DTC P0010: Camshaft Position "A" Actuator Circuit (Bank 1); DTC P0020: Camshaft Position "A" Actuator Circuit (Bank 2): Procedure

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 and ECT / 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

   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 

NG: Go to next step 

1. Disconnect the OCV connector.
   Fig 1: Measuring Resistance Between Terminals Of OCV

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance between the terminals of the OCV.

   Standard resistance

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

3. Reconnect the OCV connector.

NG → REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY 

OK: Go to next step 

1. Disconnect the OCV connector.
   Fig 2: Identifying Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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
   OC1+ (E3-34) - E18-1	Below 1 Ω
   OC1- (E3-33) - E18-2	Below 1 Ω
   OC2+ (E5-9) - E11-1	Below 1 Ω
   OC2- (E5-8) - E11-2	Below 1 Ω

   Standard resistance (check for short)

   Tester Connection	Specified Condition
   OC1+ (E3-34) or E18-1 - Body ground	10 kΩ or higher
   OC1- (E3-33) or E18-2 - Body ground	10 kΩ or higher
   OC2+ (E5-9) or E11-1 - Body ground	10 kΩ or higher
   OC2- (E5-8) or E11-2 - 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