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Pinpoint Test AY : The Powertrain Malfunction (Wrench) RTT (RECONFIGURABLE Telltale) Is Never Or Always On: Notes

Normal Operation and Fault Conditions 

See Powertrain Malfunction (Wrench) RTT. REFER to: Message Center - System Operation And Component Description .

If the transmission service required, engine service required or body service required message is missing for less than 5 seconds, the IPC defaults the powertrain malfunction (wrench) RTT to the last indication state (on or off), based upon the last message received.

If the transmission service required, engine service required or body service required message is missing for 5 seconds or longer, the IPC defaults the powertrain malfunction (wrench) RTT on.

Possible Sources 

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