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Home › Jeep › 2013 › Grand Cherokee Laredo, RWD › 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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