Exhibit 31.01

CERTIFICATION

I, Patrick W.
Cavanagh, certify that:

1.
I have reviewed this report on Form 10-Q of Williams Controls Inc.;

2.
Based on my knowledge, this report does not contain any untrue statement of
material fact or omit to state a material fact necessary to make the statements
made, in light of the circumstances under which such statements were made, not
misleading with respect to the period covered by this report;

3.
Based on my knowledge, the financial statements, and other financial
information included in this report, fairly present in all material respects
the financial condition, results of operations and cash flows of the registrant
as of, and for, the periods presented in this report;

4.
The registrants other certifying officer
and I are responsible for establishing and maintaining disclosure controls and
procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and
internal control over financial reporting (as defined in Exchange Act Rule
13a-15(f) and 15d-15(f)) for the registrant and have:

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| | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | a)
 Designed such disclosure controls and procedures, or caused such disclosure
 controls and procedures to be designed under our supervision, to ensure that
 material information relating to the registrant, including its consolidated
 subsidiaries, is made known to us by others within those entities,
 particularly during the period in which this report is being prepared;
| |                                                                                                                                                                                                                                                                                                                                                                                       
| | b)
 Designed such internal control over financial reporting, or caused such
 internal control over financial reporting to be designed under our
 supervision, to provide reasonable assurance regarding the reliability of
 financial reporting and the preparation of financial statements for external
 purposes in accordance with generally accepted accounting principles;       
| |                                                                                                                                                                                                                                                                                                                                                                                       
| | c)
 Evaluated the effectiveness of the registrants disclosure controls and
 procedures and presented in this report our conclusions about the
 effectiveness of the disclosure controls and procedures, as of the end of the
 period covered by this report based on such evaluation; and                                                                                            
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| | d)
 Disclosed in this report any change in the registrants internal control over
 financial reporting that occurred during the registrants most recent fiscal
 quarter that has materially affected, or is reasonably likely to materially
 affect, the registrants internal control over financial reporting.                                                                     

5. The
registrants other certifying officer and I have disclosed, based on our most
recent evaluation of internal control over financial reporting, to the
registrants auditors and the audit committee of the registrants board of
directors (or persons performing the equivalent functions):

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| | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | a) All
 significant deficiencies and material weaknesses in the design or operation
 of internal control over financial reporting which are reasonably likely to
 adversely affect the registrants ability to record, process, summarize and
 report financial information; and
| |                                                                                                                                                                                                                                                                                 
| | b) Any fraud,
 whether or not material, that involves management or other employees who have
 a significant role in the registrants internal control over financial
 reporting.                                                                                                

|                    |                         
|------------------- | ------------------------
|Date: May
 12, 2011 | /s/ PATRICK
 W. CAVANAGH
|                    |                         
|                    | Patrick W.
 Cavanagh    
|                    | Chief
 Executive Officer

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