Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM1000000018QYU |
Model Year Start: 2018 |
Model: Sienna |
Prod Date Range: [11/2017 -
] |
Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: B15DB; Telematics Transceiver Disconnected; 2018 - 2020 MY Sienna [11/2017 - ] |
DTC
|
B15DB
|
Telematics Transceiver Disconnected
|
DESCRIPTION
If the radio and display receiver assembly cannot detect the DCM (telematics transceiver) for a certain period of time (90 seconds) after the ignition switch is turned ON and the radio and display receiver assembly confirms that the information is missing by checking past DCM (telematics transceiver) recognition information (registered information), this DTC will be stored.
The telematics system uses USB communication between devices. If an open, short, short to +B or short to ground occurs in the USB circuit, communication is interrupted and the telematics system will not operate normally.
DTC Code
|
DTC Detection Condition
|
Trouble Area
|
B15DB
|
DCM (telematics transceiver) disconnected
|
-
Harness or connector
-
DCM (telematics transceiver)
-
DCM (telematics transceiver) power source circuit
-
Radio and display receiver assembly
-
Navigation ECU
|
HINT:
This DTC may be stored due to environmental reasons such as electrical noise or interference.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
When replacing the radio and display receiver assembly or navigation ECU, always replace it with a new one. If a radio and display receiver assembly or navigation ECU which was installed to another vehicle is used, the following may occur:
-
A communication malfunction DTC is stored.
-
The radio and display receiver assembly or navigation ECU may not operate normally.
-
Inspect the fuses for circuits related to this system before performing the following procedure.
-
Before replacing the DCM (telematics transceiver), refer to Registration.
Click here
PROCEDURE
(a) Clear the DTCs.
(b) Turn the ignition switch off.
(c) Turn the ignition switch ON and wait for 90 seconds.
(d) Recheck for DTCs and check that no DTCs are output.
OK:
No DTCs are output.
NG
|
|
|
2.
|
CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) POWER SOURCE)
|
(a) Disconnect the DCM (telematics transceiver) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
D73-4 (E) - Body ground
|
Always
|
Below 1 Ω
|
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
D73-1 (+B) - D73-4 (E)
|
Always
|
11 to 14 V
|
D73-8 (ACC) - D73-4 (E)
|
Ignition switch ACC
|
11 to 14 V
|
D73-7 (IG2) - D73-4 (E)
|
Ignition switch ON
|
11 to 14 V
|
|
|
*a
|
Front view of wire harness connector
(to DCM (Telematics Transceiver))
|
|
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
3.
|
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - DCM (TELEMATICS TRANSCEIVER))
|
(a) Disconnect the D197 radio and display receiver assembly connector.
(b) Disconnect the D190 DCM (telematics transceiver) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
D197-10 (USBV) - D190-5 (USBV)
|
Always
|
Below 1 Ω
|
D197-11 (USBG) - D190-3 (USBG)
|
Always
|
Below 1 Ω
|
D197-10 (USBV) or D190-5 (USBV) - Body ground
|
Always
|
10 kΩ or higher
|
D197-11 (USBG) or D190-3 (USBG) - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
4.
|
INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY
|
(a) Disconnect the radio and display receiver assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
D197-11 (USBG) - Body ground
|
Always
|
Below 1 Ω
|
|
|
*a
|
Component without harness connected
(Radio and Display Receiver Assembly)
|
|
|
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
D197-10 (USBV) - D197-11 (USBG)
|
Ignition switch ACC
|
4.75 to 5.25 V
|
OK
|
|
|
5.
|
CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - NAVIGATION ECU)
|
(a) Disconnect the D73 DCM (telematics transceiver) connector.
(b) Disconnect the D190 navigation ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
D190-2 (USB+) - V7-1 (USB+)
|
Always
|
Below 1 Ω
|
D190-1 (USB-) - V7-2 (USB-)
|
Always
|
Below 1 Ω
|
D190-6 (USBS) - V7-3 (USBS)
|
Always
|
Below 1 Ω
|
D190-2 (USB+) or V7-1 (USB+) - Body ground
|
Always
|
10 kΩ or higher
|
D190-1 (USB-) or V7-2 (USB-) - Body ground
|
Always
|
10 kΩ or higher
|
D190-6 (USBS) or V7-3 (USBS) - Body ground
|
Always
|
10 kΩ or higher
|
|
|
*a
|
Front view of wire harness connector
(to DCM (telematics transceiver))
|
*b
|
Front view of wire harness connector
(to Navigation ECU)
|
|
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
6.
|
CHECK DCM (TELEMATICS TRANSCEIVER)
|
(a) Replace the DCM (telematics transceiver) with a new one.
Click here
(b) Clear the DTCs.
(c) Turn the ignition switch off.
(d) Turn the ignition switch ON and wait for 90 seconds.
(e) Recheck for DTCs and check that no DTCs are output.
OK:
No DTCs are output.
OK |
|
END (DCM [TELEMATICS TRANSCEIVER] IS DEFECTIVE)
|
NG
|
|
|
(a) Replace the navigation ECU with a new one.
Click here
(b) Clear the DTCs.
(c) Turn the ignition switch off.
(d) Turn the ignition switch ON and wait for 90 seconds.
(e) Recheck for DTCs and check that no DTCs are output.
OK:
No DTCs are output.
OK |
|
END (NAVIGATION ECU IS DEFECTIVE)
|
|