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 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.

1. READ VALUE OF TECHSTREAM (STARTER SIGNAL) 
   1. Connect Techstream to the DLC3.
   2. Turn the ignition switch to the ON position and turn the tester on.
   3. On the tester, select the following menu items: Powertrain / Engine and ECT / Data List / Starter Signal.
   4. Check the value displayed on the tester when the ignition switch is turned to the ON and START positions.

      OK 

      TESTER VALUES
      
      

      Ignition Switch Positions	ON	START
      STARTER SIG	OFF	ON

   OK: REPLACE ECM 

   NG: Go to next step 

2. INSPECT PARK/NEUTRAL POSITION SWITCH OR CLUTCH PEDAL SWITCH 
   1. Inspect the Park/Neutral Position (PNP) switch. (For A/T models)
      1. Disconnect the P1 PNP switch connector.
      Fig 1: Identifying PNP Switch Connector Terminals
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Check the resistance when the transmission gear selector lever is moved to each position.

         Standard resistance 

         TESTER CONNECTIONS AND SPECIFIED CONDITIONS
         
         

         Gear Selector Lever Positions	Tester Connections	Specified Conditions
         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

      3. Reconnect the PNP switch connector.
   2. Inspect the clutch pedal switch. (For M/T models)
      1. Disconnect the C10 clutch pedal switch connector.
      Fig 2: Identifying C10 Clutch Pedal Switch Connector
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Check the resistance when the clutch pedal switch is ON and OFF.

         Standard resistance 

         TESTER CONNECTIONS AND SPECIFIED CONDITIONS
         
         

         Ignition Switch Positions	Tester Connections	Specified Conditions
         ON (pushed)	1 - 2	Below 1 Ω
         OFF (free)	1 - 2	10 kΩ or higher

      3. Reconnect the clutch pedal switch connector.

   NG: REPLACE PARK / NEUTRAL POSITION SWITCH OR CLUTCH PEDAL SWITCH (GO TO STEP 3 AFTER REPLACEMENT) 

   OK: Go to next step 

3. READ VALUE OF TECHSTREAM (STARTER SIGNAL) 
   1. Connect Techstream to the DLC3.
   2. Turn the ignition switch to the ON position and turn the tester on.
   3. On the tester, select the following menu items: Powertrain / Engine and ECT / Data List / Starter Signal.
   4. Check the value displayed on the tester when the ignition switch is turned to the ON and START positions.

      OK 

      TESTER VALUES
      
      

      Ignition Switch Positions	ON	START
      STARTER SIG	OFF	ON

   OK: SYSTEM IS OK 

   NG: Go to next step 

4. INSPECT IGNITION OR STARTER SWITCH ASSEMBLY 
   1. Disconnect the I11 ignition switch connector.
   Fig 3: Identifying Ignition Switch Connector Terminals
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Check the resistance.

      Standard resistance 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS
      
      

      Ignition Switch Positions	Tester Connections	Specified Conditions
      LOCK	All Terminals	10 kΩ or higher
      ACC	1-3	Below 1 Ω
      ON	1-2, 1-3, 2-3, 5-6	Below 1 Ω
      START	1-2, 4-5, 4-6, 5-6	Below 1 Ω

   3. Reconnect the ignition switch connector.

   NG: REPLACE IGNITION OR STARTER SWITCH ASSEMBLY (GO TO STEP 5 AFTER REPLACEMENT) 

   OK: Go to next step 

5. READ VALUE OF TECHSTREAM (STARTER SIGNAL) 
   1. Connect Techstream to the DLC3.
   2. Turn the ignition switch to the ON position and turn the tester on.
   3. On the tester, select the following menu items: Powertrain / Engine and ECT / Data List / Starter Signal.
   4. Check the value displayed on the tester when the ignition switch is turned to the ON and START positions.

      OK 

      TESTER VALUES
      
      

      Ignition Switch Positions	ON	START
      STARTER SIG	OFF	ON

   OK: SYSTEM IS OK 

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR