DESCRIPTION
This DTC is stored if the radio and display receiver assembly judges that the signals or signal lines between the radio and display receiver assembly and the rear television camera assembly are not normal as a result of its self check.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
---|---|---|---|
C1622 |
Back Camera Disconnected |
Open or short in the rear television camera assembly signal circuit |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR TELEVISION CAMERA ASSEMBLY) |
(a) Disconnect the F131 radio and display receiver assembly connector.
(b) Disconnect the S11 rear television camera assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F131-30 (CA+) - S11-6 (CB+) |
Always |
Below 1 Ω |
F131-28 (V+) - S11-3 (CV+) |
Always |
Below 1 Ω |
F131-29 (V-) - S11-2 (CV-) |
Always |
Below 1 Ω |
F131-27 (CGND) - S11-5 (CGND) |
Always |
Below 1 Ω |
F131-26 (CSLD) - Body ground |
Always |
Below 1 Ω |
F131-30 (CA+) or S11-6 (CB+) - Body ground |
Always |
10 kΩ or higher |
F131-28 (V+) or S11-3 (CV+) - Body ground |
Always |
10 kΩ or higher |
F131-29 (V-) or S11-2 (CV-) - Body ground |
Always |
10 kΩ or higher |
F131-27 (CGND) or S11-5 (CGND) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. |
INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY |
(a) Reconnect the radio and display receiver assembly connector.
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
F131-30 (CA+) - F131-27 (CGND) |
Ignition switch ACC |
5.5 to 7.05 V |
NG | ![]() |
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
|
3. |
INSPECT REAR TELEVISION CAMERA ASSEMBLY |
(a) Reconnect the S11 rear television camera assembly connector.
(b) 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 |
F131-28 (V+) - F129-1 (GND1) |
Measurement setting |
200 mV/DIV., 50 μs./DIV. |
Condition |
Ignition switch ON, shift lever in R |
HINT:
*a |
Component with harness connected (Radio and Display Receiver Assembly) |
*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 |
OK | ![]() |
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
NG | ![]() |
REPLACE REAR TELEVISION CAMERA ASSEMBLY |
Toyota CH-R Service Manual > Navigation System: Voice Guidance does not Function
WIRING DIAGRAM
PROCEDURE
1.
CHECK VOICE GUIDANCE SETTING
(a) Check that the voice guidance setting is not off.
OK:
Voice guidance setting is not off.
NG
CHANGE VOICE GUIDANCE SETTING TO ON
OK
...
Toyota CH-R Service Manual > Navigation System: Speaker Circuit
DESCRIPTION
Thus sound cannot be heard from the speakers even if there is no malfunction
in the DCM (telematics transceiver) or speakers.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Depending on the parts that are replaced during vehicle inspection or
maintenance, performing ...