Engine Immobiliser System Engine Does Not Start

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK TRANSPONDER KEY ECU ASSEMBLY (OUTPUT)

REPLACE TRANSPONDER KEY ECU ASSEMBLY

REGISTER ECU COMMUNICATION ID

CHECK WHETHER ENGINE STARTS

REGISTER ECU COMMUNICATION ID

CHECK WHETHER ENGINE STARTS

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

1. Before troubleshooting this symptom, make sure no engine immobiliser system DTCs, SFI system (for 2TR-FE, 2TR-FBE) or ECD system (for 1KD-FTV, 2KD-FTV) DTCs are present. If present, troubleshoot the engine immobiliser system DTCs or blocking system DTCs (w/ Blocking System) first.
   
2. For vehicles with blocking system, refer to "Engine does not Start" (HILUX_TGN26 RM0000044SP00SX.html).
   
3. When replacing the transponder key ECU assembly or ECM, refer to the Service Bulletin.
   

1. Using an oscilloscope, check the waveform.
   

   Measurement Condition

   Item	Content
   Tester Connection	G26-13 (EFIO) - G26-16 (GND)
   Tool Setting	10 V/DIV., 100 ms./DIV.
   Condition	Ignition switch ON

   HINT:

   1. The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
      
   2. Check the waveform when the security indicator light assembly is off (the engine immobiliser system is unset). If the security indicator light assembly does not turn off (the engine immobiliser system cannot be unset), refer to the "Problem Symptoms Table (HILUX_TGN26 RM000000Z36011X.html)".
      

   OK:

   Waveform is output normally (refer to illustration).
   

   Text in Illustration

   *1	Waveform
   *a	Component with harness connected (Transponder Key ECU Assembly)

   Result

   Result	Proceed to
   NG (stuck LOW: 1 V or less)	A
   NG (stuck HI: 10 V)	B
   OK	C

   HINT:

   If replacing the ECM, refer to the procedures below.

   1. for 1KD-FTV: HILUX_TGN26 RM0000013Z0019X.html
      
   2. for 2KD-FTV: HILUX_TGN26 RM0000043H100GX.html
      
   3. for 2TR-FE: HILUX_TGN26 RM000000VW2023X.html
      
   4. for 2TR-FBE: HILUX_TGN26 RM000000VW2024X.html
      

1. Temporarily replace the transponder key ECU assembly with a new one (Refer to the Service Bulletin).
   

1. Register the ECU - ECM communication ID (Refer to the Service Bulletin).
   

1. Check that the engine starts normally.
   

   OK:

   Engine starts normally.
   

   Result

   Result	Proceed to
   OK	A
   NG (for 1KD-FTV)	B
   NG (for 2KD-FTV)	C
   NG (for 2TR-FE)	D
   NG (for 2TR-FBE)	E

1. Register the ECU - ECM communication ID (Refer to the Service Bulletin).
   

1. Check that the engine starts normally.
   

   OK:

   Engine starts normally.
   

   Result

   Result	Proceed to
   OK	A
   NG (for 1KD-FTV)	B
   NG (for 2KD-FTV)	C
   NG (for 2TR-FE)	D
   NG (for 2TR-FBE)	E

   HINT:

   If replacing the ECM, refer to the procedures below.

   1. for 1KD-FTV: See page
      
   2. for 2KD-FTV: See page
      
   3. for 2TR-FE: See page
      
   4. for 2TR-FBE: See page