How to Proceed With Troubleshooting

THEFT DETERRENT / KEYLESS ENTRY: REMOTE ENGINE STARTER SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HINT
* Use the following procedure to troubleshoot the remote engine starter system.
* *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. CUSTOMER PROBLEM ANALYSIS

HINT
* When 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 problem analysis:





NEXT -- Continue to next step.

3. INSPECT BATTERY VOLTAGE

(a) Measure the 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 CAN COMMUNICATION SYSTEM*

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

Result:





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

5. INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the LIN communication system 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 DTCS (SMART ACCESS SYSTEM WITH PUSH-BUTTON START (FOR ENTRY FUNCTION))*

(a) Clear the DTCs Smart Access System With Push-Button Start (For Entry Function).

(b) Recheck for DTCs.

Result:





B -- GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (FOR ENTRY FUNCTION) Smart Access System With Push-Button Start (For Entry Function)
A -- Continue to next step.

7. CHECK FOR DTCS (SMART ACCESS SYSTEM WITH PUSH-BUTTON START (FOR START FUNCTION))*

(a) Clear the DTCs Smart Access System With Push-Button Start (For Start Function).

(b) Recheck for DTCs.

Result:





B -- GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (FOR START FUNCTION) Smart Access System With Push-Button Start (For Start Function)
A -- Continue to next step.

8. CHECK FOR DTCS (ENGINE IMMOBILISER SYSTEM)*

(a) Clear the DTCs Engine Immobilizer System.

(b) Recheck for DTCs.

Result:





B -- GO TO ENGINE IMMOBILISER SYSTEM Engine Immobilizer System
A -- Continue to next step.

9. CHECK FOR DTCS (SFI SYSTEM)*

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(b) Recheck for DTCs.

Result:





B -- GO TO SFI SYSTEM SFI System
A -- Continue to next step.

10. PROBLEM SYMPTOMS TABLE

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

Result:





B -- Go to step 12
A -- Continue to next step.

11. OVERALL ANALYSIS AND TROUBLESHOOTING

(a) Terminals of ECU Pinout Values and Diagnostic Parameters

(b) Operation Check Operation Check

(c) Diagnosis System* Diagnosis System

(d) Data List / Active Test* Scan Tool Testing and Procedures

NEXT -- Continue to next step.

12. REPAIR OR REPLACE

NEXT -- Continue to next step.

13. CONFIRMATION TEST

NEXT -- END