Diagnostic Flow Chart

DIAGNOSTIC FLOW CHART

Test	Result	Action
1) Were any DTCs recorded?	Yes	REPAIR all hard DTCs. FOLLOW the pinpoint tests. REFER to the INTRODUCTION article first, then this service information , then Go to Step 2.
1) Were any DTCs recorded?	No	REFER to DIAGNOSIS BY SYMPTOM in this service information, then Go to Step 5.
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 4.
3) Did the continuous test memory codes reappear?	Yes	REPAIR all continuous test memory codes. FOLLOW the pinpoint tests. REFER to the INTRODUCTION article then the transmission reference information, then this service information , 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 Key ON Engine OFF (KOEO) and Key ON Engine Running (KOER) self-test to verify that no DTCs are present. CLEAR memory codes.
4) Is the concern repaired?	No	REFER to DIAGNOSIS BY SYMPTOM in this service information, then Go to Step 5.
5) Are there any electrical concerns?	Yes	INSTALL the scan tool. CARRY OUT KOEO and KOER tests and drive cycle test with the scan tool, 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 scan tool was installed?	Yes	REFER to the INTRODUCTION article, intermittent fault diagnosis service information 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 7.
7) Is the concern repaired?	Yes	CARRY OUT the final quick test to verify that no DTCs 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.