ON-VEHICLE INSPECTION PROCEDURE 1. CHECK STEERING PAD (VEHICLE NOT INVOLVED IN COLLISION) (a) Perform a diagnostic system check (see page ). (b) With the steering pad installed on the vehicle, perform a visual check. If there are any defects as mentioned below, replace the steering pad with a new one: Cuts, minute cracks or marked discoloration on the steering pad top surface or in the grooved portion. 2. CHECK STEERING PAD (VEHICLE INVOLVED IN COLLISION AND AIRBAG HAS NOT DEPLOYED) (a) Perform a diagnostic system check (see page ). (b) With the steering pad removed from the vehicle, perform a visual check. If there are any defects as mentioned below, replace the steering pad or steering wheel assembly with a new one:
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Toyota Tundra Service Manual > Engine Immobiliser System (w/o Smart Key System): Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) The transponder key ECU assembly controls the engine immobiliser system. Engine immobiliser system data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link Connector 3 (DLC3). CHECK DLC3 (a) Check the DLC3. Click here INSPECT BATTERY VOLTAGE ...