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

      OK 

      IGNITION SWITCH POSITION
      
      

      Ignition Switch Position	Starter Signal
      ON	OFF
      START	ON

      NG: Go to step 2 

      OK: REPLACE ECM  (See ECM  )

2. INSPECT PARK/NEUTRAL POSITION SWITCH OR CLUTCH START SWITCH 
   1. Inspect the Park/Neutral Position (PNP) switch (For Automatic Transmission models).
      1. Disconnect the PNP switch connector.
      2. Measure the resistance according to the value(s) in the table below.

         Standard Resistance 

         STANDARD RESISTANCE SPECIFICATION
         
         

         Tester Connection	Condition	Specified Condition
         2 - 6, 4 - 5	Gear selector lever position P	Below 1 Ω
         1 - 2	Gear selector lever position R
         2 - 9, 4 - 5	Gear selector lever position N
         2 - 7	Gear selector lever position D
         2 - 3	Gear selector lever position 2
         2 - 8	Gear selector lever position L

      3. Reconnect the PNP switch connector.
         Fig 1: Identifying Park/Neutral Position Switch Connector

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Inspect the clutch start switch (For Manual Transmission models).
      1. Disconnect the clutch start switch connector.
      2. Measure the resistance according to the value(s) in the table below.

         Standard Resistance 

         STANDARD RESISTANCE SPECIFICATION
         
         

         Tester Connection	Switch Position	Specified Condition
         1 - 2	ON (pushed)	Below 1 Ω
         1 - 2	OFF (free)	10 kΩ or higher

      3. Reconnect the clutch start switch connector.

         NG: REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY (THEN CHECK CRANKING HOLDING FUNCTION CIRCUIT)  (See PARK/NEUTRAL POSITION SWITCH )

         Fig 2: Inspecting Clutch Start Switch

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

         OK: Go to Next Step 

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

      OK 

      IGNITION SWITCH POSITION
      
      

      Ignition Switch Position	Starter Signal
      ON	OFF
      START	ON

      NG: Go to step 4 

      OK: END 

4. INSPECT IGNITION OR STARTER SWITCH ASSEMBLY 
   1. Disconnect the ignition switch connector.
   2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION
      
      

      Tester Connection	Switch Condition	Specified Condition
      All Terminals	LOCK	10 kΩ or higher
      2 - 4	ACC	Below 1 Ω
      1 - 2, 1 - 4, 5 - 6	ON
      1 - 3 - 4, 5 - 6 - 7	START

   3. Reconnect the ignition switch connector.

      NG: REPLACE IGNITION OR STARTER SWITCH ASSEMBLY  (See IGNITION SWITCH )

      Fig 3: Identifying Ignition Switch Connector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to Next Step 

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

      OK 

      IGNITION SWITCH POSITION
      
      

      Ignition Switch Position	Starter Signal
      ON	OFF
      START	ON

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: END