Diagnostic Flow Chart

SPECIAL TOOLS REFERENCE

Courtesy of FORD MOTOR CO.

Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool

Prior to carrying out the flow test, the following items should be checked:

Know and understand the customer concerns.
Check the fluid level and condition.
Verify the concern by operating the vehicle.
Check for non-factory-installed items and verify correct installation.
Check the shift linkage adjustments.
Check TSBs and OASIS messages for vehicle concerns.
Carry out quick test both KOER and KOEO.
Record all codes.
Verify that the vehicle transmission control module (TCM) is at the latest calibration release level.

DIAGNOSTIC FLOW CHART

Test	Result	Action
1) Were any diagnostic trouble codes (DTCs) recorded?	Yes	REPAIR all hard DTCs. FOLLOW the pinpoint tests. REFER to the INTRODUCTION - GASOLINE article, then GO to Step 2.
1) Were any diagnostic trouble codes (DTCs) recorded?	No	REFER to DIAGNOSIS BY SYMPTOM , then GO to Step 5.
2) Are any continuous test memory codes present?	Yes	CLEAR codes and CARRY OUT the drive cycle test.
2) Are any continuous test memory codes present?	No	GO to Step 4.
3) Did the continuous test memory codes reappear?	Yes	REPAIR all continuous test memory codes. FOLLOW the pinpoint tests. REFER to the INTRODUCTION - GASOLINE article, then GO to Step 4.
3) Did the continuous test memory codes reappear?	No	GO to Step 4.
4) Is the concern repaired?	Yes	CARRY OUT the final quick test to verify that no DTCs are present. CLEAR memory codes.
4) Is the concern repaired?	No	REFER to DIAGNOSIS BY SYMPTOM .
5) Was the transmission concern corrected when the scan tool was installed?	Yes	REFER to the INTRODUCTION - GASOLINE article and use the scan tool to diagnose cause of concern in the processor, vehicle harness or external inputs (sensors or switches).
	No	REFER to the hydraulic and mechanical routine to diagnose the concern, then GO to Step 6.
6) Is the concern repaired?	Yes	CARRY OUT the final quick test to verify that no DTCs are present. CLEAR memory codes.
6) Is the concern repaired?	No	Concern should have been repaired. GO back through the diagnostic flow chart and REVIEW other components that may have contributed to the concern. CHECK and DIAGNOSE those components. GET assistance from other sources.