How To Proceed With Troubleshooting

THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function): HOW TO PROCEED WITH TROUBLESHOOTING

HINT
* Use these procedures to troubleshoot the smart key system.
* *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

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

NEXT -- Continue to next step.

3. CHECK 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.

4. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

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

Result





B -- GO TO LIN COMMUNICATION SYSTEM Initial Inspection and Diagnostic Overview
A -- Continue to next step.

5. CHECK FOR DTC*

(a) Check for DTCs. Based on the DTCs output, try to cause the same steering lock system DTC, engine immobiliser system DTC or smart key system (for Entry Function) DTC to be stored by reproducing the symptoms indicated by the DTC.

Result





B -- GO TO STEERING LOCK SYSTEM How to Proceed With Troubleshooting

C -- GO TO ENGINE IMMOBILISER SYSTEM Engine Immobiliser System (w/ Smart Key System)

D -- GO TO DIAGNOSTIC TROUBLE CODE CHART Smart Key System (for Entry Function)
A -- Continue to next step.

6. PROBLEM SYMPTOMS TABLE

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

Result





B -- Go to step 8
A -- Continue to next step.

7. OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check Operation Check.

(b) Data List / Active Test Smart Key System (for Entry Function).

(c) Terminals of ECU Smart Key System (for Entry Function).

NEXT -- Continue to next step.

8. REPAIR OR REPLACEMENT

NEXT -- Continue to next step.

9. CONFIRMATION TEST

NEXT -- END