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A/T FAULTY OPERATION PREVENTION MECHANISM DIAGNOSIS TSB Revision AUTOMATIC TRANSMISSION 23A-527 A/T FAULTY OPERATION PREVENTION MECHANISM DIAGNOSIS INTRODUCTION TO A/T KEY INTERLOCK AND SHIFT LOCK MECHANISMS M1232001600271 If the key interlock and shift lock mechanisms indi- A/T KEY INTERLOCK AND SHIFT LOCK MECHANISM DIAGNOSTIC M1232001700278 Use these steps to plan your diagnostic strategy. If 2. Verify that the condition described by the customer exists. 3. Find the malfunction by following the Symptom Chart. 4. Verify malfunction is eliminated. SYMPTOM CHART <A/T FAULTY OPERATION PREVENTION MACHANISM> M1232001800479 51 Buzzer Ignition switch: ON When buzzer not Battery positive voltage When buzzer 0 V ⇔ battery positive voltage 52 4LLc indicator light • Ignition switch: ON • Transmission range: N Transfer shift lever 1 V or less Transfer shift lever Battery positive voltage TERMINAL INSPECTION ITEMS INSPECTION REQUIREMENT NORMAL CONDITION SYMPTOM INSPECTION REFERENCE Selector lever can be moved from "P" to "R" position without depressing 1 Selector lever cannot be moved from "P" to "R" position with brake 2 Selector lever can be moved from "P" to "R" position with brake pedal 3 Selector lever cannot be moved from "P" to "R" position smoothly. 4 |