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Toyota Corolla Repair Manual: Circuit description

Refer to dtc p0335

Dtc no.

Dtc detection condition

Trouble area

P0016 Deviation in crankshaft position sensor signal and camshaft position sensor signal (2 trip detection logic)
  • Mechanical system (timing chain has jumped a tooth, chain stretched)
  • ecm

Monitor description

The ecm optimizes the valve timing using the variable valve timing (vvt) system to control the intake valve camshaft. The vvt system includes the ecm, the oil control valve (ocv) and the vvt controller. The ecm sends a target dutycycle control signal to the ocv. This control signal, applied to the ocv, regulates the oil pressure supplied to the vvt controller. The vvt controller can advance or retard the intake valve camshaft.

The ecm calibrates the valve timing of the vvt system by setting the camshaft to the maximum retard angle when the engine speed is idling. The ecm closes the ocv to retard the cam. The ecm stores this valve as vvt learned value (when the difference between the target valve timing and the actual valve timing is 5 or less, the ecm learns it).

If the learned value meets both of the following conditions (a and b), the ecm interprets this as a defect in the vvt system and set a dtc.

  1.  vvt learning value is less than 24 ca, or more than 46 ca.
  2. above condition continues for more than 18 seconds.

Monitor strategy

Typical enabling conditions

Typical enabling conditions

Typical malfunction thresholds

Typical malfunction thresholds

Wiring diagram

Wiring diagram

Refer to dtc p0335

Crankshaft position camshaft position correlation
Dtc p0016 crankshaft position camshaft position correlation (bank 1 sensor a) ...

Inspection procedure
Hint: read freeze frame data using the handheld tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is usefu ...

Other materials:

Malfunction in clock
Wiring diagram Inspection procedure 1 Inspect fuse Check the continuity in cig fuse.  check the continuity in dome fuse. 2 Inspect harness or connector Check voltage.  Remove the clock assy with connector still connected.  Measure voltage between ter ...

Check short circuit
If the wire harness is ground shorted as shown in fig. 5, Locate the section by conducting a resistance check with the body ground in step (b). Check the resistance with the body ground.  Disconnect connectors a and c and measure the resistance between terminals 1 and 2 ...

Warning lights and indicators
The warning lights and indicators on the instrument cluster and center panel inform the driver of the status of the vehicles various systems. For the purpose of explanation, the following illustration displays all warning lights and indicators illuminated. ► Vehicles with a drive monito ...

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