Toyota 4Runner manuals

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.

(c) Measure the resistance according to the value(s) in the table below.

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


NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

2.

REPLACE NO. 1 NAVIGATION WIRE

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


(b) Check that the malfunction disappears.

OK:

Malfunction disappears.


OK

END (NO. 1 NAVIGATION WIRE IS DEFECTIVE)


NG

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:

Removal
REMOVAL PROCEDURE 1. REMOVE JACK BOX HOLE COVER 2. REMOVE REAR QUARTER PANEL MUDGUARD LH 3. REMOVE REAR QUARTER PANEL MUDGUARD RH HINT: Use the same procedure as for the LH side. 4. REMOVE REAR BUMPER COVER (a) Remove the 2 bolts and 2 screws. ...

Back-up Power Source Circuit
DESCRIPTION The back-up power source circuit for the air conditioning amplifier assembly is shown below. Power is supplied even after the ignition switch is turned off and is used for diagnostic trouble code memory, etc. WIRING DIAGRAM CAUTION / NOTIC ...

© 2016-2025 | www.to4runner.net

0.0075