Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Emergency Call Switch Illumination Circuit

Toyota Corolla Cross (2022-2025) Service Manual / Audio & Visual & Telematics / Cellular Communication / Safety Connect System / Emergency Call Switch Illumination Circuit

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Safety Connect System.

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  • Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (MAP LIGHT ASSEMBLY POWER SOURCE)

(a) Disconnect the I200 DCM (telematics transceiver) connector.

(b) Disconnect the T6 map light assembly (manual [SOS] switch) connector.

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

T6-14 (RRID) - Body Ground

Ignition switch ON

11 to 14 V

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I200-3 (SIG-) - T6-8 (GND3)

Always

Below 1 Ω

I200-3 (SIG-) or T6-8 (GND3) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

2.

INSPECT MAP LIGHT ASSEMBLY (MANUAL [SOS] SWITCH)

(a) Remove the map light assembly (manual [SOS] switch).

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*a

Component without harness connected

(Map Light Assembly (Manual [SOS] Switch))

(b) Apply auxiliary battery voltage to the connector.

Measurement Condition

Condition

Specified Condition

Auxiliary battery positive (+) → 14 (RRID)

Auxiliary battery negative (-) → 8 (GND3)

Always

Manual (SOS) switch illumination comes on

(c) Check if the manual (SOS) switch illumination comes on.

OK:

The manual (SOS) switch illumination comes on.

NG

REPLACE MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH)

OK

3.

REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver) with a new one.

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NOTICE:

  • The ignition switch must be off.
  • Do not exchange the DCM (telematics transceiver) with one from another vehicle.
NEXT

PERFORM DCM ACTIVATION

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