Toyota 4Runner: Dcm Power Source Circuit

Toyota 4Runner Service Manual / Audio / Visual / Telematics / Cellular Communication / Safety Connect System / Dcm Power Source Circuit

DESCRIPTION

This is the power source circuit to operate the DCM (Telematics Transceiver).

WIRING DIAGRAM

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 (DCM - BATTERY AND BODY GROUND)

(a) Disconnect the F39 DCM (Telematics Transceiver) connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
F39-4 (E) - Body ground	Always	Below 1 Ω

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
F39-1 (+B) - F39-4 (E)	Always	11 to 14 V
F39-7 (IG2) - F39-4 (E)	Ignition switch ON	11 to 14 V
F39-8 (ACC) - F39-4 (E)	Ignition switch ACC	11 to 14 V

Text in Illustration

*a	Front view of wire harness connector (to DCM [Telematics Transceiver])

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

GPS Signal Unreceived (B1583)

DESCRIPTION If GPS satellite signals cannot be acquired for 24 consecutive kilometers (15 consecutive miles), this DTC is set. DTC Code DTC Detection Condition Tro ...

Green And Red Indicators Blink Simultaneously

DESCRIPTION After the ignition switch is turned to ON, the DCM (Telematics Transceiver) will enter a self check mode. The manual (SOS) switch red indicator will illuminate for 2 seconds and turn ...

Other materials about Toyota 4Runner:

Room Temperature Sensor
Components COMPONENTS ILLUSTRATION Removal REMOVAL PROCEDURE 1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See page ). 2. REMOVE NO ...

Data List / Active Test
DATA LIST / ACTIVE TEST 1. READ DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very usefu ...