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 the intelligent tester. The TCM 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 OF INTELLIGENT TESTER (STARTER SIGNAL) 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the engine switch on (IG) and turn the tester on.
   3. Enter the following menus: DIAGNOSIS / OBD / MOBD / ECT / DATA LIST.
   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 AND STARTER SIGNAL REFERENCE
      
      

      Engine Switch Condition	ON (IG)	ENGINE START
      STARTER SIG	OFF	ON

   OK: Go to step  3

   NG: Go to Next Step 

2. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY 
   1. Inspect the Park / Neutral Position (PNP) switch.
      1. Disconnect the B36 switch connector.
      2. Measure the resistance according to the value(s) in the table below.

         Standard resistance 

         RESISTANCE SPECIFICATION
         
         

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

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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

3. CHECK HARNESS AND CONNECTOR 
   1. Disconnect the B40 switch connector.
   2. Measure the voltage according to the value(s) in the table below when the shift lever is P or N position.

      Standard voltage 

      VOLTAGE SPECIFICATION
      
      

      Tester Connection	Specified Condition
      8 - 10	Below 2 V

   3. Connect the B40 switch connector.
   Fig 2: TCM Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: REPLACE TCM (See  REMOVAL   )