- Roof console box assembly
- Wire harness or connector
- DCM (Telematics Transceiver)
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VJC6 |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - ] |
| Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B1571; Manual (SOS) Switch Green Indicator Malfunction; 2016 - 2020 MY Sienna [12/2015 - ] | ||
|
DTC |
B1571 |
Manual (SOS) Switch Green Indicator Malfunction |
DESCRIPTION
This DTC is set when the DCM (Telematics Transceiver) detects an open or short in the manual (SOS) switch green indicator circuit of the manual (SOS) switch. The manual (SOS) switch green indicator illuminates after the ignition switch is turned ON.
If the Safety Connect System is not active, the manual (SOS) switch green indicator will turn off.
If the Safety Connect System is active, the manual (SOS) switch green indicator will blink while communicating with the call center.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
B1571 |
Current for manual (SOS) switch green indicator reaches malfunction criteria for 10 seconds when ignition switch is ON. |
|
WIRING DIAGRAM
PROCEDURE
|
1. |
CHECK DTC |
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON and wait for 10 seconds.
(d) Turn the Techstream on.
(e) Perform "HEALTH CHECK" and check for current DTCs (See page
![2016 - 2017 MY Sienna [12/2015 - 11/2017]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: HEALTH CHECK](/t3Portal/stylegraphics/info.gif)
).
Result
|
Result |
Proceed to |
|---|---|
|
DTC B1570, B1571 and B15C5 are output |
A |
|
DTC B1571 is output (DTC B1570 and B15C5 are not output) |
B |
| B |
|
|
|
2. |
INSPECT ROOF CONSOLE BOX ASSEMBLY (GREEN INDICATOR) |
|
(a) Disconnect the T4 roof console box assembly connector. |
|
(b) Connect 2 dry-cell batteries (1.5 V each) in series.
(c) Connect the positive (+) lead to terminal T4-17 (IND2) and the negative (-) lead to terminal T4-13 (SIG2) of the roof console box assembly connectors.
(d) Check if the illumination for the manual (SOS) switch green indicator comes on.
OK:
Green indicator comes on.
Text in Illustration
|
*1 |
Component without harness connected (Roof Console Box Assembly) |
| NG |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (DCM - ROOF CONSOLE BOX) |
|
(a) Remove the D73 DCM (Telematics Transceiver) connector. |
|
(b) Remove the T4 roof console box assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D73-26 (SIG-) - T4-13 (SIG2) |
Always |
Below 1 Ω |
|
D73-26 (SIG-) - Body ground |
Always |
10 kΩ or higher |
Text in Illustration
|
*1 |
Front view of wire harness connector (to DCM (Telematics Transceiver)) |
|
*2 |
Front view of wire harness connector (to Roof Console Box Assembly) |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
REPLACE DCM (TELEMATICS TRANSCEIVER) |
(a) Replace the DCM (Telematics Transceiver (See page
).
NOTICE:
- The ignition switch must be off.
- Do not swap the DCM (Telematics Transceiver) with one from another vehicle.
| NEXT |
|
PERFORM DCM ACTIVATION (See page
|
|
5. |
INSPECT ROOF CONSOLE BOX ASSEMBLY (MANUAL (SOS) SWITCH GREEN INDICATOR CONDITION) |
(a) Confirm the green indicator status after the ignition switch to ON (See page
).
Result
|
Result |
Proceed to |
|---|---|
|
Green indicator remains off. |
A |
|
Green indicator remains on. |
B |
| B |
|
|
|
6. |
INSPECT ROOF CONSOLE BOX ASSEMBLY (GREEN INDICATOR INPUT VOLTAGE) |
|
(a) Remove the roof console box assembly but do not disconnect the connectors (See page
|
|
(b) Connect the positive lead of a voltmeter to terminal T4-17 (IND2), and the negative lead to terminal T4-13 (SIG2).
(c) Measure the voltage.
Standard:
After ignition switch to ON and red indicator has subsequently turned off, 1.0 to 8.5 V in 2 seconds.
0 V when the ignition switch is off.
Text in Illustration
|
*1 |
Component with harness connected (Roof Console Box Assembly) |
| OK |
|
|
|
7. |
INSPECT DCM (TELEMATICS TRANSCEIVER) (GREEN INDICATOR OUTPUT VOLTAGE) |
|
(a) Remove the DCM (Telematics Transceiver) but do not disconnect the connectors (See page
|
|
(b) Connect the positive lead of a voltmeter to terminal D73-12 (IND2), and the negative lead to body ground.
(c) Measure the voltage.
Standard:
After ignition switch to ON and red indicator has subsequently turned off, 1.0 to 8.5 V in 2 seconds.
0 V when the ignition switch is off.
Text in Illustration
|
*1 |
Component with harness connected (DCM (Telematics Transceiver)) |
| OK |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
8. |
CHECK HARNESS AND CONNECTOR (DCM - BODY GROUND) |
|
(a) Remove the DCM (Telematics Transceiver) but do not disconnect the connectors (See page
|
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D73-12 (IND2) - Body ground |
Always |
10 kΩ or higher |
Text in Illustration
|
*1 |
Component with harness connected (DCM (Telematics Transceiver)) |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
9. |
REPLACE DCM (TELEMATICS TRANSCEIVER) |
(a) Replace the DCM (Telematics Transceiver) (See page
).
NOTICE:
- The ignition switch must be off.
- Do not swap the DCM (Telematics Transceiver) with one from another vehicle.
| NEXT |
|
PERFORM DCM ACTIVATION (See page
|
|
|