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:

Blind Spot Monitor Master Module Beam Axis Inspection Incomplete (C1ABB)
DESCRIPTION This DTC is stored when a beam axis inspection has not been performed for the blind spot monitor sensor LH. HINT: This DTC is always stored after replacing a blind spot monitor sensor. The purpose of this DTC is to ensure that beam axis inspection is performed. Completing the be ...

Diagnosis System
DIAGNOSIS SYSTEM 1. DESCRIPTION The ECU stores trouble codes when malfunctions occur. The diagnostic system allows for reading of the trouble codes from the DLC3. Use the Techstream to help diagnose and repair the problem. 2. CHECK DLC3 (a) Check the DLC3 (See page ). 3. INSPECT BATTERY VOLT ...

Diagnosis System
DIAGNOSIS SYSTEM 1. DESCRIPTION The 4 wheel drive control ECU records DTCs when the ECU detects a malfunction in the ECU itself or in system circuits. The DTCs can be read through the DLC3 of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions ...