Engine Immobilizer System

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

HINT
* Use these procedures to troubleshoot the engine immobilizer system.
* *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. INSPECT AUXILIARY BATTERY VOLTAGE

Standard Voltage:

11 to 14 V

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

NEXT -- Continue to next step.

3. TURN POWER SWITCH ON (IG)

HINT
If the power switch cannot be turned on (IG), communication with the Techstream can be confirmed by connecting the Techstream to the vehicle and turning a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins.

NEXT -- Continue to next step.

4. CHECK 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 How to Proceed With Troubleshooting
A -- Continue to next step.

5. CHECK 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 DTC*

(a) Check for DTCs and make a note of any codes that are output Engine Immobilizer System.

(b) Based on the DTCs output above, proceed to each diagnostic procedure.

Result





B -- Go to DIAGNOSTIC TROUBLE CODE CHART Hybrid Control System

C -- Go to DIAGNOSTIC TROUBLE CODE CHART Electronic Shift Lever System

D -- Go to DIAGNOSTIC TROUBLE CODE CHART Engine Immobilizer System
A -- Continue to next step.

7. PROBLEM SYMPTOMS TABLE

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

Result





B -- Go to step 9
A -- Continue to next step.

8. OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Check Data List / Active Test Engine Immobilizer System.

(b) Check Terminals of ECU Engine Immobilizer System.

NEXT -- Continue to next step.

9. ADJUST, REPAIR OR REPLACE

NEXT -- Continue to next step.

10. CHECK FOR DTC*

(a) Clear the DTCs Engine Immobilizer System.

(b) Check for DTCs Engine Immobilizer System.

HINT
Before checking for DTCs, perform the "DTC Output Confirmation Operation" of each diagnostic procedure Engine Immobilizer System.

Result





B -- Go to DIAGNOSTIC TROUBLE CODE CHART Engine Immobilizer System

A -- END