DESCRIPTION The ECM sends signals such as A/T information signals, dynamic radar cruise control operation signals, brake operation demand signals, and buzzer operation demand signals to the skid control ECU (brake actuator assembly) when the dynamic radar cruise control is operating. Therefore, if the skid control ECU (brake actuator assembly) detects a communication error with the ECM, it sends a malfunction signal back to the ECM.
CAUTION / NOTICE / HINT NOTICE:
PROCEDURE
(a) Using the Techstream, check if the CAN communication system is functioning normally. Click here
(a) Clear the DTCs. Click here (b) Perform the following to make sure that the DTC detection conditions are met. HINT: If the detection conditions are not met, the malfunction cannot be detected.
(c) Check for DTCs. Click here
(a) Replace the ECM. for 1UR-FE: Click here for 3UR-FE: Click here
for 3UR-FBE: Click here
(a) Clear the DTCs. Click here (b) Perform the following to make sure that the DTC detection conditions are met. HINT: If the detection conditions are not met, the malfunction cannot be detected.
(c) Check for DTCs. Click here
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Toyota Tundra Service Manual > Engine Immobiliser System (w/o Smart Key System): Engine Immobiliser System Malfunction (B2799)
DESCRIPTION The ECM stores this DTC when a communication line between the ECM and transponder key ECU assembly is malfunctioning or the communication ID of the ECM and transponder key ECU assembly do not match. DTC No. Detection Item DTC Detection Condition Trouble Area Note B2799 Engine Immobiliser ...