DTC C1682: Front Camera Current Malfunction [12/2019 - 10/2022]: Procedure

1. Disconnect the H19 parking assist ECU connector.
2. Disconnect the B5 front television camera assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H19-15 (BCB+) - B5-6 (BCB+)	Always	Below 1 Ω
   H19-37 (BGND) - B5-5 (BGND)	Always	Below 1 Ω
   H19-15 (BCB+) or B5-6 (BCB+) - Body ground	Always	10 kΩ or higher
   H19-37 (BGND) or B5-5 (BGND) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

1. Remove the parking assist ECU with the connector still connected.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component with harness connected (Parking Assist ECU)

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H19-37 (BGND) - Body ground	Always	Below 1 Ω

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   H19-15 (BCB+) - H19-37 (BGND)	Ignition switch ON	5.5 to 7.05 V
   H19-15 (BCB+) - H19-37 (BGND)	Ignition switch off	Below 1 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE FRONT TELEVISION CAMERA ASSEMBLY. Refer to  REMOVAL [12/2019 - 11/2023] 

Result: 

NG 

REPLACE PARKING ASSIST ECU. Refer to  REMOVAL [12/2019 - 10/2022]