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OK: Your voice can be heard correctly. NG: REPLACE CELLULAR PHONE OK: Go to Next Step 2. CHECK SETTINGS a. Check if mute is set to ON. OK: Mute is not set to ON. NG: TURN MUTE OFF OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS VEHICLE SPEED SIGNAL CIRCUIT BETWEEN RADIO RECEIVER AND COMBINATION DESCRIPTION This circuit is necessary for the ASL (Auto Sound Leveliser) built into the radio receiver. Speed signals are received from the combination meter and used for the ASL. The ASL function automatically adjusts the sound data in order to enable the driver to hear clear audio sound HINT: A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter. The signal is If a short occurs in an ECU, all systems in the diagram below will not operate normally. WIRING DIAGRAM
2009 Toyota Tundra 2009 ACCESSORIES AND EQUIPMENT Audio/Visual - Tundra
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