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Home >> Lexus >> 2005 >> RX 330 FWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Electronic Controlled Automatic Transaxle (ECT) - Diagnostics >> How To Proceed With Troubleshooting

How To Proceed With Troubleshooting

The hand-held tester can be used at step 3 4 6 9.

HINT:

The ECM of this system is connected to the multiplex communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the multiplex communication system.

  1. Vehicle Brought to Workshop 
    1. Go to next step.
  2. (See  CUSTOMER PROBLEM ANALYSIS CHECK   ) 
    1. Go to next step.
  3. Connect the OBD II scan tool or hand-held tester to DLC3 
    1. Go to next step.
  4. Check and Clear DTC and Freeze Frame Data (See  PRE-CHECK   ) 
    1. Go to next step.
  5. Visual Inspection 
    1. Go to next step.
  6. Setting the Check Mode Diagnosis (See  PRE-CHECK   ) 
    1. Go to next step.
  7. Problem Symptom Confirmation 
    1. Symptom does not occur: Go to step 8 
    2. Symptom occur: Go to step  9 
  8. Symptom Simulation (See  HOW TO PROCEED WITH TROUBLESHOOTING  ) 
    1. Go to next step.
  9. DTC Check (See  PRE-CHECK   ) 
    1. DTC is not output: Go to step 10 
    2. DTC is output: Go to step  17 
  10. Basic Inspection (See  AUTOMATIC TRANSAXLE FLUID (ATM)  ,  PARK/NEUTRAL POSITION SWITCH ASSY (ATM)  and  SHIFT LEVER ASSY (ATM)  ) 
    1. NG: Go to step  19 
    2. OK: Go to next step. 
  11. Mechanical System Test (See   12  ) 
    1. NG: Go to step  16 
    2. OK: Go to next step. 
  12. Manual Shifting Test (See   14  ) 
    1. NG: Go to step  14 
    2. OK: Go to next step. 
  13. Problem Symptoms Table Chapter 1 (See  PROBLEM SYMPTOMS TABLE   ) 
    1. NG: Go to step  18 
    2. OK: Go to next step. 
  14. Problem Symptoms Table Chapter 2 (See  PROBLEM SYMPTOMS TABLE   ) 
    1. NG: Go to step  16 
    2. OK: Go to next step. 
  15. Problem Symptoms Table Chapter 3 (See  PROBLEM SYMPTOMS TABLE   ) 
    1. NG: Go to next step. 
  16. Part Inspection 
    1. Go to step  19 
  17. (See  DIAGNOSTIC TROUBLE CODE CHART   ) 
    1. Go to next step.
  18. Circuit Inspection (See  DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT)   ) 
    1. Go to next step.
  19. Identification of Problem 
    1. Go to next step.
  20. Repair 
    1. Go to next step.
  21. Confirmation Test 
    1. End