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Home › Chrysler › 2011 › 300 Base, Gas/Ethanol › Repair and Diagnosis › Transmission › Transmission Control Systems › (Transmission Control Module (TCM) - Electrical Diagnostics) › DTC Troubleshooting › P1633-TCM Internal - Test External Watchdog Performance › Set Condition:

Set Condition:

If the TCM detects an error with the controllers external watchdog - failed the power up test.

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