Inspection Procedure

HINT:

• The following troubleshooting flowchart is based on the premise that the engine is cranked normally. If the engine does not crank, proceed to the PROBLEM SYMPTOMS TABLE  .
• Read freeze frame data using Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction (See DTC CHECK/CLEAR  ).

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

      OK 

      ENGINE START CONDITION
      
      

      Ignition Switch Condition	ON	ENGINE START
      STARTER SIG	OFF	ON

      OK: REPLACE ECM (See  REMOVAL   ) 

      NG: Go to Next Step 

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

         Standard resistance 

         RESISTANCE SPECIFIED CONDITIONS
         
         

         Gear Selector Lever Position	Tester Connection	Specified Condition
         P	4 - 9	Below 1 Ω
         N	4 - 9	Below 1 Ω

      3. Reconnect the PNP switch connector.

         Result 

         RESULT CHART
         
         

         Result	Proceed to
         OK (w/o Smart key system)	A
         OK (w/ Smart key system)	B
         NG	C

         Fig 1: Identifying B13 Park/Neutral Position Switch Connector Terminals

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

         B: CHECK CRANKING HOLDING FUNCTION CIRCUIT (See  CRANKING HOLDING FUNCTION CIRCUIT   ) 

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

         A: Go to Next Step 

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

      Standard resistance 

      RESISTANCE SPECIFIED CONDITIONS
      
      

      Switch Condition	Tester Connection	Specified Condition
      LOCK	3-4, 5-7	10 kΩ or higher
      START	3-4, 5-7	Below 1 Ω

   3. Reconnect the ignition switch connector.

      NG: REPAIR OR REPLACE IGNITION SWITCH ASSEMBLY 

      Fig 2: Identifying D30 Ignition Switch Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to Next Step 

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

      OK 

      ENGINE START CONDITION
      
      

      Ignition Switch Condition	ON	ENGINE START
      STARTER SIG	OFF	ON

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: SYSTEM IS OK