Inspection Procedure

HINT:

• Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was LEAN or RICH, and other data from the time the malfunction occurred.
• If DTC P0010 is displayed, check the bank 1 VVT OCV.
• If DTC P0020 is displayed, check the bank 2 VVT OCV.
• Bank 1 includes No. 1 cylinder, but bank 2 does not. No. 1 cylinder is located in the front part of the engine, opposite the transmission.

1. PERFORM ACTIVE TEST (OCV OPERATION) 
   1. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
   2. Start the engine and warm it up.
   3. Turn the engine switch on (IG) and turn the tester ON.
   4. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VVT CTRL B1 (VVT CTRL B2).
   5. Operate the OCV and check the engine condition at idling.

      OK 

      TESTER OPERATION SPECIFIED CONDITION CHART
      
      

      Tester Operation	Specified Condition
      OCV is OFF	Normal engine RPM
      OCV is ON	Rough idle or engine stall

   OK: CHECK FOR INTERMITTENT PROBLEMS 

   NG: Go to next step 

2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OPERATION) 
   1. Disconnect the E5 or E41 OCV connector.
   2. Apply battery voltage to the terminals of the OCV.
   3. Check the engine speed.

      OK: 

      Rough idle or engine stalled. 

   Fig 1: Inspecting Camshaft Timing Oil Control Valve Assembly (Operation)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY 

   OK: Go to next step 

3. CHECK ECM (OCV SIGNAL) 
   1. While idling the engine, check the waveform of the ECM connector using an oscilloscope.

      OK 

      TESTER CONNECTION SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      E8-34 (OC1+) - E8-33 (OC1-)	Correct waveform is as shown
      E6-9 (OC2+) - E6-8 (OC2-)	Correct waveform is as shown

   Fig 2: Identifying ECM Connector And OCV Signal Waveform

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPLACE ECM 

   OK: Go to next step 

4. CHECK WIRE HARNESS (OCV - ECM) 
   1. Disconnect the E5 and E41 OCV connectors.
   2. Disconnect the E6 and E8 ECM connectors.
   3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      E5-1 - E8-34 (OC1+)	Below 1 Ω
      E5-2 - E8-33 (OC1-)	Below 1 Ω
      E41-1 - E6-9 (OC2+)	Below 1 Ω
      E41-2 - E6-8 (OC2-)	Below 1 Ω
      E5-1 or E8-34 (OC1+) - Body ground	10 kΩ or higher
      E5-2 or E8-33 (OC1-) - Body ground	10 kΩ or higher
      E41-1 or E6-9 (OC2+) - Body ground	10 kΩ or higher
      E41-2 or E6-8 (OC2-) - Body ground	10 kΩ or higher

   Fig 3: Identifying E5 And E41 OCV Connectors And E6 And E8 ECM Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

   OK: CHECK FOR INTERMITTENT PROBLEMS