DESCRIPTION
This DTC is stored when the DCM (Telematics Transceiver) detects an open or a short in the telephone and GPS antenna circuit. The DCM (Telematics Transceiver) sends and receives signals at a radio frequency of between 824 and 894 MHz or 1850 and 1990 MHz through the telephone and GPS antenna.
DTC Code |
DTC Detection Condition |
Trouble Area |
---|---|---|
B1573 |
The telephone and GPS antenna impedance is lower than the malfunction criterion for 10 seconds when the ignition switch is ON. |
|
B15CB |
The telephone and GPS antenna impedance is lower than the malfunction criterion for 10 seconds when the ignition switch is ON. |
HINT:
Refer to "Parts Location" for the installation location of the telephone and
GPS antenna cord (See page ).
PROCEDURE
1. |
CHECK FOR 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 |
Proceed to |
---|---|
DTC B1573 or B15CB is output |
A |
DTC B1573 and B15CB is not output |
B |
B | ![]() |
CHECK FOR INTERMITTENT PROBLEMS |
|
2. |
INSPECT TELEPHONE AND GPS ANTENNA (DCM - TELEPHONE AND GPS ANTENNA) |
(a) Disconnect the telephone and GPS antenna connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
3 (TEL2) - 3a |
Always |
4 to 11 kΩ |
*a |
Telephone and GPS Antenna Assembly |
NG | ![]() |
REPLACE TELEPHONE AND GPS ANTENNA (TELEPHONE ANTENNA ASSEMBLY) |
|
3. |
INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 3 ANTENNA CORD SUB-ASSEMBLY) |
(a) Disconnect the No. 3 antenna cord sub-assembly from the telephone and GPS antenna assembly connector. |
|
(b) Disconnect the No. 3 antenna cord sub-assembly from the No. 2 antenna cord sub-assembly.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A-3 - B-3 |
Always |
Below 1 Ω |
A-3a - B-3a |
Always |
Below 1 Ω |
A-3 - Body ground |
Always |
10 kΩ or higher |
A-3a - Body ground |
Always |
10 kΩ or higher |
*a |
Telephone and GPS Antenna Assembly Side |
*b |
No. 2 Antenna Cord Sub-assembly Side |
NG | ![]() |
REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 3 ANTENNA CORD SUB-ASSEMBLY) |
|
4. |
INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 2 ANTENNA CORD SUB-ASSEMBLY) |
(a) Disconnect the No. 2 antenna cord sub-assembly from the No. 3 antenna cord sub-assembly. |
|
(b) Disconnect the No. 2 antenna cord sub-assembly from the No. 2 instrument panel wire.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
C-3 - D-3 |
Always |
Below 1 Ω |
C-3a - D-3a |
Always |
Below 1 Ω |
C-3 - Body ground |
Always |
10 kΩ or higher |
C-3a - Body ground |
Always |
10 kΩ or higher |
*a |
Telephone Antenna Cord Sub-assembly Side |
*b |
No. 2 Instrument Panel Wire |
NG | ![]() |
REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 2 ANTENNA CORD SUB-ASSEMBLY) |
|
5. |
INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 2 INSTRUMENT PANEL WIRE) |
(a) Disconnect the No. 2 instrument panel wire from the No. 2 antenna cord sub-assembly. |
|
(b) Disconnect the No. 2 instrument panel wire from the DCM (telematics transceiver).
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
E-3 - G44-1 (TEL1) |
Always |
Below 1 Ω |
E-3a - G44-1a |
Always |
Below 1 Ω |
E-3 - Body ground |
Always |
10 kΩ or higher |
E-3a - Body ground |
Always |
10 kΩ or higher |
*a |
No. 2 Antenna Cord Sub-assembly Side |
*b |
DCM (Telematics Transceiver) Side |
NG | ![]() |
REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 2 INSTRUMENT PANEL WIRE) |
|
6. |
REPLACE TELEPHONE AND GPS ANTENNA (TELEPHONE ANTENNA ASSEMBLY) |
(a) Replace the telephone and GPS antenna with a normally functioning one and
check if the same problem occurs again (See page
).
OK:
The system returns to normal.
OK | ![]() |
END (TELEPHONE AND GPS ANTENNA IS DEFECTIVE) |
|
7. |
REPLACE DCM (TELEMATICS TRANSCEIVER) |
(a) Replace the DCM (Telematics Transceiver) (See page
).
NOTICE:
NEXT | ![]() |
PERFORM DCM ACTIVATION |
Data List / Active Test
DATA LIST / ACTIVE TEST
1. READ DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any parts. This non-intrusive
inspection can be very usefu ...
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Main switch
To use the power outlet, turn on the main switch.
The power supply starts a few seconds after the main switch is pressed.
Power outlet socket (in the console box)
Power outlet socket ...