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 intelligent tester. 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.

1. READ VALUE OF INTELLIGENT TESTER (STARTER SIGNAL) 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch to the ON position and turn the tester on.
   3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / STARTER SIG.
   4. Check the value displayed on the tester when the ignition switch is turned to the ON position and START position.

      OK 

      TESTER OPERATION AND SPECIFIED CONDITION
      
      

      Ignition Switch Positions	STARTER SIG
      ON	OFF
      START	ON

   OK: CHECK FOR INTERMITTENT PROBLEMS 

   NG: Go to next step 

2. INSPECT PARK/NEUTRAL POSITION SWITCH 
   1. Inspect the Park/Neutral Position (PNP) switch.
      1. Disconnect the P1 PNP switch connector.
      2. Measure the resistance according to the value (s) in the table below.

         Standard resistance 

         STANDARD RESISTANCE SPECIFICATIONS
         
         

         Shift Position	Tester Connection	Specified Condition
         P	2 - 6, 4 - 5	Below 1 Ω
         R	1 - 2	Below 1 Ω
         N	2 - 9, 4 - 5	Below 1 Ω
         D	2 - 7	Below 1 Ω
         2	2 - 3	Below 1 Ω
         L	2 - 8	Below 1 Ω

         Fig 1: Identifying PNP Switch Connector Terminals

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Reconnect the PNP switch connector.

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

   OK: Go to next step 

3. READ VALUE OF INTELLIGENT TESTER (STARTER SIGNAL) 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch to the ON position and turn the tester on.
   3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL /STARTER SIG.
   4. Check the value displayed on the tester when the ignition switch is turned to the ON position and the START position.

      OK 

      TESTER OPERATION AND SPECIFIED CONDITION
      
      

      Ignition Switch Positions	STARTER SIG
      ON	OFF
      START	ON

   OK: SYSTEM OK 

   NG: Go to next step 

4. INSPECT IGNITION SWITCH ASSEMBLY 
   1. Disconnect the 115 ignition switch connector.
   2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE SPECIFICATIONS
      
      

      Switch Condition	Terminal No.	Specified Condition
      LOCK	All Terminals	10 kΩ or higher
      ACC	1 - 3	Below 1 Ω
      ON	1 - 2, 1 - 3, 2 - 3, 5 - 6
      START	4 - 5, 4 - 6, 5 - 6, 1 - 2

      Fig 2: Identifying Ignition Switch Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Reconnect the ignition switch connector.

   NG: REPLACE IGNITION SWITCH ASSEMBLY (GO TO NEXT STEP 5 AFTER REPLACEMENT)  (See REMOVAL )

   OK: Go to next step 

5. READ VALUE OF INTELLIGENT TESTER (STARTER SIGNAL) 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch to the ON position and turn the tester on.
   3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / STARTER SIG.
   4. Check the value displayed on the tester when the ignition switch is turned to the ON position and the START position.

      OK 

      TESTER OPERATION AND SPECIFIED CONDITION
      
      

      Ignition Switch Positions	STARTER SIG
      ON	OFF
      START	ON

   OK: SYSTEM OK 

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (PNP SWITCH - STA TERMINAL OF ECM)