DTC C1684: Side Camera Current Malfunction [04/2018 - ]: Procedure

1. Clear the DTCs.

   Chassis > Panoramic View Monitor > Clear DTCs 

2. Check for DTCs.

   Chassis > Panoramic View Monitor > Trouble Codes 

   OK

   DTC C1684 is not output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 - ] 

Result: 

NG 

See step  2

1. Disconnect the K36 parking assist ECU connector.
2. Disconnect the I13 outer rear view mirror assembly RH connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K36-6 (RCB+) - I13-14 (RCB+)	Always	Below 1 Ω
   K36-18 (RGND) - I13-17 (RGND)	Always	Below 1 Ω
   K36-6 (RCB+) or I13-14 (RCB+) - Body ground	Always	10 kΩ or higher
   K36-18 (RGND) or I13-17 (RGND) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

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
   K36-18 (RGND) - 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
   K36-6 (RCB+) - K36-18 (RGND)	Power switch on (ACC)	5.5 to 7.05 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE PARKING ASSIST ECU. Refer to  REMOVAL [04/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - ] 

Result: 

OK 

See step  4

1. Replace the side television camera assembly RH with a new or normally functioning one.

   Refer to REMOVAL [04/2018 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Clear the DTCs.

   Chassis > Panoramic View Monitor > Clear DTCs 

2. Check for DTCs.

   Chassis > Panoramic View Monitor > Trouble Codes 

   OK

   DTCs C1684 is not output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (SIDE TELEVISION CAMERA ASSEMBLY RH IS DEFECTIVE) 

Result: 

NG 

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH. Refer to  REMOVAL [04/2018 - ]