Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VJCA
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 - 11/2017]
Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: DCM POWER SOURCE CIRCUIT; 2016 - 2017 MY Sienna [12/2015 - 11/2017]

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 D73 DCM (Telematics Transceiver) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D73-4 (E) - 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

D73-1 (+B) - D73-4 (E)

Always

11 to 14 V

D73-7 (IG2) - D73-4 (E)

Ignition switch ON

11 to 14 V

D73-8 (ACC) - D73-4 (E)

Ignition switch ACC

11 to 14 V

Text in Illustration

*1

Front view of wire harness connector

(to DCM (Telematics Transceiver))

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR