Are any low or high voltage Diagnostic Trouble Codes (DTCs) recorded in the ACM or APIM?
Yes | • For DTC U3003:16, GO to Pinpoint Test AQ • For DTC U3003:17, GO to Pinpoint Test AR | |
|---|---|---|
No | GO to AL4 | |
AL4 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OPERATION
Ignition OFF. Disconnect and inspect all the ACM connectors. Repair:
Corrosion (clean module pins or install new connectors or terminals) Damaged or bent pins (install new terminals or 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new ACM. REFER to: Audio Front Control Module (ACM) (415-00A Information and Entertainment System - General Information - Vehicles With: AM/FM/CD/SYNC, Removal and Installation). | |
|---|---|---|
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. | |
U0237:00
Normal Operation and Fault Conditions
REFER to: Information and Entertainment System - System Operation and Component Description (415-00A Information and Entertainment System - General Information - Vehicles With: AM/FM/CD/SYNC, Description and Operation). See Network Message Chart.
DTC Fault Trigger Conditions
Description | Fault Trigger Conditions |
|---|---|
U0237:00 Lost Communication With Digital Audio Control Module "C": No Sub Type Information | Set by the ACM when network messages are missing from the DACMC for more than 5 seconds with the ignition in RUN. |
DTC
Possible Source
DACMC
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