- DCM (Telematics Transceiver)
- Telephone and GPS antenna assembly
- Wire harness or connector (Telephone and GPS antenna cord)
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VJC8 |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - 11/2017] |
| Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B1573,B15CB; Short in Telephone Antenna Circuit; 2016 - 2017 MY Sienna [12/2015 - 11/2017] | ||
|
DTC |
B1573 |
Short in Telephone Antenna Circuit |
|
DTC |
B15CB |
Telematics Transceiver Antenna Disconnected |
DESCRIPTION
This DTC is set when the DCM (Telematics Transceiver) detects an open or a short in the telephone and GPS antenna assembly circuit. The DCM (Telematics Transceiver) oscillates and receives 824 - 894 MHz or 1850 - 1990 MHz radio-frequency through the telephone and GPS antenna assembly.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
B1573 |
Telephone and GPS antenna assembly impedance is lower than malfunction criterion for 10 seconds when ignition switch is ON. (Short circuit) |
|
|
B15CB |
Telephone and GPS antenna assembly impedance is higher than malfunction criterion for 10 seconds when ignition switch is ON. (Open circuit) |
|
HINT:
Refer to "PARTS LOCATION" for the installation location of telephone and GPS antenna cord (See page
![2016 - 2017 MY Sienna [12/2015 - 11/2017]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: PARTS LOCATION](/t3Portal/stylegraphics/info.gif)
).
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) Perform "HEALTH CHECK" and check for current DTCs (See page
).
Result
|
Result |
Proceed to |
|---|---|
|
DTC B1573 or B15CB is output |
A |
|
DTC B1573 or B15CB is not output |
B |
| B |
|
CHECK FOR INTERMITTENT PROBLEMS (See page
|
|
|
2. |
INSPECT TELEPHONE AND GPS ANTENNA ASSEMBLY (DCM - TELEPHONE AND GPS ANTENNA) |
|
(a) Disconnect the A telephone and GPS antenna cord (Antenna Cord Sub-assembly) connector from the DCM (Telematics Transceiver). |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A-1 - A-1a |
Always |
4 to 11 kΩ |
Text in Illustration
|
*1 |
Front view of telephone and GPS antenna cord (Antenna cord sub-assembly) connector (to DCM (Telematics Transceiver)) Connector color: Blue |
| NG |
|
|
|
3. |
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 |
|
|
4. |
INSPECT TELEPHONE AND GPS ANTENNA ASSEMBLY |
|
(a) Disconnect the D telephone and GPS antenna assembly connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D-3 - D-3a |
Always |
4 to 11 kΩ |
Text in Illustration
|
*1 |
Telephone and GPS Antenna Assembly Connector color: Blue |
| NG |
|
|
|
5. |
INSPECT TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY) |
|
(a) Disconnect the A DCM (Telematics Transceiver) connector. |
|
(b) Disconnect the C telephone and GPS antenna cord (Vehicle's wire harness) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A-1 - C-3 |
Always |
Below 1 Ω |
|
A-1a - C-3a |
Always |
Below 1 Ω |
|
A-1 - Body ground |
Always |
10 kΩ or higher |
|
A-1a - Body ground |
Always |
10 kΩ or higher |
Text in Illustration
|
*1 |
Telephone and GPS Antenna Cord (Antenna Cord Sub-Assembly) |
|
*2 |
Telephone and GPS Antenna Cord (Vehicle's Wire Harness) |
|
*a |
A Connector Color: Blue |
|
*b |
C Connector Color: Blue |
| OK |
|
REPLACE TELEPHONE AND GPS ANTENNA CORD (VEHICLE'S WIRE HARNESS) |
| NG |
|
REPLACE TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY) |
|
|