Diagnostic Flow Chart

WARNING: This page is about a different car, the 2005 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.

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.

DIAGNOSTIC FLOW CHART

Diagnostic Flow Chart
Did you record any Diagnostic Trouble Codes (DTCs)?	Yes	REPAIR all hard DTCs. FOLLOW the pinpoint tests. See INTRODUCTION - GASOLINE article first, then this article, then GO to Step 2.
Did you record any Diagnostic Trouble Codes (DTCs)?	No	REFER to DIAGNOSIS BY SYMPTOM then GO to Step 1.
#2) Are any continuous test memory codes present?	Yes	CLEAR codes and CARRY OUT drive cycle test, then GO to Step 3.
#2) Are any continuous test memory codes present?	No	GO to Step 1.
#3) Did the continuous test memory codes reappear?	Yes	REPAIR all continuous test memory codes. FOLLOW the pinpoint tests. See INTRODUCTION - GASOLINE article , then the information from this 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 to diagnose and repair the concern, then GO to Step 5.
#5) Is the concern repaired?	Yes	CARRY OUT the final quick test to verify that no DTCs are present. CLEAR memory codes.
#5) Is the concern repaired?	No	GET assistance from Technical Hotline.