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Toyota Tacoma (2015-2018) Service Manual / Audio / Video / Audio And Visual System / Data Signal Circuit between Radio Receiver and Extension Module

Toyota Tacoma (2015-2018) Service Manual: Data Signal Circuit between Radio Receiver and Extension Module

DESCRIPTION

The stereo component tuner assembly sends the image data signal to the radio and display receiver assembly via this circuit.

WIRING DIAGRAM

PROCEDURE

PROCEDURE

1.

CHECK NO. 1 NAVIGATION WIRE

(a) Disconnect the R33 radio and display receiver assembly connector.

(b) Disconnect the S53 stereo component tuner assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

S53-1 (USV4) - R33-1 (USV4)

Always

Below 1 Ω

S53-2 (US4-) - R33-2 (US4-)

Always

Below 1 Ω

S53-3 (US4+) - R33-3 (US4+)

Always

Below 1 Ω

S53-4 (UGO4) - R33-4 (UGO4)

Always

Below 1 Ω

S53-5 (USG4) - R33-5 (USG4)

Always

Below 1 Ω

S53-1 (USV4) - Body ground

Always

10 kΩ or higher

S53-2 (US4-) - Body ground

Always

10 kΩ or higher

S53-3 (US4+) - Body ground

Always

10 kΩ or higher

S53-4 (UGO4) - Body ground

Always

10 kΩ or higher

S53-5 (USG4) - Body ground

Always

10 kΩ or higher
Text in Illustration

*a

Front view of No. 1 navigation wire connector

(to Radio and Display Receiver Assembly)

*b

Front view of No. 1 navigation wire connector

(to Stereo Component Tuner Assembly)
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPLACE NO. 1 NAVIGATION WIRE

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