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Home >> Jeep >> 2007 >> Commander Base, 4.7 P, AWD >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> 545RFE Automatic Transmission (Service Information) >> 545RFE - Service Information >> Diagnosis And Testing >> Preliminary >> Vehicle Is Drivable

Vehicle Is Drivable

  1. Record all DTCs and the accompanying DTC Event Data.
  2. Check for an appropriate Technical Service Bulletin that applies to the customer complaint.
  3. Check fluid level and condition.
  4. Road test and note how transmission upshifts, downshifts, and engages.
  5. If the complaint was related to shift quality, perform the Quick Learn and Drive Learn Procedures. Refer to STANDARD PROCEDURE .
  6. If the shift complaint still exists, compare actual line pressure (sensor reading, using the scan tool) to the Desired Line Pressure reading, in Park, Drive, and Reverse at 1500 RPM. Check that the LP sensor reads 30 psi (the minimum it should ever display) with key on / engine off.
  7. Perform air-pressure test to check clutch operation. See DIAGNOSIS AND TESTING .
  8. Replace the Transmission Solenoid/TRS Assembly and perform the Quick Learn and Drive Learn procedures again. Refer to STANDARD PROCEDURE .
  9. If the complaint still exists, remove, inspect, and repair the transmission as necessary
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