DESCRIPTION This DTC is
stored if the radio and display receiver assembly judges as a result of
its self check that the signals or signal lines between the radio and
display receiver assembly and the television camera assembly are not
normal. |
DTC Code | DTC Detection Condition |
Trouble Area | | C1622 |
Open or Short Circuit in television camera signal |
- Harness or connector
- Television camera assembly
- Radio and display receiver assembly
| WIRING DIAGRAM
 PROCEDURE
(a) Clear the DTCs (See page
 ). (b) Check for DTCs (See page
). Result |
Result | Proceed to | |
No DTC is output | A | |
DTC is output | B |
| A |
 | USE SIMULATION METHOD TO CHECK |
|
B |
 | |
| 2. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - TELEVISION CAMERA ASSEMBLY) |
(a) Disconnect the J140 radio and display receiver assembly connector.
(b) Disconnect the X1 television camera assembly connector. (c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
J140-11 (CA+) - X1-6 (CB+) |
Always | Below 1 Ω | |
J140-12 (V+) - X1-3 (CV+) |
Always | Below 1 Ω | |
J140-23 (CGND) - X1-5 (CGND) |
Always | Below 1 Ω | |
J140-24 (V-) - X1-2 (CV-) |
Always | Below 1 Ω | |
J140-11 (CA+) - Body ground |
Always | 10 kΩ or higher | |
J140-12 (V+) - Body ground |
Always | 10 kΩ or higher | |
J140-23 (CGND) - Body ground |
Always | 10 kΩ or higher | |
J140-24 (V-) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 3. |
CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY |
| (a) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
J140-23 (CGND) - Body ground |
Always | Below 1 Ω | |
J140-24 (V-) - Body ground |
Always | Below 1 Ω | Text in Illustration |
*a | Component with harness connected
(Radio and Display Receiver Assembly) | Result |
Result | Proceed to | |
OK | A | |
NG (for Column Shift Type) |
B | | NG (for Floor Shift Type) |
C | | |
| B |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
| C |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
|
A | |
| |
| 4. |
CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY |
| (a) Disconnect the television camera assembly connector. |
|
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage: |
Tester Connection | Switch Condition |
Specified Condition | |
X1-6 (CB+) - X1-5 (CGND) |
Ignition switch ACC | 5.5 to 7.05 V | Text in Illustration |
*a | Front view of wire harness connector
(to Television Camera Assembly) | Result |
Result | Proceed to | |
OK | A | |
NG (for Column Shift Type) |
B | | NG (for Floor Shift Type) |
C |
| B |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
| C |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
|
A | |
| |
| 5. |
CHECK TELEVISION CAMERA ASSEMBLY | (a) Using an oscilloscope, check the waveform.
 Text in Illustration |
*a | Component with harness connected
(Radio and Display Receiver Assembly) |
*b | Waveform 1 | |
*c | Waveform 2 |
*d | Synchronized Signal | |
*e | Video Waveform |
- | - | Measurement Condition |
Item | Content | |
Tester Connection | J140-12 (V+) - J140-24 (V-) | |
Tool Setting | 0.2 V/DIV., 50 μs/DIV. | |
Condition |
- Waveform 1: Ignition switch ON
- Waveform 2: Ignition switch ON, screen blacked out by covering camera lens
| OK: Waveform is as shown in illustration.
HINT: The video waveform changes according to the image sent by the television camera assembly.
| OK |
| USE SIMULATION METHOD TO CHECK |
|
NG | |
| |
| 6. |
REPLACE TELEVISION CAMERA ASSEMBLY | (a) Replace the television camera assembly with a new or normally functioning one (See page
).
|
NEXT | |
| |
(a) Clear the DTCs (See page
). (b) Check for DTCs (See page
). Result |
Result | Proceed to | |
No DTC is output | A | |
DTC is output (for Column Shift Type) |
B | | DTC is output (for Floor Shift Type) |
C |
| A |
| END (TELEVISION CAMERA ASSEMBLY WAS DEFECTIVE) |
| B |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
| C |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY | | 
