DTC C1622: Back Camera Disconnected [12/2019 - 10/2022]: Procedure

1. Disconnect the H2 radio and display receiver assembly connector.
2. Disconnect the W16*1 or W15*2 rear television camera assembly connector.
   1. *1: w/o Stereo Component Amplifier Assembly
   2. *2: w/ Stereo Component Amplifier Assembly
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   W/O STEREO COMPONENT AMPLIFIER ASSEMBLY
   
   

   Tester Connection	Condition	Specified Condition
   H2-30 (CA+) - W16-6 (CB+)	Always	Below 1 Ω
   H2-28 (V+) - W16-3 (CV+)	Always	Below 1 Ω
   H2-29 (V-) - W16-2 (CV-)	Always	Below 1 Ω
   H2-27 (CGND) - W16-5 (CGND)	Always	Below 1 Ω
   H2-26 (CSLD) - Body ground	Always	Below 1 Ω
   H2-30 (CA+) or W16-6 (CB+) - Body ground	Always	10 kΩ or higher
   H2-28 (V+) or W16-3 (CV+) - Body ground	Always	10 kΩ or higher
   H2-29 (V-) or W16-2 (CV-) - Body ground	Always	10 kΩ or higher
   H2-27 (CGND) or W16-5 (CGND) - Body ground	Always	10 kΩ or higher

   W/ STEREO COMPONENT AMPLIFIER ASSEMBLY
   
   

   Tester Connection	Condition	Specified Condition
   H2-30 (CA+) - W15-6 (CB+)	Always	Below 1 Ω
   H2-28 (V+) - W15-3 (CV+)	Always	Below 1 Ω
   H2-29 (V-) - W15-2 (CV-)	Always	Below 1 Ω
   H2-27 (CGND) - W15-5 (CGND)	Always	Below 1 Ω
   H2-26 (CSLD) - Body ground	Always	Below 1 Ω
   H2-30 (CA+) or W15-6 (CB+) - Body ground	Always	10 kΩ or higher
   H2-28 (V+) or W15-3 (CV+) - Body ground	Always	10 kΩ or higher
   H2-29 (V-) or W15-2 (CV-) - Body ground	Always	10 kΩ or higher
   H2-27 (CGND) or W15-5 (CGND) - 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. Reconnect the H2 radio and display receiver assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H2-29 (V-) - Body ground	Always	Below 1 Ω
   H2-27 (CGND) - Body ground	Always	Below 1 Ω

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   H2-30 (CA+) - H2-27 (CGND)	Ignition switch ACC	5.5 to 7.05 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

Refer to REMOVAL [12/2019 - 10/2022]

Result: 

OK 

See step  3

1. Reconnect the W16*1 or W15*2 rear television camera assembly connector.
   1. *1: w/o Stereo Component Amplifier Assembly
   2. *2: w/ Stereo Component Amplifier Assembly
2. Using an oscilloscope, check the waveform of the rear television camera assembly.

   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 similar to that shown in the illustration.

   Item	Content
   Measurement terminal	H2-28 (V+) - H2-29 (V-)
   Measurement setting	200 mV/DIV., 50 μs./DIV.
   Condition	Ignition switch ON, shift lever in R

   HINT: 

   • The video waveform changes according to the image sent by the rear television camera assembly.
   • The video waveform is constantly output when the ignition switch is turned to ACC.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Waveform 1 (camera lens is not covered, displaying an image)
   *b	Waveform 2 (camera lens is covered, blacking out the screen)
   *c	Synchronization Signal
   *d	Video Waveform

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

Refer to REMOVAL [12/2019 - 10/2022]

Result: 

NG 

REPLACE REAR TELEVISION CAMERA ASSEMBLY 

Refer to REMOVAL [12/2019 - 11/2023]