Lexus NX: Brake System Malfunction (C13A9)
DESCRIPTION
The parking brake ECU assembly receives the wheel speed information of each wheel from the skid control ECU (brake booster with master cylinder assembly) via CAN communication.
This DTC is stored when a malfunction occurs in the skid control ECU (brake booster with master cylinder assembly).
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory | Note |
|---|---|---|---|---|---|
| C13A9 | Brake System Malfunction | Both of following conditions are met:
|
| Yes | An electric parking brake system malfunction is displayed on the multi-information display. |
CAUTION / NOTICE / HINT
NOTICE:
When replacing the parking brake ECU assembly, operate the electric parking brake switch (integration control and panel assembly), as the parking brake indicator light (red) blinks when the power switch is first turned on (IG).
PROCEDURE
| 1. | CHECK DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) |
(a) Check for DTC.
Click here .gif)
| DTC is output | .gif) | GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM |
|
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| 2. | CHECK DTC (ELECTRIC PARKING BRAKE SYSTEM) |
(a) Clear the DTCs.
Click here
(b) Turn the power switch off.
(c) Check for DTC.
Click here
| DTC is output | | REPLACE PARKING BRAKE ECU ASSEMBLY |
| DTC is not output | | USE SIMULATION METHOD TO CHECK |
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Components
COMPONENTS ILLUSTRATION *A w/o Power Back Door *B w/ Power Back Door *1 BACK DOOR FINISH COVER LH *2 BACK DOOR FINISH COVER RH *3 BACK DOOR CENTER GARNISH *4 BACK DOOR LOCK ASSEMBLY *5 BACK DOOR LOCK COVER *6 BACK DOOR SIDE GARNISH LH *7 BACK DOOR SIDE G
