Automatic Transmission Preliminary Inspection
AUTOMATIC TRANSMISSION PRELIMINARY INSPECTIONThe following items must be checked prior to beginning the diagnostic procedures:
Determine Customer Concern
Note:
^ Some transmission conditions can cause engine concerns. An electronic pressure control short circuit can cause engine misfiring. The torque converter clutch not disengaging stalls the engine.
Determine customer concerns relative to vehicle use and dependent driving conditions, paying attention to the following items:
^ Hot or cold vehicle operating temperature
^ Hot or cold ambient temperatures
^ Type of terrain
^ Vehicle loaded/unloaded
^ City/highway driving
^ Upshift
^ Downshift
^ Coasting
^ Engagement
^ Noise/vibration check for dependencies, either rpm dependent, vehicle speed dependent, shift dependent, gear dependent, range dependent, or temperature dependent.