ENGINE IMMOBILISER SYSTEM (w/ Entry and Start System) HOW TO PROCEED WITH TROUBLESHOOTING

VEHICLE BROUGHT TO WORKSHOP

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INSPECT BATTERY VOLTAGE

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

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CHECK FOR DTC*

1. Check for DTCs and make a note of any codes that are output Click here.

2. Clear the DTCs Click here.

3. Recheck for DTCs Click here. Based on the DTCs output above, try to cause the output of the same SFI system or ECD system DTC, LIN communication system DTC, steering lock system DTC or engine immobiliser system DTC by simulating the symptoms indicated by the DTC.

   Result

   Result	Proceed to
   DTC is not output	A
   SFI system (for 1GR-FE) DTC is output	B
   SFI system (for 1UR-FE) DTC is output	C
   ECD system (for 1VD-FTV) DTC is output	D
   SFI system (for 3UR-FE) DTC is output	E
   LIN communication system DTC is output	F
   Steering lock system DTC is output	G
   Engine immobiliser system DTC is output	H

   
   

   B

   Go to DIAGNOSTIC TROUBLE CODE CHART Click here

   C

   Go to DIAGNOSTIC TROUBLE CODE CHART Click here

   D

   Go to DIAGNOSTIC TROUBLE CODE CHART Click here

   E

   Go to DIAGNOSTIC TROUBLE CODE CHART Click here

   F

   Go to DIAGNOSTIC TROUBLE CODE CHART Click here

   G

   Go to DIAGNOSTIC TROUBLE CODE CHART Click here

   H

   Go to DIAGNOSTIC TROUBLE CODE CHART Click here

   A

PROBLEM SYMPTOMS TABLE

1. Refer to the problem symptoms table Click here.

   Result

   Result	Proceed to
   Fault is not listed in problem symptoms table	A
   Fault is listed in problem symptoms table	B

   
   

   B

   Go to step 6

   A

OVERALL ANALYSIS AND TROUBLESHOOTING*

1. Data List/Active Test Click here

2. Terminals of ECU Click here

   
   

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ADJUST, REPAIR OR REPLACE

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CONFIRMATION TEST

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