Lexus NX: ECU Malfunction (B1003)
DESCRIPTION
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |
|---|---|---|---|---|
| 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) | 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) (Techstream display: Central Gateway) | A |
| DTC B1003 is output from the central gateway ECU (network gateway ECU) (Techstream display: Central Gateway) | B |
| A | .gif) | USE SIMULATION METHOD TO CHECK |
| B | | REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) |
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How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the power door lock control system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. CUSTOMER PROBLEM ANALYSIS CHECK HINT:
In troubleshooting, confirm that t
Inspection
INSPECTION PROCEDURE 1. INSPECT CRUISE CONTROL MAIN SWITCH (a) w/o Dynamic Radar Cruise Control System: (1) Measure the resistance according to the value(s) in the table below. *a Component without harness connected (Cruise Control Main Switch) - - Standard Resistance: Tester Connec
