Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter
DESCRIPTION
The No. 1 stereo jack adapter assembly sends the sound signal from an external device to the radio receiver assembly via this circuit.
The sound signal that has been sent is amplified by the stereo component amplifier assembly and then is sent to the speakers. If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly, radio receiver assembly or speakers.
WIRING DIAGRAM
PROCEDURE
| 1. | CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY) |
(a) Disconnect the J148 radio receiver assembly connector.
(b) Disconnect the J152 No. 1 stereo jack adapter assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| J148-14 (ADPG) - J152-2 (ADPG) | Always | Below 1 Ω |
| J148-10 (AGND) - J152-7 (AGND) | Always | Below 1 Ω |
| J148-12 (VAR+) - J152-6 (VAR+) | Always | Below 1 Ω |
| J148-11 (VAL+) - J152-1 (VAL+) | Always | Below 1 Ω |
| J148-13 (VA-) - J152-5 (VA-) | Always | Below 1 Ω |
| J148-14 (ADPG) or J152-2 (ADPG) - Body ground | Always | 10 kΩ or higher |
| J148-10 (AGND) or J152-7 (AGND) - Body ground | Always | 10 kΩ or higher |
| J148-12 (VAR+) or J152-6 (VAR+) - Body ground | Always | 10 kΩ or higher |
| J148-11 (VAL+) or J152-1 (VAL+) - Body ground | Always | 10 kΩ or higher |
| J148-13 (VA-) or J152-5 (VA-) - Body ground | Always | 10 kΩ or higher |
| OK |  | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Illumination Circuit
DESCRIPTION Power is supplied to the radio receiver assembly and steering pad switch assembly illumination when the light control switch is in the tail or head position. WIRING DIAGRAM CAUTION / NOTI ...
Speaker Circuit
DESCRIPTION If there is a short in a speaker circuit, the stereo component amplifier assembly detects it and stops output to the speakers. Thus sound cannot be heard from the speakers even if there is ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Front Camera System: Buzzer Circuit Short to Ground or Open (C1A4A14)
DESCRIPTION If the forward recognition camera detects an open or short to ground in the buzzer circuit, it will store DTC C1A4A14. DTC No. Detection Item DTC Detection Condition Trouble Area C1A4A14 Buzzer Circuit Short to Ground or Open The forward recognition camera detects an ope ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Can Communication System: Check Bus 3 Line for Short to GND
DESCRIPTION There may be a short circuit between one of the CAN bus lines and GND when there is no resistance between terminal 6 (CA3H) of the network gateway ECU and terminal 4 (CG) of the DLC3, or terminal 21 (CA3L) of the network gateway ECU and terminal 4 (CG) of the DLC3. Symptom Trouble A ...
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
0.0161