Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Radio Receiver Power Source Circuit

DESCRIPTION

This is the power source circuit to operate the navigation receiver assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - BATTERY AND BODY GROUND)

(a) Disconnect the N24 and N25 navigation receiver assembly connectors.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

N24-7 (GND1) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

N24-4 (+B1) - N24-7 (GND1)

Always

11 to 14 V

N24-3 (ACC1) - N24-7 (GND1)

Ignition switch ACC

11 to 14 V

N25-1 (IG) - N24-7 (GND1)

Ignition switch ON

11 to 14 V

Text in Illustration

*a

Front view of wire harness connector

(to Navigation Receiver Assembly)

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

Microphone Circuit between Microphone and Radio Receiver
DESCRIPTION The navigation receiver assembly and telephone microphone assembly are connected to each other using the microphone connection detection signal lines. Using this circuit, the navigatio ...

Stereo Component Amplifier Power Source Circuit
DESCRIPTION This circuit provides power to the stereo component amplifier assembly. WIRING DIAGRAM CAUTION / NOTICE / HINT Inspect the fuses for circuits related to this system before performing ...

Other materials:

Removal
REMOVAL PROCEDURE 1. REMOVE REAR SEATBACK HINGE COVER 2. REMOVE REAR SEATBACK ASSEMBLY 3. REMOVE REAR SEATBACK HINGE SUB-ASSEMBLY 4. REMOVE REAR DOOR SCUFF PLATE 5. DISCONNECT REAR DOOR OPENING TRIM WEATHERSTRIP (a) Disconnect the rear door opening trim weatherstrip to ...

Inspection
INSPECTION PROCEDURE 1. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY (a) When there is a malfunction such as noise from a speaker or no sound at all, replace the speaker with a new one and check that the malfunction disappears. OK: Malfunction disappears. HINT: Connect the connectors to th ...

Engine Immobiliser System Circuit Short to Battery (B279A12)
DESCRIPTION When the communication line (IMI - EFIO) between the ECM and certification ECU (smart key ECU assembly) is stuck high, the ECM stores this DTC. DTC Code DTC Detection Condition Trouble Area DTC Output Confirmation Operation ...

© 2011-2018 Copyright www.ttguide.net