- Wire harness or connector
- BUB (Back-Up Battery)
- DCM (Telematics Transceiver)
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VJC3 |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - 11/2017] |
| Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B15CC; Backup Battery Failure; 2016 - 2017 MY Sienna [12/2015 - 11/2017] | ||
|
DTC |
B15CC |
Backup Battery Failure |
DESCRIPTION
This DTC is set when the DCM (Telematics Transceiver) detects one of the following:
- Open or short in the BUB (Back-Up Battery) circuit.
- The BUB (Back-Up Battery) voltage drops or the BUB (Back-Up Battery) malfunctions.
- The BUB (Back-Up Battery) temperature is (temporarily) high.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
B15CC |
BUB (Back-Up Battery) malfunction |
|
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 B15CC is output |
A |
|
DTC B15CC is not output |
B |
| B |
|
CHECK FOR INTERMITTENT PROBLEMS (See page
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (DCM - BUB) |
|
(a) Disconnect the D73 DCM (Telematics Transceiver) connector. |
|
(b) Disconnect the D76 BUB (Back-Up Battery) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D73-30 (BBI+) - D76-1 (BBO+) |
Always |
Below 1 Ω |
|
D73-13 (BBI-) - D76-5 (BBO-) |
Always |
Below 1 Ω |
|
D73-20 (CTR1) - D76-3 (BTR1) |
Always |
Below 1 Ω |
|
D73-21 (CTR2) - D76-4 (BTR2) |
Always |
Below 1 Ω |
|
D73-30 (BBI+) - Body ground |
Always |
10 kΩ or higher |
|
D73-13 (BBI-) - Body ground |
Always |
10 kΩ or higher |
|
D73-20 (CTR1) - Body ground |
Always |
10 kΩ or higher |
|
D73-21 (CTR2) - 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 BUB (Back-Up Battery)) |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
REPLACE BUB (BACK-UP BATTERY) |
(a) Replace the BUB (Back-Up Battery) with a normal one and check if the same problem occurs again (See page
).
NOTICE:
The BUB (Back-Up Battery) must not be replaced while an ACN call is in progress (See page
).
|
|
4. |
CLEAR DTC |
(a) Clear the DTC (See page
).
|
|
5. |
RECHECK DTC |
(a) Recheck for DTCs and check if the same trouble occurs again (See page
).
OK:
No DTC is output.
| OK |
|
END |
|
|
6. |
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 |
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