Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001H417
Model Year Start: 2019 Model: RAV4 Prod Date Range: [02/2019 - 10/2019]
Title: PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (w/o Vacuum Brake Booster): C13A6; Open or Short Circuit in Motor; 2019 MY RAV4 RAV4 HV [02/2019 - 10/2019]

DTC

C13A6

Open or Short Circuit in Motor

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

Note

C13A6

Open or Short Circuit in Motor

One of the following conditions are met:

Detection conditions (1)

  1. Ignition switch ON or electric parking brake switch (integration control and panel assembly) assembly pulled to lock side with ignition switch off.
  2. Power supply voltage and +B voltage are normal, but motor circuit is malfunctioning for approximately 1 to 2 seconds.

Detection conditions (2)

  • With the ignition switch off, an overcurrent malfunction is continuously detected for 1 second or more

Detection conditions (3)

  • With the ignition switch ON and an overcurrent malfunction being continuously detected, the parking brake is locked and released 3 times
  • Wire harness or connector
  • Parking brake wire assembly
  • Parking brake actuator assembly
  • Parking brake ECU assembly

Yes

An electric parking brake system malfunction is displayed on the multi-information display.

DTC Detection Condition Combination Table: C13A6

 

Vehicle Condition

Pattern 1

Pattern 2

Pattern 3

Pattern 4

Diagnosis Condition

Electric parking brake switch (integration control and panel assembly) is operated to lock side with ignition switch off

-

-

-

Ignition switch ON

-

-

-

Ignition switch off

-

-

-

With the ignition switch ON and an overcurrent malfunction being continuously detected, the parking brake is locked and released

-

-

-

Malfunction Status

Parking brake motor circuit malfunction when power supply voltage and +B voltage are normal

-

-

An overcurrent malfunction is continuously detected

-

-

-

Detection Time

Approximately 1 to 2 seconds

Approximately 1 to 2 seconds

1 second or more

3 times

Trip Count

1 trip

1 trip

1 trip

1 trip

HINT:

If the conditions match either of these patterns, a DTC will be output.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • The electric parking brake may still operate up to 20 seconds after the ignition switch is turned off. Before disconnecting connectors or fuses, turn the ignition switch off and wait 20 seconds or more.
  • When replacing the parking brake ECU assembly, operate the electric parking brake switch (integration control and panel assembly) from the lock side to the release side, as the parking brake indicator light blinks when the ignition switch is first turned to ON.

PROCEDURE

1.

READ VALUE USING TECHSTREAM (RH ACTUATOR CURRENT STATUS / LH ACTUATOR CURRENT STATUS)

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON.

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / Electric Parking Brake / Data List.

(f) Read the Data List according to the display on the Techstream.

Chassis > Electric Parking Brake > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

RH Actuator Current Status

RH Actuator Current Status

Valid or Inval

Valid

-

LH Actuator Current Status

LH Actuator Current Status

Valid or Inval

Valid

-

Chassis > Electric Parking Brake > Data List

Tester Display

RH Actuator Current Status

LH Actuator Current Status

NEXT

2.

INSPECT PARKING BRAKE WIRE ASSEMBLY

*A

RH

*B

LH

*a

Front view of Parking Brake Wire Assembly

*b

(to Wire Harness Connector)

*c

(to Parking Brake Actuator Assembly)

-

-

(a) Remove the parking brake wire assembly.

(b) Check the parking brake wire assembly for damage.

OK:

No damage.

HINT:

If damaged, there may be a short in the wire harness or a short to ground.

(c) Inspect the parking brake wire assembly.

Standard Resistance:

RH

Tester Connection

Condition

Specified Condition

MM2-2 - M49-1 (RE-)

Always

Below 1 Ω

MM2-2 - M49-2 (RE+)

Always

10 kΩ or higher

MM2-2 or M49-1 (RE-) - Body ground

Always

10 kΩ or higher

MM2-1 - M49-2 (RE+)

Always

Below 1 Ω

MM2-1 - M49-1 (RE-)

Always

10 kΩ or higher

MM2-1 or M49-2 (RE+) - Body ground

Always

10 kΩ or higher

LH

Tester Connection

Condition

Specified Condition

NN2-2 - N57-1 (LE-)

Always

Below 1 Ω

NN2-2 - N57-2 (LE+)

Always

10 kΩ or higher

NN2-2 or N57-1 (LE-) - Body ground

Always

10 kΩ or higher

NN2-1 - N57-2 (LE+)

Always

Below 1 Ω

NN2-1 - N57-1 (LE-)

Always

10 kΩ or higher

NN2-1 or N57-2 (LE+) - Body ground

Always

10 kΩ or higher

NG

REPLACE PARKING BRAKE WIRE ASSEMBLY

OK

3.

CHECK HARNESS AND CONNECTOR (PARKING BRAKE ECU ASSEMBLY - PARKING BRAKE ACTUATOR ASSEMBLY)

(a) Turn the ignition switch off.

(b) Make sure the parking brake wire assembly is securely installed.

(c) Disconnect the M36 parking brake ECU assembly connector.

(d) Disconnect the M49 or N57 parking brake actuator assembly connector.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

RH

Tester Connection

Condition

Specified Condition

M36-1 (MRR+) - M49-2 (RE+)

Always

Below 1 Ω

M36-3 (MRR-) - M49-1 (RE-)

Always

Below 1 Ω

M36-1 (MRR+) or M49-2 (RE+) - Body ground

Always

10 kΩ or higher

M36-3 (MRR-) or M49-1 (RE-) - Body ground

Always

10 kΩ or higher

LH

Tester Connection

Condition

Specified Condition

M36-4 (MRL+) - N57-2 (LE+)

Always

Below 1 Ω

M36-6 (MRL-) - N57-1 (LE-)

Always

Below 1 Ω

M36-4 (MRL+) or N57-2 (LE+) - Body ground

Always

10 kΩ or higher

M36-6 (MRL-) or N57-1 (LE-) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.

INSPECT PARKING BRAKE ACTUATOR ASSEMBLY

(a) Remove the parking brake actuator assembly.

Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; PARKING BRAKE: ELECTRIC PARKING BRAKE ACTUATOR: REMOVAL

(b) Inspect the parking brake actuator assembly.

Click here 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; PARKING BRAKE: ELECTRIC PARKING BRAKE ACTUATOR: INSPECTION

OK

REPLACE PARKING BRAKE ECU ASSEMBLY

NG

REPLACE PARKING BRAKE ACTUATOR ASSEMBLY