Sfi System Starter Signal Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (STARTER SIGNAL)

CHECK ST RELAY (POWER SOURCE)

INSPECT RELAY (ST)

CHECK HARNESS AND CONNECTOR (ST RELAY - BODY GROUND)

CHECK HARNESS AND CONNECTOR (ST RELAY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)

INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - IGNITION SWITCH)

INSPECT IGNITION SWITCH ASSEMBLY

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT:

This inspection procedure is based on the premise that the engine can crank normally. If the engine cannot crank normally, proceed to the problem symptoms table (HILUX_TGN26 RM000000PDG0NUX.html).

1. Connect the intelligent tester to the DLC3.
   

2. Turn the ignition switch to ON.
   

3. Turn the tester on.
   

4. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal.
   

5. Read the value.
   

   OK:

   Ignition Switch Position	Starter Signal
   ON	OFF
   START	ON

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

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

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   ST relay terminal 1 - Body ground	Engine cranking	11 to 14 V

   HINT:

   The engine does not crank because the relay is not installed.

   Text in Illustration

   *a	Engine Room Relay Block and Junction Block Assembly
   *b	ST Relay

1. Inspect the ST relay (HILUX_TGN26 RM000000WPQ05ZX.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
   ST relay terminal 2- Body ground	Always	Below 1 Ω

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

2. Disconnect the park/neutral position switch assembly connector.
   

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

   Standard Resistance:

   
   

   Tester Connection	Condition	Specified Condition
   ST relay terminal 1 - C26-5 (L)	Always	Below 1 Ω
   ST relay terminal 1 or C26-5 (L) - Body ground	Always	10 kΩ or higher

1. Inspect the park/neutral position switch assembly (HILUX_TGN26 RM000002BKX031X.html).
   

1. Disconnect the park/neutral position switch assembly connector.
   

2. Disconnect the ignition switch assembly connector.
   

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

   Standard Resistance:

   
   

   Tester Connection	Condition	Specified Condition
   C26-4 (B) - G9-7 (ST2)	Always	Below 1 Ω
   C26-4 (B) or G9-7 (ST2) - Body ground	Always	10 kΩ or higher

1. Inspect the ignition switch assembly (HILUX_TGN26 RM00000135X01OX.html).