| Diagnosis and Testing This inspection will identify modifications or additions to the vehicle operating system that may affect diagnosis. Inspect the vehicle for non-Ford factory add-on devices such as: - Electronic add-on items:
- Vehicle modification:
These items, if not installed correctly, will affect the powertrain control module (PCM), or transaxle function. Pay particular attention to add-on wiring splices in the PCM harness or transaxle wiring harness, abnormal tire size, or axle ratio changes. - leaks; refer to Leakage Inspection in this section.
- correct linkage adjustments; refer to Section 307-05.
Shift Linkage Check Check shift linkage adjustment by matching the detents in the transaxle range selector lever with those in the transaxle. If they match, the error is in the indicator. Do not adjust the shift linkage. Hydraulic leakage at the manual control valve can cause delay in engagements and slipping while operating if the linkage is not correctly adjusted; refer to Section 307-05 for shift linkage adjustment. Check TSBs and OASIS Refer to all TSBs and OASIS messages which pertain to the transaxle concern and follow the procedure as outlined. Carry Out On-Board Diagnostics (KOEO, KOER) After a road test, with the vehicle warm and before disconnecting any connectors, carry out the Quick Test using scan tool. Refer to the PCED for diagnosis and testing of the powertrain control system. | 
