Preliminary Inspection

Perform preliminary inspection in the following order:

• Read any DTCs before battery is disconnected, see DIAGNOSIS & TESTING in appropriate ELECTRONIC CONTROLS article.
• Ensure fluid level is correct. See appropriate AUTOMATIC TRANSMISSION SERVICING article in TRANSMISSION SERVICING.
• Inspect and adjust throttle cable and park/neutral position switch. See appropriate AUTOMATIC TRANSMISSION SERVICING article in TRANSMISSION SERVICING.
• Check stall speeds. See STALL SPEED TEST  under PERFORMANCE TESTS.
• Check hydraulic pressure, see HYDRAULIC PRESSURE TESTS  under PERFORMANCE TESTS.
• Test drive vehicle and document shift points. See ROAD TEST  under PERFORMANCE TESTS.

  If preliminary inspection is okay, diagnose by symptom. See SYMPTOM DIAGNOSIS  .