DTC C1622: Back Camera Disconnected [11/2020 - 12/2022]: Procedure

Pre-procedure1

1. Clear the DTCs.

   Body Electrical > Navigation System > Clear DTCs 

2. Turn the ignition switch off.
3. Turn the ignition switch on (READY).
4. Change the shift position to R to display the rear image.

   Procedure1

5. Check for DTCs.

   Body Electrical > Navigation System > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   DTCs are output	B

   Post-procedure1

6. None

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2020 - ] 

Result: 

B 

See step  2

Pre-procedure1

1. Disconnect the D56 radio and display receiver assembly connector.
2. Disconnect the K5 rear television camera assembly connector.

   Procedure1

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K5-6 (CB+) - D56-30 (CA+)	Always	Below 1 Ω
   K5-3 (CV+) - D56-28 (V+)	Always	Below 1 Ω
   K5-2 (CV-) - D56-29 (V-)	Always	Below 1 Ω
   K5-5 (CGND) - D56-27 (CGND)	Always	Below 1 Ω
   K5-6 (CB+) - Body ground	Always	10 kΩ or higher
   K5-3 (CV+) - Body ground	Always	10 kΩ or higher
   K5-2 (CV-) - Body ground	Always	10 kΩ or higher
   K5-5 (CGND) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

   Post-procedure1

4. None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

Pre-procedure1

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D56-[27] (CGND) - Body ground	Always	Below 1 Ω

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component with harness connected (Radio and Display Receiver Assembly)

   Procedure1

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   D56-[30] (CA+) - Body ground	Ignition switch on (READY)	5.5 to 7.05 V

   Result

   Proceed to
   OK
   NG

   Post-procedure1

3. None

Result: 

NG 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [11/2020 - 12/2022] 

Result: 

OK 

See step  4

1. Check the waveform of the rear television camera assembly using an oscilloscope.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component with harness connected (Radio and Display Receiver Assembly)	*b	Waveform 1
   *c	Waveform 2	*d	Synchronized Signal
   *e	Video Waveform	-	-

   HINT: 

   A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the radio and display receiver assembly with the connector connected.

   OK

   Waveform is as shown in the illustration.

   Item	Content
   Terminal No. (Symbol)	D56-[28] (V+) - D56-[29] (V-)
   Tool Setting	200 mV/DIV., 50 μsec./DIV.
   Condition	Waveform 1: Ignition switch on (READY), camera lens is not covered, displaying an image Waveform 2: Ignition switch on (READY), camera lens is covered, blacking out the screen

   HINT: 

   The video waveform changes according to the image sent by the rear television camera assembly.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2020 - ] 

Result: 

NG 

See step  5

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

   HINT: 

   Refer to REMOVAL [11/2020 - 12/2022]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  6

Pre-procedure1

1. Clear the DTCs.

   Body Electrical > Navigation System > Clear DTCs 

2. Turn the ignition switch off.
3. Turn the ignition switch on (READY).
4. Change the shift position to R to display the rear image.

   Procedure1

5. Check for DTCs.

   Body Electrical > Navigation System > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   DTCs are output	B

   Post-procedure1

6. None

Result: 

A 

END (REAR TELEVISION CAMERA ASSEMBLY WAS DEFECTIVE) 

Result: 

B 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [11/2020 - 12/2022]