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Diagnostic Flow Chart

DIAGNOSTIC FLOW CHART

Diagnostic Flow Chart
  • 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

1) Did you record any Diagnostic Trouble Codes?
Yes
  • REPAIR all hard Diagnostic Trouble Codes. FOLLOW the pinpoint tests. REFER to the INTRODUCTION - GASOLINE , then GO to Step 2.
No
2) Are any continuous test memory codes present? Yes
  • CLEAR codes and CARRY OUT drive cycle test, then GO to Step 3.
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 , then GO to Step 4.
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.
No
5) Are there any electrical concerns? Yes
  • INSTALL the Transmission Tester. CARRY OUT static and drive test with the transmission tester, then GO to Step 6.
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 Transmission Tester was installed? Yes
  • REFER to the INTRODUCTION - GASOLINE , intermittent fault diagnosis article and use the Transmission Tester or 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 diagnostic trouble codes are present. CLEAR memory codes.
No
  • GET assistance from Technical Hotline.