How To Proceed With Troubleshooting

The hand-held tester can be used during steps 3, 8 and 11.

1. VEHICLE BROUGHT TO WORKSHOP 
2. (SEE  CUSTOMER PROBLEM ANALYSIS CHECK   ) 
3. (SEE  DTC CHECK/CLEAR   ) 
4. PROBLEM SYMPTOM CONFIRMATION 

   SYMPTOM DOES NOT OCCUR (Go to step 5) 

   SYMPTOM OCCURS (Go to step   6 ) 

5. SYMPTOM SIMULATION (SEE  HOW TO PROCEED WITH TROUBLESHOOTING  ) 
6. CHECK MULTIPLEX COMMUNICATION SYSTEM (SEE  HOW TO PROCEED WITH TROUBLESHOOTING  ) 

   HINT:

   The steering lock ECU is connected to the multiplex communication system. Therefore, be sure to check that there are no problems in the multiplex communication system before performing troubleshooting.

7. CHECK CAN COMMUNICATION SYSTEM (SEE  HOW TO PROCEED WITH TROUBLESHOOTING  ) 

   HINT:

   This ECU is connected to the CAN communication system. Therefore, be sure to check that there are no troubles in the CAN communication system before performing troubleshooting.

8. (SEE  DTC CHECK/CLEAR   ) 

   DTC IS NOT OUTPUT (Go to step 9) 

   DTC IS OUTPUT (Go to step   10 ) 

9. (SEE  PROBLEM SYMPTOMS TABLE   ) 

   NG: Go to step   11 

10. (SEE  DIAGNOSTIC TROUBLE CODE CHART   ) 
11. CIRCUIT INSPECTION (SEE  DTC B2775 INTERIOR VERIFICATION ABNORMAL (TO THEFT DETERRENT ECU)   to  SHIFT LOCK CONTROL ECU COMMUNICATION CIRCUIT   ) 
12. PROBLEM IDENTIFICATION 
13. REPAIR OR REPLACEMENT 
14. CONFIRMATION TEST 

    END