Lexus NX: EPB System Malfunction (C13AF)
Lexus NX Service Manual / Brake / Brake Control / Dynamic Control Systems / Electronically Controlled Brake System / EPB System Malfunction (C13AF)
DESCRIPTION
The skid control ECU (brake booster with master cylinder assembly) is connected to the parking brake ECU assembly via CAN communication. If an electric parking brake system malfunction occurs, this code is output.
| DTC No. | Detection Item | INF Code | DTC Detection Condition | Trouble Area | Note |
|---|---|---|---|---|---|
| C13AF | EPB System Malfunction | 420 | Electric parking brake system malfunction signal continues for 1.5 seconds. | Parking brake ECU assembly | EPB: Electric parking brake system |
PROCEDURE
| 1. | CHECK FOR DTC (ELECTRIC PARKING BRAKE SYSTEM) |
(a) Check for electric parking brake system DTCs and record any codes that are output.
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| NEXT | .gif) | INSPECT ELECTRIC PARKING BRAKE SYSTEM |
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Steering Angle Sensor Initialization Incomplete (C1439,C1445)
DESCRIPTION The skid control ECU (brake booster with master cylinder assembly) acquires the steering sensor zero point every time the power switch is turned on (IG) and the vehicle is driven at 35 km/
Steering Angle Sensor Unusual Bank Angle Detected (C1440)
DESCRIPTION If the skid control ECU (brake booster with master cylinder assembly) determines that the vehicle is being driven at a steep bank angle, the skid control ECU (brake booster with master cyl
Invalid Data Received from Deceleration Sensor (C1442,C1443)
DESCRIPTION The skid control ECU (brake booster with master cylinder assembly) receives signals from the yaw rate and acceleration sensor (airbag ECU assembly) via the CAN communication system. The ai
SEE MORE:
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the blind spot monitor system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. CUSTOMER PROBLEM ANALYSIS
NEXT 3. INSPECT AUXILIARY BATTE
Torque Sensor Zero Point Adjustment Undone (C1515,C1516)
DESCRIPTION These DTCs do not indicate a malfunction. The power steering ECU assembly stores C1515 when it determines that torque sensor zero point calibration has not been performed. The power steering ECU assembly stores C1516 when it determines that torque sensor zero point calibration has not co
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