Inspection Procedure

HINT:

Read freeze frame data using Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, 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.

1. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE 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, select the following menu items: Powertrain / Engine and ECT / Active Test / Control the VVT System (Bank 1).
   5. Check the engine speed while operating the Oil Control Valve (OCV) using the tester.

      OK 

      TESTER OPERATIONS AND SPECIFIED CONDITIONS
      
      

      Tester Operations	Specified Conditions
      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 

   NG: Go to Next Step 

2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY 
   1. Disconnect the B17 OCV connector.
   2. Measure the resistance between the terminals of the OCV.

      Standard resistance: 

      6.9 to 7.9 Ω at 20°C (68°F) 

      Fig 1: Identifying Resistance Between OCV Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Reconnect the OCV connector.

   NG: REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY 

   OK: Go to Next Step 

3. CHECK HARNESS AND CONNECTOR (OCV - ECM) 
   1. Disconnect the B17 OCV connector.
   Fig 2: Identifying OCV And ECM Connector Terminals
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Disconnect the B30 ECM connector.
   3. Measure the resistance of the wire harness side connectors.

      Standard resistance (check for open) 

      RESISTANCE SPECIFICATION
      
      

      Tester Connections	Specified Conditions
      B17-1 (OC1+) B30-100 (OC1+)	Below 1 Ω
      B17-2 (OC1 -) - B30-123 (OC1 -)	Below 1 Ω

      Standard resistance (check for short) 

      RESISTANCE SPECIFICATION
      
      

      Tester Connections	Specified Conditions
      B17-1 (OC1+) or B30-100 (OC1+) - Body ground	10 kΩ or higher
      B17-2 (OC1-) or B30-123 (OC1-) - Body ground	10 kΩ or higher

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

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: REPLACE ECM