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) |
READ NEXT:
Lost Communication with "Door Control Module A" (U0199)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from U0199 Lost Communication with "Door Control Module A" There is no communication from the oute
Lost Communication with "Door Control Module B" (U0200)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from U0200 Lost Communication with "Door Control Module B" There is no communication from the oute
Lost Communication with "Seat Control Module A" (U0208)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from U0208 Lost Communication with "Seat Control Module A" There is no communication from the fron
SEE MORE:
Removal
REMOVAL PROCEDURE 1. REMOVE STEERING WHEEL ASSEMBLY Click here 2. REMOVE STEERING PAD SWITCH ASSEMBLY Click here 3. REMOVE CRUISE CONTROL MAIN SWITCH Click here 4. REMOVE SHIFT PADDLE SWITCH (TRANSMISSION SHIFT SWITCH ASSEMBLY) Click here 5. REMOVE STEERING WHEEL HEATER CONTROL ASSEMBLY (
Rough Idling (P1605)
DESCRIPTION When the engine is idling stably under a low load, if the idle speed drops or becomes unstable, this DTC will be stored. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troublesho
