Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

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.

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0016)

Connect Techstream to the DLC3.
Turn the ignition switch ON and turn the tester ON.
Select the following menu items: Powertrain / Engine and ECT / Trouble Code.

Read DTCs.

Result

RESULT REFERENCE

Display (DTC Output)	Proceed To
P0016	A
P0016 and other DTCs	B

HINT:

If any DTCs other than P0016 are output, troubleshoot those DTCs first.

B: GO TO DTC CHART

A: Go to Next Step

PERFORM ACTIVE TEST BY ACTIVE TEST USING TECHSTREAM

Connect Techstream to the DLC3.
Start the engine and turn the tester ON.
Warm up the engine.
On the tester, select the following menu items: Powertrain / Engine and ECT / Active Test / Control the VVT System (Bank 1).

Check the engine speed while operating the Oil Control Valve (OCV) using the tester.

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)

NG: Go to step 4

OK: Go to Next Step

CHECK WHETHER DTC OUTPUT RECURS
1. Connect Techstream to the DLC3.
2. Turn the ignition switch ON.
3. Turn the tester ON.
4. Clear DTCs (see DTC CHECK / CLEAR ).
5. Switch the ECM from normal mode to check mode using the tester (see CHECK MODE PROCEDURE ).
6. Start the engine and warm it up.
7. Drive the vehicle for more than 10 minutes.
8. Confirm that no DTC is set, using the tester.
  OK:
  
  No DTC output
NG: Go to step 4

OK: END
CHECK VALVE TIMING (CHECK FOR LOOSE AND JUMPED TOOTH OF TIMING CHAIN)
1. Remove the cylinder head cover.
2. Turn the crankshaft pulley, and align its groove with the timing mark "0" on the timing chain cover.
3. Check that the timing marks on the camshaft timing sprocket and camshaft timing gear are facing upward as shown in the illustration.
  If not, turn the crankshaft 1 revolution (360°), then align the marks as above.
  
  OK:
  
  Timing marks on camshaft timing gears are aligned as shown in the illustration.
  
  Fig 1: Identifying Timing Marks On Camshaft Timing Gears
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Reinstall the cylinder head cover.
NG: ADJUST VALVE TIMING

OK: Go to Next Step
INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
1. Remove the OCV.
2. Measure the resistance between the terminals of the OCV.
  Standard resistance:
  
  6.9 to 7.9 Ω at 20°C (68°F)
3. Apply the positive battery voltage to terminal 1 and negative battery voltage to terminal 2. Check the valve operation.
  OK:
  
  Valve moves quickly.
  
  Fig 2: Identifying Camshaft Timing Oil Control Valve Assembly
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Reinstall the OCV.
NG: REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

OK: Go to Next Step
INSPECT OIL CONTROL VALVE FILTER
1. Remove the generator.
2. Remove the OCV filter.
3. Check that the filter is not clogged.
  OK:
  
  Filter is not clogged.
4. Reinstall the OCV filter.
5. Reinstall the generator.
NG: REPLACE OIL CONTROL VALVE FILTER

OK: Go to Next Step
REPLACE CAMSHAFT TIMING GEAR ASSEMBLY
CHECK WHETHER DTC OUTPUT RECURS
1. Connect Techstream to the DLC3.
2. Turn the ignition switch ON and turn the tester ON.
3. Clear DTCs (see DTC CHECK / CLEAR ).
4. Start the engine and warm it up.
5. Switch the ECM from normal mode to check mode using the tester.
6. Drive the vehicle for more than 10 minutes.
7. Read output DTCs using the tester.
  Standard:
  
  No DTC output.
NG: REPLACE ECM

OK: END