How To Proceed With Troubleshooting

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

1. VEHICLE BROUGHT TO WORKSHOP 
2. CUSTOMER PROBLEM ANALYSIS (SEE  CUSTOMER PROBLEM ANALYSIS CHECK   ) 
3. CHECK AND CLEAR DTCs (SEE  DTC CHECK/CLEAR   ) 
4. PROBLEM SYMPTOM CONFIRMATION 
   1. Turn the power switch on (IG).
   2. Turn the P position switch on, or move the selector lever to the R, N, or D position with the brake pedal depressed to see if any problem symptom occurs.

      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  MULTIPLEX COMMUNICATION SYSTEM  ) 

   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  CAN COMMUNICATION SYSTEM  ) 

   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. DTC CHECK (SEE DTC CHECK/CLEAR  DTC CHECK/CLEAR   ) 

   DTC IS NOT OUTPUT (Go to step 9) 

   DTC IS OUTPUT (Go to step   10 ) 

9. PROBLEM SYMPTOMS TABLE (SEE  PROBLEM SYMPTOMS   ) 

   Go to step   11 

10. DTC CHART (SEE  DIAGNOSTIC TROUBLE CODE CHART   ) 
11. CIRCUIT INSPECTION (SEE  DTC C2300 ACT SYSTEM MALFUNCTION   to  P POSITION SWITCH INDICATOR LIGHT CIRCUIT   ) 
12. PROBLEM IDENTIFICATION 
13. REPAIR OR REPLACEMENT 
14. CONFIRMATION TEST 

END