Inspection Procedure

HINT:

• If DTC P0010 is displayed, check the intake camshaft circuit for the right bank VVT system.
• Bank 1 refers to the bank that includes cylinder No. 1.
• If DTC P0020 is displayed, check the intake camshaft circuit for the left bank VVT system.
• Bank 2 refers to the bank that does not include cylinder No. 1.
• 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 (See DTC CHECK/CLEAR  ).

1. PERFORM ACTIVE TEST USING CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV) 
   1. Connect Techstream to the DLC3.
   2. Start the engine and turn the tester on.
   3. Warm up the engine.
   4. On the tester, enter the following menus: Powertrain/Engine/Active Test/Control the VVT System (Bank 1) or Control the VVT System (Bank 2).
   5. Check the engine speed while operating the Oil Control Valve (OCV) using the tester.

      OK 

      ENGINE SPEED CONDITIONS
      
      

      Tester Operation	Specified Condition
      OCV OFF	Normal engine speed
      OCV ON	Engine idles roughly or stalls (soon after OCV switched from OFF to ON)

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

      NG: Go to next step 

2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY 
   1. Disconnect the OCV for intake camshaft connector.
   2. Measure the resistance between the terminals of the OCV.

      Standard resistance 

      RESISTANCE SPECIFIED CONDITIONS
      
      

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

   3. Reconnect the OCV connector.

      OK: REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY 

      Fig 1: Measuring Resistance Between Terminals Of OCV

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: Go to next step 

3. CHECK HARNESS AND CONNECTOR (OCV - ECM) 
   1. Disconnect the OCV for intake camshaft connector.
   2. Disconnect the ECM connector.
   3. Measure the resistance between the terminals. Standard resistance (Check for open)
      RESISTANCE SPECIFIED CONDITIONS
      
      

      Tester Connection	Specified Condition
      OC1+ (B50-58) - B44-1	Below 1 Ω
      OC1- (B50-57) - B44-2	Below 1 Ω
      OC2+ (B50-52) - B19-1	Below 1 Ω
      OC2- (B50-51) - B19-2	Below 1 Ω

      Standard resistance (Check for short) 

      RESISTANCE SPECIFIED CONDITIONS
      
      

      Tester Connection	Specified Condition
      OC1+ (B50-58) or B44-1 - Body ground	10 kΩ or higher
      OC1- (B50-57) or B44-2 - Body ground	10 kΩ or higher
      OC2+ (B50-52) or B19-1 - Body ground	10 kΩ or higher
      OC2- (B50-51) or B19-2 - Body ground	10 kΩ or higher

   4. Reconnect the OCV connector.
   5. Reconnect the ECM connector.

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      Fig 2: Identifying Oil Control Valve And B50 ECM Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: REPLACE ECM (See  REMOVAL   )