Toyota Camry (XV70): ECU Malfunction (B1003)

Toyota Camry Repair Manual XV70 (2018-2024) / Power Source, Network / Networking / Can Communication System / 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 ignition switch to ON.

(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)

SEE MORE:

Brake Warning Light does not Come ON

DESCRIPTION The skid control ECU (brake actuator assembly) controls the brake system warning light (red indicator) in the combination meter assembly via CAN communication. CAUTION / NOTICE / HINT NOTICE: After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor ze

Components

COMPONENTS ILLUSTRATION *1 LUGGAGE COMPARTMENT DOOR COVER - - ILLUSTRATION *A for LED Type Back-up Light *B for Bulb Type Back-up Light *1 BACK-UP LIGHT BULB *2 REAR LIGHT ASSEMBLY *3 REAR LIGHT CORD *4 REAR L

Toyota Camry (XV70): ECU Malfunction (B1003)

READ NEXT:

Skid Control ECU Communication Stop Mode

Clearance Warning ECU Communication Stop Mode

Air Conditioning Amplifier Communication Stop Mode

SEE MORE:

Brake Warning Light does not Come ON

Components