Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001PY59
Model Year Start: 2021 Model: Avalon HV Prod Date Range: [08/2020 -           ]
Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: Emergency Call Switch Illumination Circuit; 2021 - 2022 MY Avalon Avalon HV [08/2020 -        ]

Emergency Call Switch Illumination Circuit

WIRING DIAGRAM

w/ Sliding Roof
w/o Sliding Roof

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 2021 MY Avalon Avalon HV [08/2020 - 08/2021]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: PRECAUTION 2022 MY Avalon Avalon HV [08/2021 -        ]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: PRECAUTION

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

PROCEDURE

1.

CONFIRM MODEL

(a) Choose the model to be inspected.

Result

Proceed to

w/ Sliding Roof

A

w/o Sliding Roof

B

B

GO TO STEP 4

A

2.

CHECK HARNESS AND CONNECTOR (ROOF CONSOLE BOX SUB-ASSEMBLY (MANUAL (SOS) SWITCH) POWER SOURCE)

(a) Disconnect the G124 DCM (telematics transceiver) connector.

(b) Disconnect the O10 roof console box sub-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

O10-13 (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

G124-3 (SIG-) - O10-16 (GND3)

Always

Below 1 Ω

G124-3 (SIG-) or O10-16 (GND3) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY (MANUAL (SOS) SWITCH)

(a) Remove the roof console box sub-assembly (manual (SOS) switch).

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): PERSONAL LIGHT: REMOVAL

*a

Component without harness connected

(Roof Console Box Sub-assembly (Manual (SOS) Switch))

(b) Apply auxiliary battery voltage to the connector and check that the roof console box assembly comes on.

OK:

Measurement Condition

Condition

Specified Condition

Auxiliary battery positive (+) → O10-13 (RRID)

Auxiliary battery negative (-) → O10-16 (GND3)

Always

Manual (SOS) switch illumination illuminates

OK

GO TO STEP 6

NG

REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY (MANUAL (SOS) SWITCH)

4.

CHECK HARNESS AND CONNECTOR (ROOF CONSOLE BOX SUB-ASSEMBLY (MANUAL (SOS) SWITCH) POWER SOURCE)

(a) Disconnect the G124 DCM (telematics transceiver) connector.

(b) Disconnect the O9 roof console box sub-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

O9-9 (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

G124-3 (SIG-) - O9-12 (GND3)

Always

Below 1 Ω

G124-3 (SIG-) or O9-12 (GND3) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

5.

INSPECT ROOF CONSOLE BOX SUB-ASSEMBLY (MANUAL (SOS) SWITCH)

(a) Remove the roof console box sub-assembly (manual (SOS) switch).

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; LIGHTING (INT): PERSONAL LIGHT: REMOVAL

*a

Component without harness connected

(Roof Console Box Sub-assembly (Manual (SOS) Switch))

(b) Apply auxiliary battery voltage to the connector and check that the roof console box assembly comes on.

OK:

Measurement Condition

Condition

Specified Condition

Auxiliary battery positive (+) → O9-9 (RRID)

Auxiliary battery negative (-) → O9-13 (GND3)

Always

Manual (SOS) switch illumination illuminates

NG

REPLACE ROOF CONSOLE BOX SUB-ASSEMBLY (MANUAL (SOS) SWITCH)

OK

6.

REPLACE DCM (TELEMATICS TRANSCEIVER)

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

Click here 2021 - 2022 MY Avalon Avalon HV [08/2020 -        ]; CELLULAR COMMUNICATION: DCM(TELEMATICS TRANSCEIVER): REMOVAL

NOTICE:

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

PERFORM DCM ACTIVATION