DTC C1622: Back Camera Disconnected [10/2013 - ]: Procedure

1. Disconnect the E19 navigation ECU sub-assembly connector.
2. Disconnect the O6 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
   E19-7 (CA+) - O6-6 (CB+)	Always	Below 1 Ω
   E19-8 (V+) - O6-3 (CV+)	Always	Below 1 Ω
   E19-16 (V-) - O6-2 (CV-)	Always	Below 1 Ω
   E19-15 (CGND) - O6-5 (CGND)	Always	Below 1 Ω
   E19-7 (CA+) - Body ground	Always	10 kΩ or higher
   E19-8 (V+) - Body ground	Always	10 kΩ or higher
   E19-16 (V-) - Body ground	Always	10 kΩ or higher
   E19-15 (CGND) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Reconnect the E19 navigation ECU sub-assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E19-16 (V-) - Body ground	Always	Below 1 Ω
   E19-15 (CGND) - 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
   E19-7 (CA+) - E19-15 (CGND)	Engine switch on (IG) Shift lever in R	5.5 to 7.05 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Navigation ECU Sub-assembly)

NG → See step   4 

OK: Go to next step 

1. Reconnect the O6 rear television camera assembly connector.
2. Using an oscilloscope, check the waveform of the rear television camera assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Navigation ECU Sub-assembly)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Navigation ECU Sub-assembly)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT: 

   A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the navigation ECU sub-assembly with the connector connected.

   OK

   Waveform is similar to that shown in the illustration.

   Item	Content
   Terminal No. (Symbol)	E19-8 (V+) - E17-7 (GND1)
   Tool Setting	200 mV/DIV., 50 μsec./DIV.
   Condition	Engine 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 (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

NG → See step   5 

OK → See step   4