DESCRIPTION There may be a short circuit between the CAN main bus lines when the resistance between terminals 18 (CA4H) and 17 (CA4L) of the central gateway ECU (network gateway ECU) is below 54 Ω.
WIRING DIAGRAM ![]() CAUTION / NOTICE / HINT CAUTION: When performing the confirmation driving pattern, obey all speed limits and traffic laws. NOTICE:
HINT:
PROCEDURE
(a) Disconnect the cable from the negative (-) battery terminal.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Reconnect the J169 central gateway ECU (network gateway ECU) connector.
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance: for 1UR-FE
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Toyota Tundra Service Manual > Can Communication System: Air Conditioning Amplifier Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Air Conditioning Amplifier Communication Stop Mode Any of the following conditions are met: Communication stop for "Air Conditioning Amplifier" is indicated on the "Communication Bus Check" screen of the Techstream. Click here Communication system DTCs ...