Diagnostic Procedure
WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC TEST REFERENCE - VEHICLE IS SLUGGISH WITH NO DTC'S PRESENT
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 |
NOTE:
Engine viscous fan sticking can cause this complaint. Check the engine viscous fan for proper operation per the Service Information.Does the engine fan operate correctly?Yes --> Go To 2No --> Repair the engine viscous fan per the Service Information.Perform TRANSMISSION NO TROUBLE CODE VERIFICATION TEST . |
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| 2 | If the transmission shifts too early when the transmission is cold, this is a normal condition. Did the problem occur when the transmission temperature was cold? Yes --> The software is designed to protect the transmission from high torque and/or high RPM shifts during cold operation. Perform TRANSMISSION NO TROUBLE CODE VERIFICATION TEST . No --> Go To 3 |
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| 3 | With the DRBIII®, attempt to communicate with other Modules, check for signs of a bus problem such as bus related DTC's and/or communication problems. Although it takes two occurrences of a missed TRD link message to set a DTC, one missed message will cause the transmission to short shift until the next start up. If the vehicle has any indications of a bus problem, the bus must be repaired first. Are there any bus related DTCs or signs of a bus problem in any of the modules? Yes --> Refer to the appropriate category for the bus problem. Perform TRANSMISSION NO TROUBLE CODE VERIFICATION TEST . No --> Test Complete. |
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