Windstar V6-3.8L VIN 4 (1997)
Transmission Position Switch/Sensor: Initial Inspection and Diagnostic Overview
Preliminary Inspection
Before you start testing, perform the following preliminary checks. Be sure to write down your findings, especially any DTCs, for future reference.
1. Know and understand the customer's concern.
2. Verify that TR sensor is properly adjusted in NEUTRAL.
3. Verify customer concern (e.g. when does it occur?):
^
Upshift
^
Downshift
^
Coasting
^
Engagement
If concern involves noise or vibration, does it relate to any of the following:
^
rpm
^
Vehicle speed
^
Shift
^
Gear
^
Range
^
Temperature
4. Vehicle must be at normal operating temperature.
5. Check transaxle fluid level and condition.
6. Check for the following items:
^
Vehicle modifications
^
Electronic add-on items
^
Leaks
^
Proper linkage adjustments
7. Check TSBs for related information.
8. Perform complete On-Board Diagnostics (OBD) for both KOEO and KOER.
9. Record all DTCs.
10. Repair all non-transaxle DTCs.
Inspection and Verification
1. Visually inspect the system components for customer's concern.
2. Verify wiring and connections for the transmission range sensor to find looseness, corrosion damage or other obvious causes for a malfunction.
3. If an obvious cause for an observed or reported malfunction is found, correct the cause if possible before proceeding to the next step.
4. If the cause of the malfunction cannot be found by system inspection, refer to Symptom Chart which serves as a guide for further diagnosis to
validate customer's concern. See: Symptom Related Diagnostic Procedures
Important Information
If DTCs are present while performing the on-board diagnostic, refer to the On-Board Diagnostic Trouble Code Description Chart for the appropriate
service procedure.
NOTE:
-
Prior to entering pinpoint tests, refer to any TSBs for transaxle concerns.
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Prior to entering pinpoint tests, the vehicle harness must be checked for continuity and shorts and the Powertrain Control Module (PCM) must be
checked for any concerns.
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If any non-transaxle DTCs appear service those codes first. They could affect the electrical operation of the transaxle. Record and erase codes
from continuous memory after service has been performed. After servicing any DTCs received during the Quick Test, the Quick Test must be
repeated.