Diagnostic Flow Chart

SPECIAL TOOL(S)

Courtesy of FORD MOTOR CO.

Worldwide Diagnostic System (WDS)
Vehicle Communication Module (VCM) with appropriate adapters, 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 for vehicle concerns.
Carry out quick test both KOER and KOEO.
Record all codes.

DIAGNOSTIC FLOW CHART

Test	Result	Action
1) Did you record any diagnostic trouble codes?	Yes	REPAIR all hard diagnostic trouble codes. FOLLOW the pinpoint tests. REFER to the INTRODUCTION - GASOLINE article first, article.
1) Did you record any diagnostic trouble codes?	No	REFER to DIAGNOSIS BY SYMPTOM in this article, then GO to Step 5.
2) Are any continuous test memory codes present?	Yes	CLEAR codes and CARRY OUT 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 the transmission reference manual, 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 diagnostic trouble codes are present. CLEAR memory codes.
4) Is the concern repaired?	No	REFER to DIAGNOSIS BY SYMPTOM in this article.
5) Are there any electrical concerns?	Yes	INSTALL the diagnostic tool and CARRY OUT the output state control test, then GO to Step 6.
5) Are there any electrical concerns?	No	REFER to the hydraulic and mechanical routine to diagnose and REPAIR the concern, then GO to Step 7.
6) Was the transmission concern corrected when the diagnostic tool was installed?	Yes	REFER to the INTRODUCTION - GASOLINE article, intermittent fault diagnosis article and use the diagnostic 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 7.
7) Is the concern repaired?	Yes	CARRY OUT the final quick test to verify that no diagnostic trouble codes are present. CLEAR memory codes.
7) 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.