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
(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 | | USE SIMULATION METHOD TO CHECK |
B | | REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) |
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COMPONENTS ILLUSTRATION *1 BACK DOOR CENTER GARNISH *2 BACK DOOR LOCK COVER *3 BACK DOOR SIDE GARNISH LH *4 BACK DOOR SIDE GARNISH RH *5 BACK DOOR TRIM BASE *6 BACK DOOR TRIM BOARD ASSEMBLY *7 POWER BACK DOOR SENSOR ASSEMBLY LH *8 PULL HANDLE ● Non-reu
INSPECTION PROCEDURE 1. INSPECT FRONT LUMBAR POWER SEAT SWITCH (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Switch Condition Specified Condition 3 (H) - 5 (B) Hold switch on Below 1 Ω 1 (R) - 2 (E) 2 (E) -
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