Cal.Rptr. 94]; People v. Garcia, 250 Cal.App.2d 15, 20-21 [58 Cal.Rptr. 186].) Our holding is limited, however, to those situations where the aider and abettor’s diminished capacity is due to voluntary intoxication. It has no application to situations where his diminished capacty is caused by a mental disorder. (See People v. Noah, 5 Cal.3d 469, 477-478 [96 Cal.Rptr. 441, 487 P.2d 1009].) It does preserve intact, though, in the voluntary intoxication cases for all aiders and abettors regardless of their particular mens rea, the equal culpability principle enunciated in Penal Code section 31, and makes their exposure to criminal liability no greater than that of the perpetrator of a specific intent crime.
It is well settled that if the defendant requests an instruction it must be given if there is any evidence on that issue deserving of any consideration whatsoever, that failure to so instruct on every material question presented by the evidence is error (see People v. Tidwell, 3 Cal.3d 82, 86 [89 Cal.Rptr. 58, 473 P.2d 762]), and the error, harmless or not, is prejudicial per se since appellant is thereby denied a jury trial on all of the issues presented by the evidence. (See People v. Tidwell, supra, at pp. 86-87; People v. Mosher, 1 Cal.3d 379, 390-391 [82 Cal.Rptr. 379, 461 P.2d 659]; People v. Graham, 71 Cal.2d 303, 316-317 [78 Cal.Rptr. 217, 455 P.2d 153]; People v. Castillo, 70 Cal.2d 264, 270-271 [74 Cal.Rptr. 385, 449 P.2d 449]; People v. Modesto, 59 Cal.2d 722, 730 [31 Cal.Rptr. 225, 382 P.2d 33], overruled on another ground, People v. Morse, 60 Cal.2d 631, 649 [36 Cal.Rptr. 201, 388 P.2d 33, 12 A.L.R.3d 810].)
In the instant case appellant introduced evidence of intoxication worthy of consideration. Appellant testified that he had been drinking, that he was “kind of high” and “kind of loaded.” He had an argument with his wife about his drinking. The fact that appellant had been drinking a lot was corroborated by his wife, who took over the wheel of the car at 6 p.m. on the evening in question because he had been drinking too much and for that same reason she later refused to give him money to buy more alcohol. It is true that appellant also testified that he was not drunk at 6 p.m. and that the highway patrolman who gave appellant a citation at this time did not detect the odor of alcohol nor any symptoms of intoxication. Nevertheless the law requires that “[h\owever incredible the testimony of a defendant may be he is entitled to an instruction based upon the hypothesis that it is entirely true.” (Italics original.) (People v. Modesto, supra, 59 Cal.2d 722 at p. 729.) Moreover, the trial judge himself apparently was of the opinion