CAUTION / NOTICE / HINT HINT:
PROCEDURE
(a) Measure the battery voltage. Standard voltage: 11 to 14 V If the voltage is below 11 V, replace or recharge the battery before proceeding to the next step.
(a) Use the Techstream to check if the CAN communication system is functioning normally. Click here OK: CAN communication system is functioning normally.
(a) Check for DTCs and note any codes that are output. Click here (b) Clear the DTCs. Click here (c) Recheck for DTCs. Try to reproduce the DTCs by duplicating the conditions indicated by the DTCs. Click here
HINT: Refer to Problem Symptoms Table. Click here
(a) Terminals of ECU Click here (b) Data List / Active Test Click here
NOTICE:
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Toyota Tundra Service Manual > Can Communication System: Check Bus 2 Line for Short to GND
DESCRIPTION There may be a short circuit between one of the CAN bus lines and GND when there is no resistance between terminal 18 (CA4H) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3, or terminal 17 (CA4L) of the central gateway ECU (network gateway ECU) and termin ...