B1572

CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B1572: Telephone Microphone Error
B1572 - Telephone Microphone Error

DESCRIPTION

This DTC is set when the DCM (Telematics Transceiver) detects a malfunction in the telephone microphone circuit.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC

(a) Turn the engine switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the engine 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 ROOF CONSOLE BOX ASSEMBLY (TELEPHONE MICROPHONE POWER SOURCE)

(a) Remove the roof console box assembly but do not disconnect the connectors Removal.





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

Standard Voltage:





Standard Resistance:





Text in Illustration





NG -- INSPECT DCM (TELEMATICS TRANSCEIVER) (TELEPHONE MICROPHONE POWER SOURCE)
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - ROOF CONSOLE BOX ASSEMBLY)

(a) Disconnect the I135 DCM (Telematics Transceiver) connector.

(b) Disconnect the S12 roof console box assembly connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE TELEPHONE MICROPHONE (ROOF CONSOLE BOX ASSEMBLY) Removal

4. INSPECT DCM (TELEMATICS TRANSCEIVER) (TELEPHONE MICROPHONE POWER SOURCE)

(a) Remove the DCM (Telematics Transceiver) but do not disconnect the connectors Removal.





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

Standard Voltage:





Standard Resistance:





Text in Illustration





NG -- REPLACE DCM (TELEMATICS TRANSCEIVER)

OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR

5. REPLACE DCM (TELEMATICS TRANSCEIVER)

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

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

NEXT -- PERFORM DCM ACTIVATION DCM Activation