SYSTEM DIAGRAM The configuration of the electronic control system for the A760E automatic transmission is as shown in the following chart. 
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Toyota Tundra Service Manual > Engine Immobiliser System (w/o Smart Key System): Push Switch / Key Unlock Warning Switch Malfunction (B2780)
DESCRIPTION This DTC is stored if the transponder key ECU assembly does not detect that the unlock warning switch assembly is on even when the ignition switch is ON. DTC No. Detection Item DTC Detection Condition Trouble Area Note B2780 Push Switch / Key Unlock Warning Switch Malfunction The unlock ...
