Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual: Terminals Of Ecu
TERMINALS OF ECU
REAR TELEVISION CAMERA ASSEMBLY
(a) Disconnect the Z11 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 |
|---|---|---|---|---|
| Z11-6 (CB+) - Body ground | B - Body ground | Power source | Engine switch on (ACC) | 5.5 to 7.05 V |
(c) Reconnect the Z11 rear television camera assembly connector.
(d) Measure the resistance and waveform according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| Z11-2 (CV-) - Body ground | R - Shielded | Ground | Always | Below 1 Ω |
| Z11-3 (CV+) - Z11-2 (CV-) | W - R | Video signal | Engine switch on (IG) Shift lever in R Camera lens not covered, displaying image | Pulse generation (Refer to waveform 1) |
| Engine switch on (IG) Shift lever in R Camera lens covered, blacking out screen | Pulse generation (Refer to waveform 2) | |||
| Z11-5 (CGND) - Body ground | G - Body ground | Shield ground | Always | Below 1 Ω |
(e) Reference (Waveform):
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| *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 |
HINT:
A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the radio receiver assembly with the connector connected.
(1) Waveform 1
| Item | Content |
|---|---|
| Terminal No. (Symbol) | Z11-3 (CV+) - Z11-2 (CV-) |
| Tool Setting | 200 mV/DIV., 50 μs./DIV. |
| Condition | Engine switch on (IG), shift lever in R, camera lens is not covered, displaying an image |
HINT:
The video waveform changes according to the image sent by the rear television camera assembly.
(2) Waveform 2
| Item | Content |
|---|---|
| Terminal No. (Symbol) | Z11-3 (CV+) - Z11-2 (CV-) |
| Tool Setting | 200 mV/DIV., 50 μs./DIV. |
| Condition | Engine switch on (IG), shift lever in R, camera lens is covered, blacking out screen |
HINT:
The video waveform changes according to the image sent by the rear television camera assembly.
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE:
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Data List / Active Test
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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