Diagnostic Flow Chart

DIAGNOSTIC FLOW

Test	Result	Action
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 messages for vehicle concerns. Carry out quick test both KOER and KOEO. Record all codes. 1) Did you record any Diagnostic Trouble Codes?	Yes	Repair all hard Diagnostic Trouble Codes. Follow the pinpoint tests. Refer to INTRODUCTION - CNG, FLEX-FUEL & GASOLINE first, then this article.
	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 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 INTRODUCTION - CNG, FLEX-FUEL & GASOLINE then 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 Diagnostic Trouble Codes are present. Clear memory codes. Return vehicle to customer.
4) Is the concern repaired?	No	Refer to DIAGNOSIS BY SYMPTOM .
5) Are there any electrical concerns?	Yes	Install the diagnostic tool and carry out 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 transaxle concern corrected when the diagnostic tool was installed?	Yes	Refer to INTRODUCTION - CNG, FLEX-FUEL & GASOLINE , intermittent fault diagnosis 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. Return the vehicle to the customer.
7) Is the concern repaired?	No	No additional information available. Repeat test as necessary.