General diagnostics of automatic transmission (Mazda Capella GC)

Automatic transmission malfunctions can be caused by the following four reasons:

• unstable engine operation;
• incorrect adjustment;
• hydraulic system malfunction;
• malfunctions of mechanical elements.

Troubleshooting should always begin with checking easily repairable components and adjustment parameters, such as the working fluid level and condition, adjustment of the gear shift rod and throttle rod. Then perform a road test to determine if the problem has been corrected or if further diagnostics are required. If the fault persists after completion of preliminary tests, further diagnostics should be carried out in a specialized workshop.