Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: ECU Malfunction (B1003)

DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
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 to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Body Electrical / Central Gateway / Trouble Codes.

Body Electrical > Central Gateway > Trouble Codes

Result	Proceed to
DTC B1003 is not output from the central gateway ECU (network gateway ECU)	A
DTC B1003 is output from the central gateway ECU (network gateway ECU)	B

USE SIMULATION METHOD TO CHECK

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Motor Generator Control System: DC/DC Converter Current Sensor Circuit Short to Ground (P0E5111,P0E5115,P0E511F)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate P0E5111 DC/DC Converter Current Sensor Circuit Short to Ground Short to GND detected in reactor current sensor circuit (1 trip detection logic) Inverter with converter assembly Comes on Master Warning Light: ...

Toyota Avalon (XX50) 2019-2022 Owners Manual