Toyota Tundra Service Manual > Can Communication System: Open in Bus 1 Main Bus Line
DESCRIPTION There may be an open circuit in one of the CAN main bus lines when the resistance between terminals 23 (CA1H) and 8 (CA1L) of the central gateway ECU (network gateway ECU) is 70 Ω or higher. Symptom Trouble Area Resistance between terminals 23 (CA1H) and 8 (CA1L) of the central gateway ...
