Smart Key System (for Start Function)

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

HINT
* Use these procedures to troubleshoot the push-button start function.
* *: 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. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

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

Result





B -- GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) CAN Communication System
A -- Continue to next step.

4. CHECK FOR DTC*

(a) Check for DTCs and note any stored DTCs Smart Key System (for Start Function).

(b) Clear the DTCs.

(c) Check whether the same DTC(s) relevant to the SFI system or smart key system recurs by reproducing the symptoms indicated by the noted DTC(s) in the first step above.

Result





B -- GO TO SFI SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) SFI System

C -- GO TO STEP 7
A -- Continue to next step.

5. PROBLEM SYMPTOMS TABLE

Result





B -- GO TO STEP 7
A -- Continue to next step.

6. OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU Smart Key System (for Start Function)

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

NEXT -- Continue to next step.

7. ADJUST, REPAIR OR REPLACE

NEXT -- Continue to next step.

8. CONFIRMATION TEST

NEXT -- END