TERMINALS OF ECU
1. REAR TELEVISION CAMERA ASSEMBLY
(a) Disconnect the R21 rear television camera assembly connector.
(b) Measure the voltage on the wire harness side connector according to the value(s) in the table below.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
R21-6 (CB+) - Body ground |
B - Body ground |
Power source |
Ignition switch ACC |
5.5 to 7.05 V |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the R21 rear television camera assembly connector.
(d) Measure the voltage and check for pulses at each terminal of the connector.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
R21-3 (CV+) - R21-2 (CV-) |
R - W |
Video signal |
Ignition switch ON Shift lever in R Camera lens not covered, displaying an image |
Pulse generation (Refer to waveform 1) |
Ignition switch ON Shift lever in R Camera lens covered, blacking out screen |
Pulse generation (Refer to waveform 2) |
|||
R21-5 (CGND) - Body ground |
W-B - Body ground |
Shield ground |
Always |
Below 1 V |
HINT:
A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the navigation receiver assembly*1 or radio and display receiver assembly*2 with the connector connected.
If the result is not as specified, the rear television camera assembly may be malfunctioning.
(e) Reference (Oscilloscope waveform):
HINT:
A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the navigation receiver assembly*1 or radio and display receiver assembly*2 with the connector connected.
(1) Waveform 1 (camera lens is not covered, displaying an image)
Item |
Content |
---|---|
Measurement terminal |
R21-3 (CV+) - R21-2 (CV-) |
Measurement setting |
200 mV/DIV., 50 μs./DIV. |
Condition |
Ignition switch ON, shift lever in R |
HINT:
(2) Waveform 2 (camera lens is covered, blacking out the screen)
Item |
Content |
---|---|
Measurement terminal |
R21-3 (CV+) - R21-2 (CV-) |
Measurement setting |
200 mV/DIV., 50 μs./DIV. |
Condition |
Ignition switch ON, shift lever in R |
HINT:
*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 |
2. NAVIGATION RECEIVER ASSEMBLY (for Navigation System) (See page )
3. RADIO AND DISPLAY RECEIVER ASSEMBLY (for Audio and Visual System) (See page )
Diagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
(a) The power back door ECU (power back door motor unit)*1 or back door closer
ECU (multiplex network door ECU)*2 controls the vehicle's back door closer system
functions. Back door closer system data and Diagnostic Tr ...
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" ...
Voice is not Recognized
PROCEDURE
1.
CHECK CONDITION
(a) Check if the system voice recognition level is low when recognizing a particular
voice.
Result
Proceed to
System voice recognition level is low only fo ...