DTC P1770-62: Door Lock Switch / Curtesy Switch Signal Compare Failure [10/2022 - ]: Procedure

Pre-procedure1

• Turn the ignition switch to ON.

• Read the Data List according to the display on the GTS.

  Powertrain > Transmission > Data List 

  Tester Display
  Door Open Switch Status

  Result

  Result	Proceed to
  Does not change ON/OFF in accordance with the opening/closing of the driver door	A
  Changes ON/OFF in accordance with the opening/closing of the driver door	B

Post-procedure1

• Turn the ignition switch off.

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM. Refer to  DIAGNOSIS SYSTEM [10/2022 - 08/2023]  , or refer to  DIAGNOSIS SYSTEM [08/2023 - 10/2024]  , or refer to  DIAGNOSIS SYSTEM [10/2024 - ] 

Result: 

A 

See step  2

Pre-procedure1

• Open the driver door.
• Turn the ignition switch to ON.

• Measure the voltage according to the value(s) in the table below.

  Standard Voltage

  Tester Connection	Condition	Specified Condition	Result
  C35-8 (DROP) - Body ground	Ignition switch ON and driver door open	Below 1 V	V

  Result

  Proceed to
  OK
  NG

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  *a	Component with harness connected Transmission Floor Shift Assembly (Shift Control ECU)

Post-procedure1

• Turn the ignition switch off.
• Close the driver door.

Result: 

OK 

REPLACE TRANSMISSION FLOOR SHIFT ASSEMBLY (SHIFT CONTROL ECU). Refer to  REMOVAL [10/2022 - ] 

Result: 

NG 

See step  3

Pre-procedure1

• Open the driver door.
• Turn the ignition switch to ON.

• Measure the voltage according to the value(s) in the table below.

  Standard Voltage

  Tester Connection	Condition	Specified Condition	Result
  H116-4 (DRO2) - Body ground	Ignition switch ON and driver door open	Below 1 V	V

  Result

  Proceed to
  OK
  NG

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  *a	Component with harness connected (Integration Control Supply (Integrated Capacitor))

Post-procedure1

• Turn the ignition switch off.
• Close the driver door.

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION CONTROL SUPPLY (INTEGRATED CAPACITOR) - TRANSMISSION FLOOR SHIFT ASSEMBLY (SHIFT CONTROL ECU)) 

Result: 

NG 

See step  4

Pre-procedure1

• Open the driver door.
• Turn the ignition switch to ON.

• Measure the voltage according to the value(s) in the table below.

  Standard Voltage

  Tester Connection	Condition	Specified Condition	Result
  H116-17 (DRO1) - Body ground	Ignition switch ON and driver door open	Below 1 V	V

  Result

  Proceed to
  OK
  NG

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  *a	Component with harness connected (Integration Control Supply (Integrated Capacitor))

Post-procedure1

• Turn the ignition switch off.
• Close the driver door.

Result: 

OK 

REPLACE INTEGRATION CONTROL SUPPLY (INTEGRATED CAPACITOR). Refer to  REMOVAL [10/2022 - 08/2023]  , or refer to  REMOVAL [08/2023 - ] 

Result: 

NG 

See step  5

Pre-procedure1

• Open the driver door.
• Turn the ignition switch to ON.

• Measure the voltage according to the value(s) in the table below.

  Standard Voltage

  Tester Connection	Condition	Specified Condition	Result
  D34-7 (DCTY) - Body ground	Ignition switch ON and driver door open	Below 1 V	V

  Result

  Proceed to
  OK
  NG

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  *a	Component with harness connected (Front Door Lock with Motor Assembly LH)

Post-procedure1

• Turn the ignition switch off.
• Close the driver door.

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION CONTROL SUPPLY (INTEGRATED CAPACITOR) - FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH) 

Result: 

NG 

REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH. Refer to  REMOVAL [10/2022 - 08/2023]  , or refer to  REMOVAL [08/2023 - ]