With Column Shift

P2775-AUTOSTICK UPSHIFT SWITCH CIRCUIT PERFORMANCE (COLUMN SHIFT)

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The AutoStick(R) Switch is located at the end of the Shift Lever. The gear change is requested by pressing the AutoStick Enable button, then either selecting the Upshift or Downshift on the rocker switch. The ESM then transmits the previous information over the CAN C bus to the TCM to engage the requested gear.

- When Monitored:
When in AutoStick(R) mode.

- Set Condition:
When the expected AutoStick(R) switch state is not correctly sensed by the Electronic Shift Module (ESM). If the upshift switch signal is detected as active in a gear position other than drive or when both the upshift and downshift signals are active at the same time.





Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. NAG1 Pre-Diagnostic Troubleshooting Procedure.
CHECK THE AUTOSTICK SWITCH
AUTOSTICK SWITCH RESISTANCE VALUES (COLUMN SHIFT)










1. Turn the ignition off to the lock position.
2. Disconnect the AutoStick(R) harness connector.
3. Measure the resistance between the AutoStick Switch MUX circuit and the AutoStick Switch MUX Return circuit while checking each switch position.

NOTE: Use the above chart to and compare your resistive readings.

Does the AutoStick Switch resistance readings match the above chart?

Yes

- Using the schematics as a guide, check the Electronic Shift Module (ESM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the ESM (Steering Column).
- Perform NAG1 TRANSMISSION VERIFICATION TEST. NAG1 Transmission Verification Test.

No

- Replace the AutoStick Switch.
- Perform NAG1 TRANSMISSION VERIFICATION TEST. NAG1 Transmission Verification Test.