DTC C1622: Back Camera Disconnected [11/2018 - 10/2022]: Procedure

1. Choose the model to be inspected.

   Result

   Result	Proceed to
   w/ Parking Assist Monitor System	A
   w/ Panoramic View Monitor System	B

Result: 

B 

See step  5

Result: 

A 

See step  2

1. Disconnect the R15 television camera assembly connector.
2. Disconnect the G2 radio and display receiver assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   R15-6 (CB+) - G2-30 (CA+)	Always	Below 1 Ω
   R15-3 (CV+) - G2-28 (V+)	Always	Below 1 Ω
   R15-2 (CV-) - G2-29 (V-)	Always	Below 1 Ω
   R15-5 (CGND) - G2-27 (CGND)	Always	Below 1 Ω
   R15-6 (CB+) or G2-30 (CA+) - Body ground	Always	10 kΩ or higher
   R15-3 (CV+) or G2-28 (V+) - Body ground	Always	10 kΩ or higher
   R15-2 (CV-) or G2-29 (V-) - Body ground	Always	10 kΩ or higher
   R15-5 (CGND) or G2-27 (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  3

1. Remove the radio and display receiver assembly with the connector still connected.

   Refer to REMOVAL [11/2018 - 10/2022]

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   G2-30 (CA+) - G2-27 (CGND)	Ignition switch ACC	5.5 to 7.05 V

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G2-27 (CGND) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  INSTALLATION [11/2018 - 10/2022] 

Result: 

OK 

See step  4

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the radio and display receiver assembly with the connector still connected.

   Refer to REMOVAL [11/2018 - 10/2022]

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

   Item	Content
   Measurement terminal	G2-28 (V+) - G2-29 (V-)
   Measurement setting	200 mV/DIV., 50 μsec./DIV.
   Condition	Waveform 1: Ignition switch ON, shift position in R, camera lens is not covered, displaying an image. Waveform 2: Ignition switch ON, shift position in R, camera lens is covered, blacking out the screen.

   HINT: 

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

   OK

   Waveform is as shown in the illustration.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [11/2018 - 10/2022] 

Result: 

NG 

REPLACE TELEVISION CAMERA ASSEMBLY. Refer to  REMOVAL [11/2018 - ] 

1. Clear the DTCs.

   for Gasoline Model: Refer to DTC CHECK / CLEAR [11/2018 - 10/2022]

   for HV Model: Refer to DTC CHECK / CLEAR [11/2018 - 10/2022]

   Chassis > Circumference Monitoring Camera Control Module > Clear DTCs 

2. Recheck for DTCs and check that no DTCs are output.

   for Gasoline Model: Refer to DTC CHECK / CLEAR [11/2018 - 10/2022]

   for HV Model: Refer to DTC CHECK / CLEAR [11/2018 - 10/2022]

   Chassis > Circumference Monitoring Camera Control Module > Trouble Codes 

   OK

   No DTCs are output.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO PANORAMIC VIEW MONITOR SYSTEM 

for Gasoline Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - 10/2022]

for HV Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - 10/2022]

Result: 

OK 

See step  6

1. Disconnect the N24 parking assist ECU connector.
2. Disconnect the G2 radio and display receiver assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   N24-7 (NS+) - G2-28 (V+)	Always	Below 1 Ω
   N24-24 (NS-) - G2-29 (V-)	Always	Below 1 Ω
   N24-7 (NS+) or G2-28 (V+) - Body ground	Always	10 kΩ or higher
   N24-24 (NS-) or G2-29 (V-) - Body ground	Always	10 kΩ or higher
   N24-8 (NSG) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  7

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the radio and display receiver assembly with the connector still connected.

   Refer to REMOVAL [11/2018 - 10/2022]

2. Check the waveform of the parking assist ECU using an oscilloscope.

   Item	Content
   Measurement terminal	G2-28 (V+) - G2-29 (V-)
   Measurement setting	200 mV/DIV., 50 μsec./DIV.
   Condition	Waveform 1: Ignition switch ON, shift position in R, camera lens is not covered, displaying an image. Waveform 2: Ignition switch ON, shift position in R, camera lens is covered, blacking out the screen.

   HINT: 

   • The video waveform changes according to the image sent by the parking assist ECU.
   • The video waveform is constantly output when the ignition switch is ACC.

   OK

   Waveform is similar to that shown in the illustration.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [11/2018 - 10/2022] 

Result: 

NG 

GO TO PANORAMIC VIEW MONITOR SYSTEM 

for Gasoline Model: Refer to PROBLEM SYMPTOMS TABLE [11/2018 - 10/2022]

for HV Model: Refer to PROBLEM SYMPTOMS TABLE [11/2018 - 10/2022]