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 (See PROBLEM SYMPTOMS TABLE  ).
• Read freeze frame data using a Techstream. Freeze frame data record 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. PERFORM ACTIVE TEST USING TECHSTREAM (STARTER RELAY) 
   1. Connect to a Techstream the DLC3.
   2. Turn the ignition switch to ON.
   3. Turn the tester ON.
   4. Select the following menu items: Powertrain / Engine and ECT / Active test / Activate the Starter Relay.
   5. Select the following monitor item: Starter Signal.
   6. Read 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

      Result 

      RESULT REFERENCE
      
      

      Result	Proceed to
      Within standard range	A
      Outside standard range	B

   B: Go to step 2 

   A : CHECK FOR INTERMITTENT PROBLEMS  (See CHECK FOR INTERMITTENT PROBLEMS  )

2. READ VALUE USING TECHSTREAM (STARTER SIGNAL) 
   1. Inspect the Park/Neutral Position (PNP) switch (for automatic transaxle models).
      1. Disconnect the park/neutral position switch connector.
      2. Connect a Techstream to the DLC3.
      3. Turn the ignition switch to ON.
      4. Turn the tester ON.
      5. Select the following menu items: Powertrain / Engine and ECT / Data List / Starter Signal.
      6. Read the value displayed on the tester when the ignition switch is turned to ON.

         Result 

         RESULT REFERENCE
         
         

         Starter Signal	Proceed to
         ON	A
         OFF	B

         Fig 1: Identifying Park/Neutral Position Switch Connector Terminals

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      7. Reconnect the park/neutral position switch connector.
   2. Inspect the clutch start switch circuit (for manual transaxle models).
      1. Disconnect the clutch start switch connector.
      2. Connect a Techstream to the DLC3.
      3. Turn the ignition switch to ON.
      4. Turn the tester ON.
      5. Select the following menu items: Powertrain / Engine and ECT / Data List / Starter Signal.
      6. Read the value displayed on the tester when the ignition switch is turned to ON.

         Result 

         RESULT REFERENCE
         
         

         Starter Signal	Proceed to
         ON	A
         OFF	B

         Fig 2: Identifying Clutch Start Switch Connector Terminals

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      7. Reconnect the clutch start switch connector.

   B:  Go to step  4

   A: Go to next step 

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

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      VOLTAGE SPECIFICATION
      
      

      Tester Connection	Switch Condition	Specified Condition	Proceed to
      A20-48 (STA) - Body ground	Ignition switch ON	11 to 14 V	A
      		Below 1.5 V	B

   5. Reconnect the clutch start switch or park/neutral position switch connector.
   6. Reconnect the ECM connector.

   B : REPLACE ECM  (See REMOVAL  )

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

4. INSPECT CLUTCH START SWITCH OR PARK/NEUTRAL POSITION SWITCH 
   1. Inspect the clutch start switch circuit (for manual transaxle models).
      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 Position	Specified Condition
         1 - 2	OFF (free)	10 kΩ or higher

      3. Reconnect the clutch start switch connector.

         Result 

         RESULT REFERENCE
         
         

         Result	Proceed to
         Within standard range	A
         Outside standard range	B

         Fig 4: Identifying Clutch Start Switch Connector Terminals

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Inspect the Park/Neutral Position (PNP) switch (for automatic transaxle models).
      1. Disconnect the park/neutral position switch connector.
      2. Measure the resistance according to the value(s) in the table below.

         Standard resistance 

         RESISTANCE SPECIFICATION
         
         

         Tester Connection	Shift Selector Lever Position	Specified Condition
         4 - 5	Except P, N	10 kΩ or higher
         2 - 5	P	10 kΩ or higher
         	R
         	N
         	D
         	2
         	L

         Fig 5: Identifying Park/Neutral Position Switch Connector Terminals

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Reconnect the park/neutral position switch connector.

         Result 

         RESULT REFERENCE
         
         

         Result	Proceed to
         Within standard range	A
         Outside standard range 4 - 5	B
         Outside standard range 2 - 5	C

   B : REPLACE CLUTCH START SWITCH OR PARK/NEUTRAL POSITION SWITCH AND GO TO STEP 5  (See REMOVAL )

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

   A: Go to next step 

5. INSPECT IGNITION SWITCH 
   1. Disconnect the ignition 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
      4 (AM1) - 7 (ST2)	ON position	10 kΩ or higher
      5 (AM2) - 7 (ST2)

   3. Reconnect the ignition switch connector.

   NG: REPLACE IGNITION SWITCH  (See REMOVAL )

   Fig 6: Identifying Ignition Switch Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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