 ECU connector. (b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
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Toyota Tundra Service Manual > Airbag System: Operation Check
OPERATION CHECK PRECAUTION FOR OPERATION CHECK CAUTION: Use the correct procedure to replace the airbag parts. CHECK SRS WARNING LIGHT (a) Primary check (1) Turn the ignition switch to ON and check that the SRS warning light turn on. (2) Turn the ignition switch off. Wait for at least 2 seconds, and ...
