Inspection Procedure

HINT:

• If DTC P0013 is output, check the VVT system (for exhaust camshaft) circuit.
• Read freeze frame data using the 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. PERFORM ACTIVE TEST USING USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE) 
   1. Connect the Techstream to the DLC3.
   2. Start the engine.
   3. Turn the Techstream on.
   4. Turn the A/C switch on.
   5. Enter the following menus: Powertrain/Engine/Active Test/Control the VVT Exhaust Linear (Bank 1).
   6. Check the engine speed while operating the camshaft timing oil control valve assembly (for exhaust camshaft) using the Techstream.

      Result 

      TECHSTREAM OPERATION CHART
      
      

      Techstream Operation	Specified Condition
      0% (OFF)	Normal engine speed
      127% (ON)	Engine idles roughly or stalls (soon after camshaft timing oil control valve assembly switched from OFF to ON)

      HINT:

      If the result is not acceptable, cool the engine and perform the Active Test again.

   7. Start the engine when the engine coolant temperature is 30°C (86°F) or less.
   8. Turn the Techstream on.
   9. Turn the A/C switch on.
   10. Enter the following menus: Powertrain/Engine/Active Test/Control the VVT Exhaust Linear (Bank 1).
   11. Check the engine speed while operating the camshaft timing oil control valve assembly (for exhaust camshaft) using the Techstream when the engine coolant temperature is 50°C (122°F) or less.

       Result 

       TECHSTREAM OPERATION CHART
       
       

       Techstream Operation	Specified Condition
       0% (OFF)	Normal engine speed
       127% (ON)	Engine idles roughly or stalls (soon after camshaft timing oil control valve assembly switched from OFF to ON)

       NG: Go to step 2 

       OK: CHECK FOR INTERMITTENT PROBLEMS  (See CHECK FOR INTERMITTENT PROBLEMS )

2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT) 
   1. Remove the camshaft timing oil control valve assembly (for exhaust camshaft).
   2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Condition	Specified Condition
      1 - 2	20°C (68°F)	6.9 to 7.9 Ω

      Fig 1: Inspecting Camshaft Timing Oil Control Valve Assembly

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Connect the positive (+) battery terminal to terminal 1 and connect the negative (-) battery terminal to terminal 2. Check the valve operation.

      OK: 

      Valve moves quickly. 

   4. Reinstall the camshaft timing oil control valve assembly (for exhaust camshaft).

      NG: REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT)  (See REMOVAL )

      Fig 2: Connecting Battery Terminals To Camshaft Timing Oil Control Valve Assembly

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

3. CHECK HARNESS AND CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY - ECM) 
   1. Disconnect the camshaft timing oil control valve assembly (for exhaust camshaft) connector.
   2. Disconnect the ECM connector.
   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open) 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Condition	Specified Condition
      B64-1 - B50-25 (OE1+)	Always	Below 1 Ω
      B64-2 - B50-19 (OE1-)	Always	Below 1 Ω

      Standard Resistance (Check for Short) 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Condition	Specified Condition
      B64-1 or B50-25 (OE1+) - Body ground	Always	10 kΩ or higher
      B64-2 or B50-19 (OE1-) - Body ground	Always	10 kΩ or higher

   4. Reconnect the camshaft timing oil control valve assembly (for exhaust camshaft) connector.
   5. Reconnect the ECM connector.

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY - ECM) 

      Fig 3: Identifying Camshaft Timing Oil Control Valve Assembly And ECM Connector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: REPLACE ECM  (See REMOVAL )