**Exhibit 31.1**

** **

**Certification**

 

I, Jon D. Volkert, certify that:

 
| 1.     | I have reviewed this annual  report on Form 10-K, and all reports on Form 8-K containing distribution or  servicing reports filed in respect of periods included in the year covered by  this annual report, of John Deere Owner Trust 2003;                                                                                                                                                                                                    |
|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                            |   |
| 2.     | Based on my knowledge, the  information in these reports, taken as a whole, does not contain any untrue  statement of a 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 as of the last day of the period covered  by this annual report;                                                                            |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                            |   |
| 3.     | Based on my knowledge, the  distribution or servicing information required to be provided to the trustee  by the servicer under the pooling and servicing, or similar, agreement, for  inclusion in these reports is included in these reports;                                                                                                                                                                                                 |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                            |   |
| 4.     | I am responsible for reviewing  the activities performed by the servicer under the pooling and servicing, or  similar, agreement and based upon my knowledge and the annual compliance  review required under that agreement, and except as disclosed in the reports,  the servicer has fulfilled its obligations under that agreement; and                                                                                                     |
|   |                                                                                                                                                                                                                                                                                                                                                                                                                                            |   |
| 5.     | The reports disclose all  significant deficiencies relating to the servicer’s compliance with the  minimum servicing standards based upon the report provided by an independent  public accountant, after conducting a review in compliance with the Uniform  Single Attestation Program for Mortgage Bankers or similar procedure, as set  forth in the pooling and servicing, or similar, agreement, that is included  in these reports. |

 

 
|   |            | JOHN DEERE OWNER TRUST 2003 |
|--------|-----------------|-----------------------------|
|   |            |                        |   |
|   |            |                        |   |
|   |            | By:                         | John Deere Capital Corporation  (Servicer) |
|   |            |                        |   |
|   |            |                        |   |
|   |            | By:                         | */s/ Jon D. Volkert* |
|   |            |                        | Jon D. Volkert |
|   |            |                        | President |
| Dated: | January 9, 2004 |                        |   |

 

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