C13AD

PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM: C13AD/23: Open in +B Circuit

DTC C13AD/23 - Open in +B Circuit

DESCRIPTION





HINT: *: This value is based on the assumption that the auxiliary battery voltage is 12 V.

WIRING DIAGRAM





INSPECTION PROCEDURE
NOTICE:
- If the electric parking brake ECU or electric parking brake actuator is replaced, perform the "RESET MEMORY" and "ACQUIRE TENSION SENSOR ZERO POINT" procedures Programming and Relearning.
- Even after the power switch is turned OFF, the electric parking brake ECU may store a DTC as a result of removing a connector or fuse, as the ECU is still operating. Therefore, during inspection or replacement, turn the power switch OFF and wait for 20 seconds before removing the following: 1) connectors of the electric parking brake ECU, and 2) fuses of the electric parking brake system circuit.

PROCEDURE

1. INSPECT FUSE (E-PKB)
(a) Remove the E-PKB H-fuse from the luggage room junction block.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






Result





B -- CHECK HARNESS AND CONNECTOR (ECU - AUXILIARY BATTERY)
A -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (ECU - FUSE)
(a) Disconnect the S46 ECU connector.





(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- CHECK FOR SHORTS IN ALL HARNESSES AND CONNECTORS CONNECTED TO FUSE AND REPLACE FUSE
OK -- REPLACE FUSE
3. CHECK HARNESS AND CONNECTOR (ECU - AUXILIARY BATTERY)
(a) Disconnect the S46 ECU connector.





(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. CHECK ELECTRIC PARKING BRAKE ECU (DATA LIST)
(a) Turn the power switch OFF.
(b) Connect the intelligent tester or Techstream to the DLC3.
(c) Turn the power switch ON (IG) and the tester ON.
(d) Enter the following menus:
(1) Intelligent tester - Select: DIAGNOSIS / OBD/MOBD / CHASSIS / ELECTRIC PKB / DATA LIST.
(2) Techstream - Select: Chassis / Electric Parking Brake / Data List.
(e) Check the values by referring to the table below.
(1) Intelligent tester

ELECTRIC PKB





(2) Techstream

Electric Parking Brake





OK:
Values are as shown in normal condition.
NG -- REPLACE ELECTRIC PARKING BRAKE ECU
OK -- USE SIMULATION METHOD TO CHECK