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Home >> Jeep >> 2008 >> Commander Base, 3.7 K, AWD >> Repair and Diagnosis (Single Page) >> Transmission >> Transmission Control Systems >> Nag1 Automatic Transmission - Shifter Diagnostics >> Automatic Transmission Nag1 - Shifter Diagnostics >> DTC Troubleshooting >> P2779-AUTOSTICK Downshift Switch Circuit Performance - ESM >> Possible Causes

Possible Causes

Possible Causes 
SHIFTER LEVER ASSEMBLY

Always perform the NAG1 PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  before proceeding.

The AutoStick Switch is integrated into the Shift Lever Assembly. The gear requested by the AutoStick selection is then sent over the CAN C bus from the Electronic Shift Module (ESM) to the TCM to engage the requested gear.

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