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 (see PROBLEM SYMPTOMS TABLE ).
• Read freeze frame data using the Intelligent tester or 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 OF INTELLIGENT TESTER OR TECHSTREAM (STARTER SIGNAL) 
   1. Connect the Intelligent tester or Techstream to the DLC3.
   2. Turn the engine switch on (IG) and turn the tester ON.
   3. Enter the following menus:
      1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / STARTER SIG.
      2. Techstream - Select: Powertrain / Engine / Data List / All Data / Starter Signal.
   4. Check the value displayed on the tester when the engine switch is turned on (IG) and the engine is started.

      OK 

      ENGINE SWITCH CONDITION CHART
      
      

      Engine Switch Condition	Tester Display
      on (IG)	OFF
      ENGINE START	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 E49 PNP switch connector.
      2. Measure the resistance according to the value(s) in the table below.

         Standard resistance 

         PARK / NEUTRAL POSITION SWITCH ASSEMBLY
         
         

         Tester Connection	Gear Selector Lever Position	Specified Condition
         4 - 5	P	Below 1 Ω
         4 - 5	N	Below 1 Ω

         Fig 1: Identifying E49 PNP Switch Connector

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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