Pinpoint Test C : A Loud Popping Sound Is Heard From The Speakers When Cycling The Ignition
WARNING: This page is about a different car, the 2018 Ford EcoSport. However, it is still accessible from the selected car via links, so may be relevant.
- Normal Operation and Fault Conditions
Possible Sources
- Communication concern
- ACM
- C1 CHECK FOR COMMUNICATION DIAGNOSTIC TROUBLE CODES (DTCS)
- Ignition ON.
- Using a diagnostic scan tool, carry out the ACM self-test.
Are any Diagnostic Trouble Codes (DTCs) present?
Yes REFER to ACM DTC Chart) in this information. No GO to C2 - C2 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OPERATION
- Ignition OFF.
- Disconnect and inspect all the ACM connectors.
- Repair:
- corrosion (install new connectors or terminals - clean module pins)
- damaged or bent pins - install new terminals pins
- pushed-out pins - install new pins as necessary
- Reconnect the ACM connectors. Make sure they seat and latch correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new ACM. REFER to: Audio Front Control Module (ACM) . No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.