Lexus NX: Electric Parking Brake System
- Precaution
- Parts Location
- System Diagram
- System Description
- How To Proceed With Troubleshooting
- Test Mode Procedure
- Problem Symptoms Table
- Dtc Check / Clear
- Freeze Frame Data
- Fail-safe Chart
- Data List / Active Test
- Diagnostic Trouble Code Chart
- Deceleration Sensor (C1245)
- Open Circuit in Power Source Circuit (C13A0,C13A5,C13B0)
- Short Circuit in Power Source Circuit (C13A1)
- Engine Switch/Power Switch Malfunction (C13A2)
- Open or Short Circuit in Lock Switch Circuit (C13A3,C13AB)
- Open or Short Circuit in Release Switch Circuit (C13A4,C13AC)
- Open or Short Circuit in Motor (C13A6)
- Actuator Malfunction (C13A7)
- Brake System Malfunction (C13A9)
- EPB High Temperature (C13AA)
- Open in +B Circuit (C13AD)
- System Information not Received (C13AE)
- Control Module Communication Bus OFF (U0073,U0124,U0129,U0293)
- Electric Parking Brake does not Operate
- Electric Parking Brake System AUTO Function Circuit
- Electric Parking Brake AUTO Indicator Light Circuit
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Precaution
PRECAUTION TROUBLESHOOTING PRECAUTIONS (a) When there is a malfunction with terminal contact points or a problem with the installation of a part, reconnecting the connectors or removal/installation of
Parts Location
PARTS LOCATION ILLUSTRATION *1 NO. 1 ENGINE ROOM RELAY BLOCK
EPB NO. 1 FUSE
EPB NO. 2 FUSE
HINT: EPB stands for Electric Parking Brake. *2 NO. 2 ENGINE ROOM RELAY BLOCK
ECU-B NO.
System Diagram
SYSTEM DIAGRAM
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Components
COMPONENTS ILLUSTRATION *1 EXHAUST VALVE *2 EXHAUST VALVE GUIDE BUSH *3 INTAKE VALVE *4 INTAKE VALVE GUIDE BUSH *5 NO. 1 STRAIGHT SCREW PLUG *6 NO. 2 STRAIGHT SCREW PLUG *7 RING PIN *8 SPARK PLUG TUBE *9 VALVE SPRING SEAT *10 VALVE STEM OIL SEAL
Short in Knee Airbag (D Side) Squib Circuit (B1860-B1863)
DESCRIPTION The driver side knee squib circuit consists of the airbag ECU assembly and lower No. 1 instrument panel airbag assembly. This circuit instructs the SRS to deploy when deployment conditions are met. These DTCs are stored when a malfunction is detected in the driver side knee squib circuit
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