DTC C060E-2A: Left Electric Parking Brake Actuator Signal Stuck In Range [09/2020 - ]: Procedure

1. Using the Techstream, check for DTCs other than DTC C060E-2A.

   Chassis > Brake/EPB > Trouble Codes 

   Result

   Result	Proceed to
   Only DTC C060E-2A is output	A
   DTCs other than C060E-2A are output	B

Result: 

B 

GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2020 - ] 

Result: 

A 

See step  2

1. Turn the engine switch off.
2. Make sure that there is no looseness at the locking part and the connecting part of the connectors.

   OK

   The connector is securely connected.

3. Disconnect the tQ1 and t1 No. 2 parking brake wire assembly connectors.
4. Check both the connector case and the terminals for deformation and corrosion.

   OK

   No deformation or corrosion.

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of No. 2 Parking Brake Wire Assembly	*b	(to wire harness connector)
   *c	(to Parking Brake Actuator Assembly LH)	-	-

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   tQ1-2 - t1-2 (MRL+)	Always	Below 1 Ω
   tQ1-2 or t1-2 (MRL+) - Body ground and other terminals	Always	10 kΩ or higher
   tQ1-1 - t1-1 (MRL-)	Always	Below 1 Ω
   tQ1-1 or t1-1 (MRL-) - Body ground and other terminals	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY 

Result: 

OK 

See step  3

1. Turn the engine switch off.
2. Make sure the No. 2 parking brake wire assembly is securely installed.
3. Disconnect the A111 skid control ECU (brake actuator assembly) connector.
4. Disconnect the t1 parking brake actuator assembly LH connector.
5. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A111-3 (MRL+) - t1-2 (MRL+)	Always	Below 1 Ω
   A111-2 (MRL-) - t1-1 (MRL-)	Always	Below 1 Ω
   A111-3 (MRL+) or t1-2 (MRL+) - Body ground	Always	10 kΩ or higher
   A111-2 (MRL-) or t1-1 (MRL-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Enter rear brake pad replacement mode.

   Refer to REAR BRAKE PAD REPLACEMENT MODE [09/2020 - ] 

2. Turn the engine switch off.
3. Check that the rotating parts are not seized or the actuator is not spinning freely.
   1. Check that the parking brake actuator assembly LH is installed properly to the rear brake caliper and that it is not spinning freely.

      For the parking brake actuator assembly LH removal procedure: Refer to REMOVAL [09/2020 - ]

   2. Check that there is no damage to the rotating parts from the parking brake actuator assembly LH to the rear brake caliper.
   3. Inspect the parking brake actuator assembly LH and check that it operates correctly.

      Refer to INSPECTION [09/2020 - ]

   4. Check that the rear brake caliper threaded part rotates and that the rear disc brake piston moves outward.

      HINT: 

      For the check procedures, refer to the parking brake forced release method when not using the Techstream.

      Refer to OPERATION METHOD [09/2020 - ]

   HINT: 

   Return to normal mode after work is complete.

   Refer to REAR BRAKE PAD REPLACEMENT MODE [09/2020 - ] 

   Result

   Result	Proceed to
   Parking brake actuator assembly LH is malfunctioning	A
   Other than parking brake actuator assembly LH is malfunctioning	B

Result: 

A 

REPLACE PARKING BRAKE ACTUATOR ASSEMBLY LH. Refer to  REMOVAL [09/2020 - ] 

Result: 

B 

REPAIR OR REPLACE ABNORMAL PARTS