03103213-B001EN- Service Bulletin/Repair Instructions

Auxiliary Heater Harness

Service Bulletin

OBSOLETE SUPERCEDED BY 03103213-D002EN
Customer: Cintas

Situation: Auxiliary heater may blow fuse on main dash harness

Corrective Action Summary: Replace heater switch and route new

power harness with inline fuse from battery

Range of Units Affected: 2015 Aeromaster on the Ford F59 chassis

equipped with auxiliary cab heaters manufactured after January 1, 2016.

Contact Utilimaster Warranty Department to verify chassis VIN.

Authorized to Perform the Work:

√

√
Customer or customer contractor

Utilimaster or Utilimaster contractor
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PSR-100173
Auxiliary Heater Harness

Service Bulletin

OBSOLETE SUPERCEDED BY 03103213-D002EN
Parts Required:

KIT 23003824SK-Auxiliary Heater Harness Kit

Part Number

16303502

16511375-20000

16511367-20250

16511367-64250

16511375-64000

16511375-28000

11300177

16514677

16516418-1D1G66

16516417-G2008

16512443-64312

16516872-00750

16303200

16510019

16605701

16514575-00150

16512651

03104479

03103213-B001EN
Description

WIRE SXL CRS/LNK POLY WHT 16GA

CONN BUTT H/S

TERMINAL FEMALE SPADE

TERMINAL FEMALE SPADE .

CONN BUTT H/S 16-14

CONN BUTT H/S 22-18

SCREW STP PNH TX 1/4-20 x .75 ZN

RELAY 12V 60A

SW BODY CARLING 0N/OFF

ACTR SW CARLING GRN "AUX HTR"

TERMINL RING H/S INSULATE

BUSHING SNAP .750

RED 10 GA WIRE

3/8” SPLIT LOOM

STRAP WIRE TIE BLK 15.35''

15A FUSE

FUSE HOLDER

DECAL SERVICED JOB CODE

AUX HEATER HARNESS BULLETIN
Qty

2 ft

2

1

3

2

2

2

1

1

1

2

1

19 ft

19 ft

10

1

1

1

1
Tools Required:

•

•

•

•

•

•
Standard combination and ratchet wrench sets

Phillips and standard screw driver sets

Drill with F-bit (or1/4"), 7/32", and 3/4" bits

Sta-Kon terminal crimping tool or equivalent

Deburring tool or file

Heat gun
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PSR-100173
Auxiliary Heater Harness

Service Bulletin

OBSOLETE SUPERCEDED BY 03103213-D002EN
Wiring Overview
Heater harness wiring overview
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PSR-100173
Auxiliary Heater Harness

Service Bulletin

OBSOLETE SUPERCEDED BY 03103213-D002EN
Procedure

1. Disconnect the Negative (-) battery cable(s).

2. Use an F-bit to drill a pilot hole in the LH cowl.

3. Use a 3/4" bit to enlarge hole.
Hole for battery power harness
4. Feed the heater power supply harness through cowl riser, apply sealant to harness

bushing and secure.

5. Route power harness along the cowl harness, RH chassis harness and frame rail to

the battery box.
Power harness secured to cowl harness to frame rail
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PSR-100173
Auxiliary Heater Harness

Service Bulletin

OBSOLETE SUPERCEDED BY 03103213-D002EN

Keep all fasteners for installation.

6. Remove (6) screws from the dash hood and set aside.
Dash hood
7. Disconnect the auxiliary heater control switch and discard.
Auxiliary heater switch
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PSR-100173
Auxiliary Heater Harness

Service Bulletin

OBSOLETE SUPERCEDED BY 03103213-D002EN

8. Drill a 7/32" hole in the dash bracket.

9. Cut and strip Ground wire and crimp a ring terminal and terminal connector to

each end.

10. Secure the WHITE Ground wire ring terminal to the cowl with a 1/4-20 fastener.
Relay Ground wire
11. Cut, strip and crimp a terminal connector to the RED battery harness.

12. Cut the DARK BLUE switch wire. Strip wires and crimp terminal connectors to

both ends.

13. Connect RED Battery harness, both DARK BLUE heater power switch and

Ground terminals to relay.
Switch wiring
14. Insert replacement switch in dash and connect harness.

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PSR-100173
Auxiliary Heater Harness

Service Bulletin

OBSOLETE SUPERCEDED BY 03103213-D002EN
Switch (top shown) and dash opening
15. Install inline fuse at battery box.

16. Connect to Positive (+) battery terminal.

17. Connect the Negative (-) battery cable(s).
Inline fuse on heater power harness
Secure wire harnesses a maximum of every 18".

All wire harnesses need to be free and clear from the range of motion of any moving

part and MUST be prevented from falling into the range of motion of a moving part.

18. Test system operation.

19. Secure all harnesses with wire ties to the LH chassis harness, cross member and

frame rails.

20. Install dash.
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PSR-100173
Auxiliary Heater Harness

Service Bulletin

OBSOLETE SUPERCEDED BY 03103213-D002EN

21. Use Job Code 13-N3-91-Z4 from this document to complete the SERVICED

decal.

22. Adhere the decal to the upper right-hand corner of the driver’s door pocket panel

next to the bulkhead wall. Do NOT cover any previously applied decals.
Service decal on driver’s door pocket (cargo side)

NOTE: In order to be reimbursed for labor, the repair MUST be completed and

warranty claim filed within 1 year from the initial date of this publication.
File Warranty By: April 11, 2017

Contact Utilimaster to Order Parts and File Warranty.

Email: Warranty@Utilimaster.com

Mail or Express Service:

Utilimaster

Attn: Warranty Dept.

603 Earthway Blvd.

Bristol, IN 46507-9182, USA
Phone: 574-848-2000

Fax:

574-848-2809
Labor Allowance: Up to 0.75 hours
Job Op Code: 13-N3-91-Z4
Document Part Number: 03103213-B001EN
Revision: A
This material is confidential and the property of Utilimaster. No part of this document may be photocopied,

reproduced, or translated to another language without the prior written consent of Utilimaster.

Utilimaster® is a registered trademark of Spartan Motors USA, Inc. Utilimaster attempts to provide

information that is accurate, complete, and useful. All information contained in this document is based on

the latest product information available at the time of publication. However, because of the Utilimaster

policy of continual product improvement, Utilimaster reserves the right to amend the information in this

document at any time without prior notice.
2016 Utilimaster®

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PSR-100173

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