Inspection Procedure

HINT.

• If DTC P0013 is displayed, check the bank 1 VVT system for exhaust side circuit.
• Bank 1 refers to the bank that includes the No 1 cylinder.
• If DTC P0023 is displayed, check the bank 2 VVT system for exhaust side circuit.
• Bank 2 refers to the bank that does not include the No. 1 cylinder
• 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. CHECK DTC (DTC P0013 OR P0023) 
   1. Connect the Techstream to the DLC3.
   2. Clear DTCs after recording the freeze frame data and DTCs
   3. Turn the engine switch off.
   4. Allow the engine to idle and check for DTCs
   5. Check if P0013 or P0023 is present

      Result 

      RESULT CHART
      
      

      Result	Proceed to
      P0013	A
      P0023	B

   B: Go to step  3

   A: Go to next step 

2. PERFORM ACTIVE TEST USING TECHSTREAM (OIL CONTROL VALVE FOR EXHAUST SIDE OPERATION) 
   1. Connect the Techstream to the DLC3
   2. Start the engine and turn the Techstream ON
   3. Warm up the engine
   4. Enter the following menus Powertrain / Engine / Active Test / Control the VVT Exhaust Linear (Bank 1) Check the engine speed while operating the oil control valve using the Techstream

      OK 

      ENGINE CONDITION TESTER OPERATION CHART
      
      

      Tester Operation	Engine Condition
      0%	Normal engine speed
      100%	Engine idles roughly

   NG: Go to step  4

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

3. PERFORM ACTIVE TEST USING TECHSTREAM (OIL CONTROL VALVE FOR EXHAUST SIDE OPERATION) 
   1. Connect the Techstream to the DLC3
   2. Start the engine and turn the Techstream ON
   3. Warm up the engine
   4. Enter the following menus Powertrain / Engine / Active Test / Control the VVT Exhaust Linear (Bank 2). Check the engine speed while operating the oil control valve using the Techstream

      OK 

      ENGINE CONDITION TESTER OPERATION CHART
      
      

      Tester Operation	Engine Condition
      0%	Normal engine speed
      100%	Engine idles roughly

   NG: Go to step 4 

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

4. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY 
   1. Remove the oil control valve assembly for bank 1 and/or bank 2 (See REMOVAL )
   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: Measuring Oil Control Valve Assembly Terminals Resistance

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Connect a lead from the positive battery terminal to terminal 1, and a lead from the negative battery terminal to terminal 2 Check the valve operation

      OK: Valve moves quickly. 

   4. Reinstall the oil control valve.
   Fig 2: Checking Valve Operation
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (BANK 1 AND/OR BANK 2)  (See REMOVAL )

   OK: Go to next step 

5. CHECK HARNESS AND CONNECTOR (OIL CONTROL VALVE - ECM) 
   1. Disconnect the oil control valve 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
      E31-1 - E4-4 (OE1+)	Always	Below 1 Ω
      E31-2 - E4-3 (OE1-)	Always	Below 1 Ω
      E21-1 - E5-18 (OE2+)	Always	Below 1 Ω
      E21-2 - E5-28 (OE85-)	Always	Below 1 Ω

      Standard Resistance (Check for Short) 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Condition	Specified Condition
      E31-1 or E4-4 (OE1+) - Body ground	Always	10 kΩ or higher
      E31-2 or E4-3 (OE1-) - Body ground	Always	10 kΩ or higher
      E21-1 or E5-18 (OE2+) - Body ground	Always	10 kΩ or higher
      E21-2 or E5-28 (OE85-) - Body ground	Always	10 kΩ or higher

   4. Reconnect the oil control valve and ECM connector.
   Fig 3: Identifying Oil Control Valve And ECM Connector
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: REPLACE ECM  (See REMOVAL )