Inspection Procedure

Fig 1: Identifying Signal Waveform

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1. Camshaft position sensor.
2. Crankshaft position sensor.

HINT:

• Read freeze frame data using the Techstream. 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.
• DTC P1340 indicates a malfunction related to the camshaft position sensor (+) circuit.

1. INSPECT CAMSHAFT POSITION SENSOR 
   1. Disconnect the C1 sensor connector.
   2. Measure the resistance of the sensor.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   1-2	Cold	835 to 1400 Ω
   1-2	Hot	1600 to 1645 Ω

   NOTE: In the above section, the terms "Cold" and "Hot" refer to the temperature of the sensor. "Cold" means approximately -10 to 50°C (14 to 212°F). "Hot" means approximately 50 to 100°C (122 to 212°F).

   NG: REPLACE CAMSHAFT POSITION SENSOR 

   Fig 2: Inspecting Camshaft Position Sensor

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: Go to next step 

2. CHECK WIRE HARNESS (CAMSHAFT POSITION SENSOR - ECM) 
   1. Disconnect the C1 camshaft position sensor connector.
   2. Disconnect the E2 ECM connector.
   3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   C1-1 - E2-21 (G2)	Below 1 Ω
   C1-2 - E2-20 (G2-)	Below 1 Ω
   C1-1 or E2-21 (G2) - Body ground	10 kΩ or higher
   C1-2 or E2-20 (G2-) - Body ground	10 kΩ or higher

   NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

   Fig 3: Checking Wire Harness (Camshaft Position Sensor - ECM)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: Go to next step 

3. CHECK SENSOR INSTALLATION 
   1. Check the sensor installation.

   OK: 

   Sensor is installed correctly. 

   NG: SECURELY REINSTALL SENSOR 

   Fig 4: Identifying Proper Sensor Installation Position

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: Go to next step 

4. CHECK VALVE TIMING 
   1. Remove the engine cover.
   2. Remove the drive belt.
   3. Remove the timing belt cover LH and RH.
   4. Turn the crankshaft to align the matchmarks of the crankshaft.
   5. Align the notch of the crankshaft pulley with the "0" position.
   6. Confirm whether the matchmarks of the camshaft pulley and cylinder head cover are facing each other.
   7. If the matchmarks are not facing each other, turn the crankshaft clockwise by 360°. Confirm again if the matchmarks are facing each other.

   OK: 

   The matchmarks of the camshaft pulley and the cylinder head cover face each other when the notch of the crankshaft pulley is in the "0" position. 

   NG: ADJUST VALVE TIMING 

   Fig 5: Identifying Matchmarks Of Camshaft Pulley And Cylinder Head Cover

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: REPLACE ECM