DTC C1622: Open or Short Circuit in Back Camera Signal [08/2013 - ]: Procedure

1. Disconnect the H97 multi-media module receiver assembly connector.
2. Disconnect the U6 rear television camera assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H97-39 (CA+) - U6-6 (CB+)	Always	Below 1 Ω
   H97-18 (V+) - U6-3 (CV+)	Always	Below 1 Ω
   H97-19 (V-) - U6-2 (CV-)	Always	Below 1 Ω
   H97-40 (CGND) - U6-5 (CGND)	Always	Below 1 Ω
   H97-39 (CA+) - Body ground	Always	10 kΩ or higher
   H97-18 (V+) - Body ground	Always	10 kΩ or higher
   H97-19 (V-) - Body ground	Always	10 kΩ or higher
   H97-40 (CGND) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Reconnect the H97 multi-media module receiver assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H97-40 (CGND) - Body ground	Always	Below 1 Ω
   H97-19 (V-) - 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
   H97-39 (CA+) - H97-40 (CGND)	Power switch on (IG) Shift lever in R	5.5 to 7.05 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Multi-media Module Receiver Assembly)

NG → See step   4 

OK: Go to next step 

1. Reconnect the U6 rear television camera assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Multi-media Module Receiver Assembly)

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT: 

   A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the multi-media module receiver assembly with the connector connected.

   OK

   Waveform is as shown in the illustration.

   Item	Content
   Terminal No. (Symbol)	H97-18 (V+) - H97-12 (GND1)
   Tool Setting	200 mV/DIV., 50 μsec./DIV.
   Condition	Power switch on (IG), shift lever in R

   HINT: 

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

   TEXT IN ILLUSTRATION
   
   

   *a	Waveform 1 (under normal conditions)
   *b	Waveform 2 (camera lens is covered, blacking out the screen)
   *c	Synchronized Signal
   *d	Video Waveform

NG → See step   5 

OK → See step   4