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

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