DTC B1725[49] Speaker Microphone Internal Failure (eCall unit)

1. Current DTC check

1) Connect the scan tool.

2) Turn ON the ignition switch.

3) Observe the DTC information with a scan tool. Is a DTC set?

Yes

=>Go to Speaker microphone replacement.

No

Go to Intermittent conditions of body control system.

Refer to "223.Body Control 36D.Symptom(eCall unit) intermittent conditions of body control system".

2. Speaker microphone replacement

Refer to "9.Body, Cab, Accessories 9E.Instrumentation, Driver Info. Speaker microphone removal".

Refer to "9.Body, Cab, Accessories 9E.Instrumentation, Driver Info. Speaker microphone installation".

Procedure completion

=>Go to Repair verification.

3. Repair verification

1) Clear the DTC with a scan tool.

2) Turn OFF the ignition switch for 30 seconds or more.

3) Turn ON the ignition switch.

4) Observe the DTC information with a scan tool.