How To Proceed With Troubleshooting

THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function): HOW TO PROCEED WITH TROUBLESHOOTING

HINT
* Use the following procedure to troubleshoot the smart access system with push-button start.
* *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. CUSTOMER PROBLEM ANALYSIS

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

(a) Measure the battery voltage with the power switch off.

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 CAN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the CAN communication system is functioning normally.

Result:





B -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting
A -- Continue to next step.

5. INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM (LIN)*

(a) Use the Techstream to check if the LIN communication system (LIN) is functioning normally Reading and Clearing Diagnostic Trouble Codes.

Result:





B -- GO TO LIN COMMUNICATION SYSTEM LIN Communication System
A -- Continue to next step.

6. CHECK FOR DTC*

(a) Check for DTCs and note any codes that are output.

(b) Clear the DTCs.

(c) Recheck for DTCs. Based on the DTCs output, try to cause the same engine immobilizer system DTC, wireless door lock control system DTC or smart access system with push-button start (for start function) DTC to be output by simulating the symptoms indicated by the DTCs.

Result:





B -- GO TO ENGINE IMMOBILIZER SYSTEM Engine Immobilizer System

C -- GO TO WIRELESS DOOR LOCK CONTROL SYSTEM Smart Access System With Push-Button Start (for Start Function)

D -- GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function) Wireless Door Lock Control System
A -- Continue to next step.

7. CHECK ELECTRICAL KEY TRANSMITTER

(a) Confirm that the entry function operates normally for all registered keys Operation Check.

HINT
For vehicles with a key (for card type), confirm operation of both the key (for card type) and keys (for standard).

NEXT -- Continue to next step.

8. PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table Problem Symptoms Table.

Result:





B -- Go to step 10
A -- Continue to next step.

9. OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check Operation Check

(b) Data List / Active Test Smart Access System With Push-Button Start (for Entry Function)

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

NEXT -- Continue to next step.

10. REPAIR OR REPLACEMENT

NEXT -- Continue to next step.

11. CONFIRMATION TEST

NEXT -- END