How To Proceed With Troubleshooting

DOOR LOCK: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: HOW TO PROCEED WITH TROUBLESHOOTING

HINT
* Use the following procedures to troubleshoot the smart access system with push-button start.
* The Techstream can be used in steps 4 and 6.
* When troubleshooting the smart access system with push-button start using the Techstream with the engine switch off, connect the 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 CHECK

HINT
* In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
* Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
* The following 5 items are important points in the problem analysis






NEXT -- Continue to next step.

3. INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

NEXT -- Continue to next step.

4. INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)

(a) Use the Techstream to check if the Multiplex Communication System (MPX) is functioning normally Reading and Clearing Diagnostic Trouble Codes.

Result:





B -- Go to MULTIPLEX COMMUNICATION SYSTEM
A -- Continue to next step.

5. CHECK FOR DTC

(a) Check for DTCs and note any codes that are output Smart Access System With Push-Button Start.

(b) Delete the DTCs.

(c) Recheck for DTCs.

Result





B -- GO TO DIAGNOSTIC TROUBLE CODE CHART
A -- Continue to next step.

6. PROBLEM SYMPTOMS TABLE

NEXT -- Continue to next step.

7. OVERALL ANALYSIS AND TROUBLESHOOTING

(a) On-vehicle inspection On-Vehicle Inspection

(b) DATA LIST/ACTIVE TEST Smart Access System With Push-Button Start

(c) Terminals of ECU Smart Access System With Push-Button Start

NEXT -- Continue to next step.

8. REPAIR OR REPLACEMENT

NEXT -- Continue to next step.

9. CONFIRMATION TEST

NEXT -- END