How To Proceed With Troubleshooting

DOOR LOCK: SMART KEY SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HINT
* Use this procedure to troubleshoot the smart key system.
* Techstream can be used in steps 3, 4, 5 and 7.
* When troubleshooting the smart key system using Techstream with the engine switch off, connect Techstream to the vehicle and repeat turning any of the courtesy light switches on and off until communication between the tester and the vehicle begins (the interval ON and OFF should be less than 1.5 sec.).

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. CUSTOMER PROBLEM ANALYSIS

(a) Confirm problem symptoms.

NEXT -- Continue to next step.

3. CHECK MULTIPLEX COMMUNICATION SYSTEM

(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

HINT
This system uses multiplex communication. Check for DTCs for the multiplex communication system before performing the troubleshooting.

Result:





B -- GO TO MULTIPLEX COMMUNICATION SYSTEM
A -- Continue to next step.

4. CHECK DTC

(a) Check for DTCs Door Lock - Smart Key System.

(1) Record the DTCs.

(b) Clear the DTCs.

HINT
After DTCs are all cleared, check if the trouble occurs again 6 seconds after the engine switch is turned on (IG).

(c) Recheck for DTCs.

(1) Simulate the malfunction and check if the DTCs are output again.

Result:





B -- Go to step 10

C -- SYMPTOM SIMULATION
A -- Continue to next step.

5. DTC CHART

NEXT -- Continue to next step.

6. CIRCUIT INSPECTION

NEXT -- Continue to next step.

7. OVERALL ANALYSIS AND TROUBLESHOOTING

(a) DATA LIST / ACTIVE TEST Door Lock - Smart Key System

(b) TERMINALS OF ECU Door Lock - Smart Key System

(c) ON-VEHICLE INSPECTION On-Vehicle Inspection

NEXT -- Continue to next step.

8. ADJUST, REPAIR OR REPLACE

NEXT -- Continue to next step.

9. CONFIRMATION TEST

NEXT -- END

10. PROBLEM SYMPTOMS TABLE

NEXT -- Continue to next step.

11. ADJUST, REPAIR OR REPLACE

NEXT -- Continue to next step.

12. CONFIRMATION TEST

NEXT -- END