Theft Deterrent System Starter Relay Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT ST RELAY

INSPECT IGNITION SWITCH ASSEMBLY

CHECK VEHICLE TYPE

INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (ST RELAY - BATTERY)

CHECK HARNESS AND CONNECTOR (THEFT WARNING ECU - BATTERY AND BODY GROUND)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

1. If the engine cranks but does not start, there is a problem with the SFI system*1 or ECD system*2. If this is the case, refer to SFI System*1 or ECD System*2 and perform troubleshooting.
   
1. *1: for 2TR-FE, 2TR-FBE, 1GR-FE
   
2. *2: for 1KD-FTV, 2KD-FTV
   
2. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
   
3. When replacing the theft warning ECU assembly, refer to the registration procedures (HILUX_TGN26 RM000000Z4Z01KX.html).
   

1. Remove the ST relay from the engine room relay block and junction block assembly.
   

2. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   3 - 5	Battery voltage is not applied to terminals 1 and 2	10 kΩ or higher
   	Battery voltage is applied to terminals 1 and 2	Below 1 Ω

   Text in Illustration

   *A	for 2TR-FE, 2TR-FBE, 1GR-FE
   *B	for 1KD-FTV, 2KD-FTV

1. Remove the ignition switch assembly.
   

   1. for 2TR-FE: HILUX_TGN26 RM00000135Z01BX.html
      
   2. for 2TR-FBE: HILUX_TGN26 RM00000135Z01GX.html
      
   3. for 1GR-FE: HILUX_TGN26 RM00000135Z01OX.html
      
   4. for 1KD-FTV: HILUX_TGN26 RM0000013XF01HX.html
      
   5. for 2KD-FTV: HILUX_TGN26 RM0000013XF01IX.html
      

2. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Switch Condition	Specified Condition
   5 (AM2) - 7 (ST2)	Off, ACC, ON	10 kΩ or higher
   	Start	Below 1 Ω

   HINT:

   If replacing the park/neutral position switch assembly, refer to the procedures below.
   1. for 2TR-FE: HILUX_TGN26 RM00000135Z01BX.html
      
   2. for 2TR-FBE: HILUX_TGN26 RM00000135Z01GX.html
      
   3. for 1GR-FE: HILUX_TGN26 RM00000135Z01OX.html
      
   4. for 1KD-FTV: HILUX_TGN26 RM0000013XF01HX.html
      
   5. for 2KD-FTV: HILUX_TGN26 RM0000013XF01IX.html
      

1. Check the vehicle type.
   

   Result

   Result	Proceed to
   for Automatic Transmission	A
   for Manual Transmission	B

1. Remove the park/neutral position switch assembly.
   

   1. for A750F: HILUX_TGN26 RM0000010NC06DX.html
      
   2. for A340F: HILUX_TGN26 RM0000010NC05IX.html
      
   3. for A343F: HILUX_TGN26 RM0000010NC05LX.html
      
   4. for A343E: HILUX_TGN26 RM0000010NC05PX.html
      

2. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Switch Condition	Specified Condition
   4 - 5	Shift lever in P or N	Below 1 Ω
   	Shift lever not in P and N	10 kΩ or higher

   Result

   Result	Proceed to
   OK	A
   NG (for A750F)	B
   NG (for A340F)	C
   NG (for A343F)	D
   NG (for A343E)	E

1. Remove the ST relay from the engine room relay block.
   

2. Measure the voltage according to the value(s) in the table below.
   

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   Relay block ST relay terminal 5 - Body ground	Always	11 to 14 V

   Text in Illustration

   *A	for 2TR-FE, 2TR-FBE, 1GR-FE
   *B	for 1KD-FTV, 2KD-FTV
   *a	Front view of wire harness connector (to ST Relay)

1. Disconnect the G29 theft warning ECU assembly connector.
   

2. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   G29-1 (E) - Body ground	Always	Below 1 Ω

3. Measure the voltage according to the value(s) in the table below.
   

   Standard Voltage:

   Tester Connection	Switch Condition	Specified Condition
   G29-12 (SRLY) - Body ground	Ignition switch off	Below 1 V
   	Ignition switch ON	11 to 14 V