Pinpoint Test AO : The Charging System RECONFIGURABLE Telltale (RTT) Is Never Or Always On
WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
- AO1 CHECK THE RECONFIGURABLE TELLTALE (RTT) FUNCTION
- Ignition OFF.
- Disconnect: PCM C175E .
- Ignition ON.
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NOTE: If multiple warnings are present, the message center cycles through each of the warning indicators. Allow the message center to cycle through each display while determining whether the door ajar Reconfigurable Telltale (RTT) is active.
Observe the message center or integrated display area of the IPC with the PCM connected and disconnected.
Do the powertrain malfunction (wrench) and engine over-temperature warning message center indicators remain off when the PCM is connected and become active with the PCM disconnected?
Yes GO to AO2. No Refer to IPC Hardware Testing . - AO2 PERFORM THE BCM SELF-TEST
- Using a diagnostic scan tool, perform the BCM self-test.
Are any charging system DTCs recorded?
Yes REFER to Multifunction Electronic Modules . No GO to AO3. - AO3 CHECK THE CHARGING SYSTEM OPERATION
- Check the charging system operation.
Does the charging system operate correctly?
Yes If the charging system Reconfigurable Telltale (RTT) is never on, the system is operating correctly at this time.If the charging system Reconfigurable Telltale (RTT) is always on, Refer to BCM Hardware Testing . No DIAGNOSE the charging system. REFER to Charging System .