Toyota Tacoma 2015-2018 Service Manual: ECU Malfunction (B1003)

Toyota Tacoma 2015-2018 Service Manual / Can Communication / Can Communication System / ECU Malfunction (B1003)

DESCRIPTION

DTC No.	DTC Detection Condition	Trouble Area
B1003	A malfunction in the non-volatile storage of the central gateway ECU (network gateway ECU) is detected.	Central gateway ECU (network gateway ECU)

PROCEDURE

CHECK DTC

(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.

OK:

DTC B1003 is not output.

USE SIMULATION METHOD TO CHECK

REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)

Fail-safe Chart

FAIL-SAFE CHART 1. FAIL-SAFE FUNCTION (a) When communication fails in any of the CAN bus lines (communication lines), a fail-safe function(s) will operate. The fail-safe function that is specified ...

Clearance Warning ECU Communication Stop Mode

DESCRIPTION Detection Item Symptom Trouble Area Clearance Warning ECU Communication Stop Mode Either Condition is met: Commu ...

Other materials:

Steering Pad Switch
Components COMPONENTS ILLUSTRATION *1 STEERING PAD SWITCH ASSEMBLY - - Removal REMOVAL PROCEDURE 1. REMOVE STEERING PAD (See page ) 2. REMOVE STEERING PAD SWITCH ASSEMBLY (a) Disconnect the 2 connectors. ...

IG2 Signal Malfunction (B2788)
DESCRIPTION This DTC is stored when the steering lock ECU (steering lock actuator or UPR bracket assembly) detects an IG2 power supply malfunction. HINT: The steering lock ECU (steering lock actuator or UPR bracket assembly) is not connected to the CAN communication system. However, the steer ...

Removal
REMOVAL PROCEDURE 1. PRECAUTION NOTICE: After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before pr ...