B1573

CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B1573,B15CB: Short in Telephone Antenna Circuit
B1573 - Short in Telephone Antenna Circuit
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 circuit. The DCM (Telematics Transceiver) oscillates and receives 824 - 894 MHz or 1850 - 1990 MHz radio-frequency through the telephone and GPS antenna assembly.





HINT
Refer to "PARTS LOCATION" for the installation location of telephone and GPS antenna cord Safety Connect System.

INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC

(a) Turn the power switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch on (IG) and wait for 10 seconds.

(d) Turn the Techstream on.

(e) Perform "HEALTH CHECK" and check for current DTCs Health Check.

Result:





B -- CHECK FOR INTERMITTENT PROBLEMS How To Proceed With Troubleshooting
A -- Continue to next step.

2. INSPECT TELEPHONE AND GPS ANTENNA ASSEMBLY

(a) Disconnect the telephone and GPS antenna assembly connector from the telephone and GPS antenna cord (antenna cord sub-assembly).





(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





Text in Illustration





NG -- REPLACE TELEPHONE AND GPS ANTENNA ASSEMBLY Removal
OK -- Continue to next step.

3. INSPECT TELEPHONE AND GPS ANTENNA CORDS (ANTENNA CORD SUB-ASSEMBLY)

(a) Disconnect the telephone and GPS antenna cord (antenna cord sub-assembly) connector from the telephone and GPS antenna cord (navigation antenna)*1 or telephone and GPS antenna cord (No. 2 antenna cord sub-assembly)*2.

* *1: w/ Navigation System

* *2: w/o Navigation System





(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





Text in Illustration





NG -- REPLACE TELEPHONE AND GPS ANTENNA CORD (ANTENNA CORD SUB-ASSEMBLY) Removal
OK -- Continue to next step.

4. INSPECT TELEPHONE AND GPS ANTENNA CORDS

(a) Disconnect the telephone and GPS antenna cord (navigation antenna)*1 or telephone and GPS antenna cord (No. 2 antenna cord sub-assembly)*2 connector from the DCM (Telematics Transceiver).

* *1: w/ Navigation System

* *2: w/o Navigation System





(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





Text in Illustration





Result:





C -- REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 2 ANTENNA CORD SUB-ASSEMBLY) Removal

B -- REPLACE TELEPHONE AND GPS ANTENNA CORD (NAVIGATION ANTENNA) Removal
A -- Continue to next step.

5. REPLACE TELEPHONE AND GPS ANTENNA ASSEMBLY

(a) Replace the telephone and GPS antenna assembly with a normal one and check if the same problem occurs again Removal.

OK:

The system returns to normal.

NG -- REPLACE DCM (TELEMATICS TRANSCEIVER)

OK -- END

6. REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (Telematics Transceiver) Removal.

NOTICE:
* The power switch must be off.
* Do not swap the DCM (Telematics Transceiver) with one from another vehicle.

NEXT -- PERFORM DCM ACTIVATION DCM Activation