Opinion
Petitioner seeks a writ of habeas corpus directing that he be released from custody and directing the Superior Court *501of Merced County to allow him to withdraw his plea of guilty to pending criminal charges.
Facts
On October 12, 1979, an information was filed in the Merced County Superior Court charging petitioner with assault by means of force likely to produce great bodily injury in violation of Penal Code section 245, subdivision (a), and inflicting great bodily injury during the commission of the assault in violation of Penal Code section 12022.7.
On October 23, 1979, petitioner entered a conditional plea of guilty to the assault charge; the conditions were that the great bodily injury allegation be dismissed, the sentence be no greater than one year in county jail, and such sentence run concurrently with all misdemeanor cases pending against petitioner. The trial court tentatively accepted the conditional plea, stating it would make a final determination after reading the probation report.
On November 20, 1979, petitioner appeared for sentencing; the hearing was continued until November 21, 1979.
On November 21, 1979, the trial court ordered petitioner committed to the custody of the Department of Corrections for a diagnostic evaluation pursuant to Penal Code section 1203.03.
Discussion
Petitioner contends that Penal Code section 1203.03 does not authorize the order committing him for diagnostic evaluation because he was not convicted of an offense punishable by imprisonment in the state prison. We disagree.
A trial court’s authority to order a criminal defendant committed to the custody of the Department of Corrections for a diagnostic evaluation pursuant to Penal Code section 1203.03 is limited by the express language of that statute—the defendant must be "... convicted of an offense punishable by imprisonment in the state prison.... ” Thus, the legality of petitioner’s diagnostic commitment turns upon whether he stood convicted of an offense punishable by imprisonment in the state prison on November 21, 1979, the date of the diagnostic commitment.
*502Penal Code section 1192.51 is determinative of the issue of whether petitioner was convicted of such an offense. Petitioner relies upon the second paragraph of Penal Code section 1192.5 to support his contention that he could not be sentenced to prison on November 21, 1979. The second paragraph of Penal Code section 1192.5 generally limits the trial court’s sentencing power to that specified in the conditional plea. However, the second paragraph provides that this general rule applies, “... except as otherwise provided in this section.... ”
The third paragraph of Penal Code section 1192.5 is the only possible exception to the general rule stated in the second paragraph.2 Although the third paragraph on its face provides for mandatory advisements to the defendant upon the court’s approval of a conditional plea, the language of such advisements must be construed as substantive law; the second paragraph language which provides for an exception to the general rule therein stated can be given effect only if the third paragraph is *503construed to state such an exception. If possible, we must construe Penal Code section 1192.5 to reconcile and give effect to all parts thereof. (See In re Bandmann (1958) 51 Cal.2d 388, 393 [333 P.2d 339].)
Construing the mandatory advisements stated in the third paragraph as substantive law, the trial court is thereby authorized to withdraw its prior approval of a conditional plea at the time set for pronouncement of judgment, and, if this is done, the defendant may withdraw his guilty plea if he so desires. Since the statute expressly requires the defendant to move to withdraw his plea if the court rejects the conditions at the time set for judgment, it follows that the guilty plea stands without conditions unless so withdrawn. Unless the third paragraph is so construed, an exception to the general rule stated in the second paragraph does not exist.
On November 21, 1979, the time set for pronouncement of judgment, the trial court had the power to sentence petitioner to prison by rejecting the conditions of his plea. Since the trial court was empowered to impose a prison sentence on November 21, 1979, petitioner stood convicted on that date of an offense punishable by imprisonment. Therefore, the diagnostic commitment was authorized by Penal Code section 1203.03.
However, a trial court has only conditional power to reject the plea conditions; the defendant’s right to withdraw his guilty plea arises upon the exercise of such power. Our conclusion that the diagnostic commitment was lawful is grounded directly upon the trial court’s conditional power to impose a prison sentence. We cannot properly rely upon a conditional power and ignore the condition; therefore, we shall give effect to the condition by holding that petitioner had the right to withdraw his guilty plea upon being committed for diagnostic evaluation.
We do not decide that a diagnostic commitment in and of itself is an exercise, of the trial court’s power to reject plea conditions. Upon our analysis, the conditional plea stands as such unless withdrawn by the defendant or subsequently rejected by the court. If a defendant exercises his right to withdraw the guilty plea upon being committed for diagnostic evaluation, the commitment obviously must be vacated for lack of a conviction to support it.3
*504As respondent points out, a diagnostic evaluation may assist trial courts in deciding whether or not to accept a guilty plea conditioned upon a sentence to local custody. We have concluded that Penal Code section 1203.03 authorizes a diagnostic evaluation upon entry of such a conditional plea. However, we have also concluded that under Penal Code section 1192.5 it is the defendant’s right to decide whether or not a diagnostic commitment is sufficiently onerous to withdraw his guilty plea and thereby relinquish the benefits of a plea bargain.
Petitioner has been in the custody of the Department of Corrections pursuant to the diagnostic commitment for several months. He may not at this point in time desire to withdraw his guilty plea. We will grant relief which allows petitioner to decide whether he presently desires to withdraw his guilty plea.4
Let a writ of habeas corpus issue directing the Superior Court of Merced County to grant Gary Eads’ motion to withdraw the guilty plea entered on October 23, 1979, in action No. 9922 provided such a motion is filed within 20 days after this opinion becomes final in all courts.
Insofar as it seeks relief not granted above, the petition for writ of habeas corpus is denied.
Hopper, J., and Zenovich, J., concurred.