Inspection Procedure

HINT:

• The following troubleshooting flowchart is based on the premise that the engine is cranked normally. If the engine will not crank, proceed to the PROBLEM SYMPTOMS TABLE .
• Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. READ VALUE USING TECHSTREAM (STARTER SIGNAL) 
   1. Connect the Techstream to the DLC3.
   2. Turn the ignition switch to ON.
   3. Turn the Techstream ON.
   4. Select the following menu items: Powertrain / Engine and ECT / Data List / All Data / Starter Signal.
   5. Check the value displayed on the tester when the ignition switch is turned to the ON and START positions.

      OK 

      IGNITION SWITCH POSITION AND STARTER SIGNAL REFERENCE
      
      

      Ignition Switch Position	Starter Signal
      ON	OFF
      START	ON

   NG: Go to step 2 

   OK :  CHECK FOR INTERMITTENT PROBLEMS 

2. READ VALUE USING TECHSTREAM (STARTER SIGNAL) 
   1. Disconnect the clutch start switch or the Park/Neutral Position (PNP) switch connector.
   2. Connect the Techstream to the DLC3.
   3. Turn the ignition switch to ON.
   4. Turn the Techstream ON.
   5. Select the following menu items: Powertrain / Engine and ECT / Data List / All Data / Starter Signal.
   6. Check the value displayed on the Techstream when the ignition switch is turned to ON.

      Result 

      RESULT REFERENCE
      
      

      Starter Signal	Proceed to
      Remains ON	A
      OFF (M/T models)	B
      OFF (A/T models)	C

   7. Reconnect the clutch start switch or the Park/Neutral Position (PNP) switch connector.
      Fig 1: Identifying Clutch Start Switch And Park/Neutral Position Switch Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   B:  Go to step  4

   C:  Go to step  8

   A: Go to next step 

3. INSPECT ECM (STA TERMINAL VOLTAGE) 
   1. Disconnect the clutch start switch or the Park/Neutral Position (PNP) switch connector.
   2. Disconnect the ECM connector.
   3. Turn the ignition switch to ON.
   4. Measure the voltage according to the value(s) in the table below.
      Fig 2: Identifying ECM Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard voltage 

      VOLTAGE SPECIFICATION
      
      

      Tester Connection	Switch Condition	Specified Condition	Proceed to
      STA (A21-48) - Body ground	Ignition switch ON	11 to 14 V	A
      		Below 1.5 V	B

   5. Reconnect the clutch start switch or the Park/Neutral Position (PNP) switch connector.
   6. Reconnect the ECM connector.

   B : REPLACE ECM  (See REMOVAL )

   A : REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - ST RELAY - CLUTCH START SWITCH OR PNP SWITCH) 

4. INSPECT CLUTCH START SWITCH 
   1. Disconnect the clutch start switch connector.
   2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION
      
      

      Tester Connection	Switch Condition	Specified Condition
      1 - 2	OFF (free)	10 kΩ or higher

      Result 

      RESULT REFERENCE
      
      

      Result	Proceed to
      Outside standard range	A
      Within standard range	B

   3. Reconnect the clutch start switch connector.
   Fig 3: Identifying Clutch Start Switch Connector Terminals
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   B:  Go to step  6

   A: Go to next step 

5. REPLACE CLUTCH START SWITCH 
   1. Replace the clutch start switch (See REMOVAL ).

   NEXT 

6. INSPECT IGNITION SWITCH 
   1. Remove the ignition switch.
   2. Measure the resistance according to the value(s) in the table below.
      Fig 4: Inspecting Ignition Switch

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance 

      RESISTANCE SPECIFICATION
      
      

      Tester Connection	Switch Condition	Specified Condition
      All Terminals	LOCK	10 kΩ or higher
      2 (AM1) - 3 (ACC)	ACC	Below 1 Ω
      2 (AM1) - 3 (ACC) - 4 (IG1)	ON
      7 (AM2) - 6 (IG2)
      2 (AM1) - 4 (IG1) - 1 (ST1)	START
      7 (AM2) - 6 (IG2) - 8 (ST2)

   3. Reinstall the ignition switch.

   NG : REPLACE IGNITION SWITCH  (See REMOVAL )

   OK: Go to next step 

7. INSPECT ECM (NSW TERMINAL VOLTAGE) 
   1. Disconnect the clutch start switch connector.
   2. Disconnect the ECM connector.
   3. Turn the ignition switch to ON.
   4. Measure the voltage according to the value(s) in the table below.
      Fig 5: Identifying ECM Connector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard voltage 

      VOLTAGE SPECIFICATION
      
      

      Tester Connection	Switch Condition	Specified Condition	Proceed to
      NSW (B33-452) - Body ground	Ignition switch ON	11 to 14 V	A
      		Below 1.5 V	B

   5. Reconnect the clutch start switch connector.
   6. Reconnect the ECM connector.

   B : REPLACE ECM  (See REMOVAL )

   A : REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION SWITCH - CLUTCH START SWITCH - ECM) 

8. INSPECT PARK/NEUTRAL POSITION SWITCH 
   1. Disconnect the Park/Neutral Position (PNP) switch connector.
   2. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for short) 

      RESISTANCE SPECIFICATION - CHECK FOR SHORT
      
      

      Tester Connection	Condition	Specified Condition
      4 - 5	Shift lever position except P and N	10 kΩ or higher
      2 - 5	All shift lever positions (P, R, N, D and S)	10 kΩ or higher

      Result 

      RESULT REFERENCE
      
      

      Result	Proceed to
      Short between 4 and 5	A
      Short between 2 and 5	B
      Within standard range	C

   3. Reconnect the PNP switch connector.
      Fig 6: Identifying Park/Neutral Position Switch Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   B : REPLACE PARK/NEUTRAL POSITION SWITCH  (See REMOVAL )

   C:  Go to step  10

   A: Go to next step 

9. REPLACE PARK/NEUTRAL POSITION SWITCH 
   1. Replace park/neutral position switch (See REMOVAL ).

   NEXT 

10. INSPECT IGNITION SWITCH 
    1. Remove the ignition switch.
    2. Measure the resistance according to the value(s) in the table below.
       Fig 7: Inspecting Ignition Switch

       Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

       Standard resistance 

       RESISTANCE SPECIFICATION
       
       

       Tester Connection	Switch Condition	Specified Condition
       All Terminals	LOCK	10 kΩ or higher
       2 (AM1) - 3 (ACC)	ACC	Below 1 Ω
       2 (AM1) - 3 (ACC) - 4 (IG1)	ON
       7 (AM2) - 6 (IG2)
       2 (AM1) - 4 (IG1) - 1 (ST1)	START
       7 (AM2) - 6 (IG2) - 8 (ST2)

    3. Reinstall the ignition switch.

    NG : REPLACE IGNITION SWITCH  (See REMOVAL )

    OK: Go to next step 

11. INSPECT ECM (NSW TERMINAL VOLTAGE) 
    1. Disconnect the Park/Neutral Position (PNP) switch connector.
    2. Disconnect the ECM connector.
    3. Turn the ignition switch to ON.
    4. Measure the voltage according to the value(s) in the table below.
       Fig 8: Identifying ECM Connector

       Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

       Standard voltage 

       VOLTAGE SPECIFICATION
       
       

       Tester Connection	Switch Condition	Specified Condition	Proceed to
       NSW (B33-452) - Body ground	Ignition switch ON	11 to 14 V	A
       		Below 1.5 V	B

    5. Reconnect the PNP switch connector.
    6. Reconnect the ECM connector.

    B : REPLACE ECM  (See REMOVAL )

    A : REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION SWITCH - PNP SWITCH - ECM)