ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT REAR BODY TAIL GATE ASSEMBLY (a) Check that the clearance measurements of areas A to B are within the standard range. 
Standard measurement:
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Toyota Tundra Service Manual > Can Communication System: ECU Malfunction (B1003)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area B1003 ECU Malfunction A malfunction in the non-volatile storage of the central gateway ECU (network gateway ECU) is detected. Central gateway ECU (network gateway ECU) PROCEDURE 1. RECONFIRM DTC OUTPUT (a) Connect the Techstream ...
