Lexus NX: Voice Guidance Circuit between Radio Receiver and Stereo Component Amplifier
DESCRIPTION
This circuit is used when the voice switch of the steering pad switch assembly is pushed.
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 (RADIO RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY) |
(a) Disconnect the I154 radio and display receiver assembly connector.
(b) Disconnect the P46 stereo component amplifier assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester connection | Condition | Specified condition |
|---|---|---|
| I154-3 (RL+) - P46-15 (II1+) | Always | Below 1 Ω |
| I154-8 (RL-) - P46-14 (II1-) | Always | Below 1 Ω |
| P46-18 (SLD1) - Body ground | Always | 10 kΩ or higher |
| I154-3 (RL+) or P46-15 (II1+) - Body ground | Always | 10 kΩ or higher |
| I154-8 (RL-) or P46-14 (II1-) - Body ground | Always | 10 kΩ or higher |
| OK | .gif) | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
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| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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Microphone Circuit
DESCRIPTION
The radio receiver assembly and telephone microphone assembly are connected to each other using the microphone connection detection signal lines.
Using this circuit, the DCM (telemati
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Radio Receiver Power Source Circuit
DESCRIPTION This is the power source circuit to operate the radio receiver assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
Inspect the fuses for circuits related to this system before per
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Parts Location
PARTS LOCATION ILLUSTRATION *1 AIRBAG ECU ASSEMBLY *2 PARKING BRAKE ECU ASSEMBLY *3 AIR CONDITIONING CONTROL ASSEMBLY *4 HYBRID VEHICLE CONTROL ECU *5 BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SKID CONTROL ECU) *6 ENGINE ROOM RELAY BLOCK
- METER NO.1 FUSE
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Repair
REPAIR PROCEDURE 1. REPAIR INTAKE VALVE SEAT NOTICE:
Repair the seat while checking the seating position.
Keep the lip free of foreign matter.
Take off the cutter gradually to make the intake valve seat smooth.
(a) Using a 45° cutter, resurface the valve seat so that the valve seat wid
