Toyota 4Runner: Unable To Connect To Call Center

Toyota 4Runner Service Manual / Audio / Visual / Telematics / Cellular Communication / Safety Connect System / Unable To Connect To Call Center

DESCRIPTION

This may occur when the intensity of the telephone radio frequency was very weak, PRL updates are required or the Safety Connect system has a malfunction, and a DTC is stored.

PROCEDURE

1.	CHECK COMMUNICATION SERVICE CONDITION

(a) Move the vehicle.

(1) If the vehicle is outside the communication service area, move the vehicle to a communication service area, wait for a while and perform the operation again.

OK:

Same problem does not occur.

END

2.	CHECK FOR DTC

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(d) Perform "Health Check" and check for current DTCs (See page ).

Result

Result	Proceed to
DTC is not output	A
DTC is output	B

GO TO DIAGNOSTIC TROUBLE CODE CHART

3.	CHECK PRL UPDATE

(a) Check for PRL update (See page ).

(b) Check if the same problem occurs again.

OK:

Same problem does not occur.

END

4.	CHECK DCM OPERATION HISTORY

(a) Check "DCM Operation History" (See page ).

Result

Result	Proceed to
Signal strength is weak (0 or 1)	A
Communication indicates "Fail"	A
No problems with signal strength or communication	B

HINT:

If there was a communication problem in the past but the communications are working correctly now, the source of the problem may have been temporary radio interference, or the vehicle may have been outside the service area.

END

5.	REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (Telematics Transceiver) (See page ).

NOTICE:

The ignition switch must be off.
Do not replace the DCM (Telematics Transceiver) with one from another vehicle.

PERFORM DCM ACTIVATION

Red Indicator Remains On

DESCRIPTION This means that the DCM (Telematics Transceiver) detects a malfunction in the Safety Connect and stores a DTC. PROCEDURE 1. CHECK FOR DTC (a) Turn the ...

Telephone Antenna

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