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 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 engine switch on (IG) and turn the Techstream ON.
   3. Enter the following menus: Powertrain/Engine/Data List/All Data/Starter Signal.
   4. Check the value displayed on the Techstream when the engine switch is turned on (IG) and the engine is started.

   OK 

   TESTER DISPLAY REFERENCE
   
   

   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 

Fig 1: Identifying E49 Park/Neutral Position (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 )