Toyota Camry (XV70): Start Up Signal Circuit between Radio Receiver Assembly and Navigation ECU
Toyota Camry Repair Manual XV70 (2018-2024) / Audio, Visual, Telematics / Navigation / Multi Info Display / Navigation System / Start Up Signal Circuit between Radio Receiver Assembly and Navigation ECU
DESCRIPTION
This circuit includes the navigation ECU and radio and display receiver assembly.
WIRING DIAGRAM
PROCEDURE
| 1. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - NAVIGATION ECU) |
(a) Disconnect the K1 radio and display receiver assembly connector.
(b) Disconnect the K17 navigation ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
K1-7 (SUP) - K17-21 (SUP) |
Always | Below 1 Ω |
|
K1-7 (SUP) or K17-21 (SUP) - Body ground |
Always | 10 kΩ or higher |
| OK | .gif) | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
.gif)
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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Voice Guidance Circuit between Radio Receiver and Stereo Component Amplifier
DESCRIPTION Using this circuit, the radio and display receiver assembly sends signals to the stereo component amplifier assembly. WIRING DIAGRAM
PROCEDURE
1.
CHECK HARNESS AND CONNECTOR
Microphone Circuit
DESCRIPTION
w/o Manual (SOS) Switch:
The radio and display receiver assembly, roof console box sub-assembly and telephone microphone assembly are connected to each other using the microphone co
Radio Receiver Power Source Circuit
DESCRIPTION This is the power source circuit to operate the radio and display receiver assembly. WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE: Inspect the fuses for circuits related to this syst
SEE MORE:
Vehicle Control History
VEHICLE CONTROL HISTORY DESCRIPTION
Vehicle Control History (RoB) is a function that captures and stores ECU data when triggered by specific vehicle behavior.
If the customer states that the engine stalled or will not start, it may be possible to diagnose the cause of the malfunction by ch
Removal
REMOVAL CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during spark plug removal/installation are shown below. Necessary Procedures After Parts Removed/Installed/R
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