Toyota CH-R Service Manual: Dcm Power Source Circuit

Toyota CH-R Service Manual / 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 procedure.

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - BATTERY AND GROUND)

(a) Disconnect the F134 DCM (Telematics Transceiver) connector.

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

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
F134-4 (E) - Body ground	Always	Below 1 Ω

Standard Voltage:

Tester Connection	Condition	Specified Condition
F134-1 (+B) - F134-4 (E)	Always	11 to 14 V
F134-7 (IG2) - F134-4 (E)	Ignition switch ON	11 to 14 V
F134-8 (ACC) - F134-4 (E)	Ignition switch ACC	11 to 14 V

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

Manual (SOS) Switch Red Indicator Malfunction (B1570)

DESCRIPTION This DTC is stored when the DCM (Telematics Transceiver) detects an open or short in the manual (SOS) switch red indicator circuit of the manual (SOS) switch. The manual (SOS) switch r ...

Green And Red Indicators Do Not Come On When Ig-on

DESCRIPTION If the red and green indicators fail to illuminate after the ignition switch turned to ON, the vehicle does not recognize the DCM (Telematics Transceiver). The DCM (Telematics Transce ...

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