
<PAGE>
                                                                    EXHIBIT 23.1

                     CONSENT OF PRICEWATERHOUSECOOPERS LLP

    We hereby consent to the incorporation by reference in this Registration
Statement on Form S-3 of our report dated January 28, 1999 relating to the
financial statements and financial statement schedules, which appears in CTS
Corporation's Annual Report on Form 10-K for the year ended December 31, 1998.
We also consent to the reference to us under the heading "Experts" in such
Registration Statement.

    The financial statements incorporated in this Prospectus by reference to the
Annual Report on Form 10-K for the year ended December 31, 1998 have been so
incorporated in reliance on the report of PricewaterhouseCoopers LLP,
independent accountants, given on the authority of said firm as experts in
auditing and accounting.


                                          /S/PRICEWATERHOUSECOOPERS LLP



Chicago, Illinois
December 9, 1999




