| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM1000000028I84 |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [11/2022 - ] |
| Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM (for Gasoline Model): Emergency Call Switch Illumination Circuit; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 - ] | ||
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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.
Click here
![2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2022 - ]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM (for Gasoline Model): PRECAUTION](/t3Portal/stylegraphics/info.gif)
- Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
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1. |
CHECK HARNESS AND CONNECTOR (MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH) POWER SOURCE) |
(a) Disconnect the I143 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 |
Engine switch on (IG) |
11 to 14 V |
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I143-3 (SIG-) - T6-8 (GND3) |
Always |
Below 1 Ω |
|
I143-3 (SIG-) or T6-8 (GND3) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
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2. |
INSPECT MAP LIGHT ASSEMBLY (MANUAL (SOS) SWITCH) |
|
(a) Remove the map light assembly (manual (SOS) switch). Click here
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(b) Apply battery voltage to the connector and check that the map light assembly comes on.
OK:
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Measurement Condition |
Condition |
Specified Condition |
|---|---|---|
|
Battery positive (+) → T6-14 (RRID) Battery negative (-) → T6-8 (GND3) |
Always |
Manual (SOS) switch illumination comes on |
| NG |
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3. |
REPLACE DCM (TELEMATICS TRANSCEIVER) |
(a) Replace the DCM (telematics transceiver) with a new one.
Click here
NOTICE:
- The engine switch must be off.
- Do not exchange the DCM (telematics transceiver) with one from another vehicle.
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