Visually inspect the system components for customer's concern.
Verify wiring and connections for the manual lever position sensor to find
looseness, corrosion, damage or other obvious
causes of a malfunction.
If an obvious cause of an observed or reported malfunction is found,
correct the cause if possible before proceeding to the next step.
If the cause of the malfunction cannot be found by system inspection,
proceed to Symptom Chart which serves as a guide for further diagnosis to
validate customer's concern.