Toyota Tacoma manuals

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

Toyota Tacoma (2015-2018) Service Manual / Navigation / Multi Info Display / Navigation System / Data Signal Circuit between Navigation Receiver Assembly and Extension Module

DESCRIPTION

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

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

NOTICE:

After replacing the stereo component tuner assembly of vehicles subscribed to pay-type satellite radio broadcasts, XM radio ID registration is necessary.

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - STEREO COMPONENT TUNER ASSEMBLY)

(a) Disconnect the N19, N27 and N28 navigation receiver assembly connectors.

(b) Disconnect the S52, S53 and S54 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

N27-1 (USV4) - S53-1 (USV4)

Always

Below 1 Ω

N27-2 (US4-) - S53-2 (US4-)

Always

Below 1 Ω

N27-3 (US4+) - S53-3 (US4+)

Always

Below 1 Ω

N27-4 (UGO4) - S53-4 (UGO4)

Always

Below 1 Ω

N27-5 (USG4) - S53-5 (USG4)

Always

Below 1 Ω

N19-4 (+B2) - S52-4 (+B2)

Always

Below 1 Ω

N19-3 (ACC2) - S52-3 (ACC2)

Always

Below 1 Ω

N19-8 (GND2) - S52-8 (GND2)

Always

Below 1 Ω

N28-1 (LVDS) - S54-1 (LVDS)

Always

Below 1 Ω

N27-1 (USV4) - Body ground

Always

10 kΩ or higher

N27-2 (US4-) - Body ground

Always

10 kΩ or higher

N27-3 (US4+) - Body ground

Always

10 kΩ or higher

N27-4 (UGO4) - Body ground

Always

10 kΩ or higher

N27-5 (USG4) - Body ground

Always

10 kΩ or higher

N19-4 (+B2) - Body ground

Always

10 kΩ or higher

N19-3 (ACC2) - Body ground

Always

10 kΩ or higher

N19-8 (GND2) - Body ground

Always

10 kΩ or higher

N28-1 (LVDS) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2.

CHECK NO. 1 NAVIGATION WIRE

(a) Replace the No. 1 navigation wire with a known good one (See page (b) Check that the malfunction disappears. ).

(b) Check that the malfunction disappears.

OK:

Malfunction disappears.

OK

END (NO. 1 NAVIGATION WIRE WAS DEFECTIVE)

NG

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

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