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:
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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:
Inspection
INSPECTION PROCEDURE 1. INSPECT TIRES (a) Check the tires for wear and proper inflation pressure. Specified Pressure (When Tire is Cool): Tire Size Front kPa (kgf/cm2, psi) Rear kPa (kgf/cm2, psi) 225/65R17 102H 240 (2.4, 35)*1 250 (2.5, 36)*2 240 (2.4, 35)*1 250 (2.5, 36)*2 225/
Reassembly
REASSEMBLY PROCEDURE 1. INSTALL NUT (a) Install the 2 nuts. 2. INSTALL SYMBOL EMBLEM Click here 3. INSTALL BACK DOOR OUTSIDE GARNISH PROTECTOR (a) Clean the back door outside garnish surface. (1) Remove the double-sided tape from the back door outside garnish sub-assembly. (2) Wipe off any tape
