CVVT Assembly Inspection
- Refer to CVVT & CAMSHAFT and remove CVVT Assembly.
- Check that the CVVT is locked by turning it clockwise or counterclockwise. It must not rotate.
- Intake CVVT: Seal one of the two advance holes in the camshaft journal with tape.
Exhaust CVVT: Seal one of the two retard holes in the camshaft journal with tape.
- Intake CVVT: Apply approx. 150 kPa (1.5 kgf/cm2
, 21 psi) of compressed air into the unsealed advance hole to release the lock.
Exhaust CVVT: Apply approx. 150 kPa (1.5 kgf/cm2 , 21 psi) of compressed air into the unsealed retard hole to release the lock.
- Intake CVVT: With compressed air applied, rotate the CVVT into the advance direction (counterclockwise) within its phasing range and check that the CVVT turns smoothly.
Exhaust CVVT: With compressed air applied, rotate the CVVT into the retard direction (clockwise) and check that the CVVT turns smoothly.
- Intake CVVT: Rotate the CVVT into the most retarded position (clockwise) and then check that the CVVT is locked.
Exhaust CVVT: Rotate the CVVT into the most advanced position (counterclockwise) and then check that the CVVT is locked.
Specification:
Intake: 30°±0°30" (from the most retarded position to the most advanced position)
Exhaust: 30°±0°30" (from the most advanced position to the most retarded position)
- Is parameter displayed within specification?
YES
- Check the camshaft sprocket and crankshaft sprocket for abnormal wear, cracks, or damage and replace as necessary.
- Inspect the tensioner arm and chain guide for abnormal wear, cracks, or damage and replace as necessary.
- Check the tensioner piston moves smoothly when the ratchet pawl is released with thin rod.
- Perform applicable troubleshooting guide as necessary, and then go to "VERIFICATION OF REPAIR " procedure.
NO
- Carefully re-do this troubleshooting guide steps.
- If problem still occurs, replace CVVT Assembly and then go to "VERIFICATION OF REPAIR " procedure.