Lexus ES: ECU Malfunction (B1003)
Lexus ES (XZ10) Service Manual / Power Source & Network / Networking / Can Communication System (for Hv Model) / 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 power switch on (IG).
(c) Turn the Techstream 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 |
| A | .gif) | USE SIMULATION METHOD TO CHECK |
| B | | REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) |
.gif)
READ NEXT:
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Diagnostic Trouble Code Chart DTC No. Detection Item Trouble Area Link B1003 ECU Malfunction Central gateway ECU (network gateway ECU)
Data List / Active Test
DATA LIST / ACTIVE TEST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faul
Fail-safe Chart
FAIL-SAFE CHART 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 for ea
SEE MORE:
Shut Down Signal Circuit
DESCRIPTION The cause of the malfunction may be a shutdown signal. Check whether there is a shutdown signal +B short circuit. Related Parts Check Area Inspection HSDN terminal Check that the HSDN terminal voltage decreases to check for an open or short circuit while READY off (IG ON).
Right Rear Wheel Speed Sensor Circuit Short to Battery (C051212)
DESCRIPTION Each speed sensor detects wheel speed and sends signals to the skid control ECU (brake actuator assembly). These signals are used by the ABS control. The speed sensor detects the magnetic fields of the speed sensor rotor as it rotates and outputs a pulse signal. The frequency of the puls
© 2016-2026 Copyright www.lexguide.net
