Toyota 4Runner: Data Signal Circuit between Radio Receiver and Extension Module

Toyota 4Runner Service Manual / Audio / Visual / Telematics / Audio / Video / Audio And Visual System / Data Signal Circuit between Radio Receiver and Extension Module

DESCRIPTION

The stereo component tuner assembly sends the sound data signal or image data signal from a device to the radio and display receiver assembly via this circuit.

WIRING DIAGRAM

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - STEREO COMPONENT TUNER ASSEMBLY)

(a) Disconnect the s5 and t3 radio and display receiver assembly connectors.

(b) Disconnect the s2 and t2 stereo component tuner assembly connectors.

Standard Resistance:

Tester Connection	Condition	Specified Condition
s5-1 (USV4) - s2-1 (USV4)	Always	Below 1 Ω
s5-2 (US4-) - s2-2 (US4-)	Always	Below 1 Ω
s5-3 (US4+) - s2-3 (US4+)	Always	Below 1 Ω
s5-4 (UGD4) - s2-4 (UGD4)	Always	Below 1 Ω
s5-5 (USG4) - s2-5 (USG4)	Always	Below 1 Ω
t3-4 (+B2) - t2-4 (+B2)	Always	Below 1 Ω
t3-3 (ACC2) - t2-3 (ACC2)	Always	Below 1 Ω
t3-8 (GND2) - t2-8 (GND2)	Always	Below 1 Ω
s5-1 (USV4) - Body ground	Always	10 kΩ or higher
s5-2 (US4-) - Body ground	Always	10 kΩ or higher
s5-3 (US4+) - Body ground	Always	10 kΩ or higher
s5-4 (UGD4) - Body ground	Always	10 kΩ or higher
s5-5 (USG4) - Body ground	Always	10 kΩ or higher
t3-4 (+B2) - Body ground	Always	10 kΩ or higher
t3-3 (ACC2) - Body ground	Always	10 kΩ or higher
t3-8 (GND2) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS AND CONNECTOR

2.	REPLACE NO. 1 NAVIGATION WIRE

(a) Replace the No. 1 navigation wire (See page ).

(b) Check that the malfunction disappears.

OK:

Malfunction disappears.

END (NO. 1 NAVIGATION WIRE IS DEFECTIVE)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Data Signal Circuit between Radio Receiver and Stereo Jack Adapter

DESCRIPTION The No. 1 stereo jack adapter assembly sends the sound data signal or image data signal from a USB device to the radio and display receiver assembly via this circuit. WIRING DIAGRAM ...

Reverse Signal Circuit

DESCRIPTION The radio and display receiver assembly receives a reverse signal from the park/neutral position switch assembly. WIRING DIAGRAM PROCEDURE 1. CHECK HARNESS A ...

Other materials about Toyota 4Runner:

Back Door Power Window Position/Seal Characteristics Data is not Memorized (B2313)
DESCRIPTION The power window regulator motor is driven by operating the back door power window regulator switch. The power window regulator motor assembly has a motor and ECU. When the ECU determines that the power window regulator motor has not been initi ...

Installation
INSTALLATION PROCEDURE 1. INSTALL STEREO COMPONENT TUNER ASSEMBLY (a) Connect the 6 connectors to the radio and display receiver assembly or navigation receiver assembly and stereo component tuner assembly. HINT: Connect the connectors with white tape t ...