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 |
READ NEXT:
EPB High Temperature (C13AA)
DESCRIPTION If the electric parking brake is used continuously, the parking brake actuator assembly overheat prevention stops the system. This DTC is stored to protect the system and is not a malfunct
Open in +B Circuit (C13AD)
DESCRIPTION The parking brake ECU assembly is supplied with power to operate the motor via the +B and +B2 terminals. DTC No. Detection Item DTC Detection Condition Trouble Area Memory Not
System Information not Received (C13AE)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note C13AE System Information not Received Both of following conditions are met:
Power switch is
SEE MORE:
Installation
INSTALLATION CAUTION / NOTICE / HINT NOTICE:
When the brake pedal is first depressed after replacing the brake pads or pushing back the disc brake piston, DTC C1214 may be output. As there is no malfunction, clear the DTC.
While the auxiliary battery is connected, even if the power switch is of
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspect
