Diagnostic Flow Chart
4F27E
Diagnostic Flow Chart
Prior to carrying out the flow test, the following items should be checked:
- Know and understand the customer concerns.
- Verify the concern by operating the vehicle.
- Check the transmission fluid level and condition.
- Check for non-factory installed items and verify correct installation.
- Check the selector lever linkage adjustments.
- Check TSBs for vehicle concerns.
- Carry out Self Test both Key ON Engine OFF (KOEO) and Key ON Engine Running (KOER).
- Record all DTC codes.
