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 assembly 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 MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE POWER SOURCE)
(a) Remove the map light assembly but do not disconnect the connector Removal.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Text in Illustration
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) - MAP LIGHT ASSEMBLY)
(a) Disconnect the J114 DCM (Telematics Transceiver) connector.
(b) Disconnect the R5 map light assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
Text in Illustration:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. REPLACE TELEPHONE MICROPHONE ASSEMBLY
(a) Replace the telephone microphone assembly with a normal one and check if the same problem occurs again Removal.
OK:
The system returns to normal.
NG -- REPLACE MAP LIGHT ASSEMBLY Removal
OK -- END
5. 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 according to the value(s) in the table below.
Standard Voltage:
Text in Illustration
Text in Illustration:
NG -- REPLACE DCM (TELEMATICS TRANSCEIVER)
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR
6. 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