SERVICE PROGRAM - Autocar, LLC

SERVICE PROGRAM 

SP 2-872-001 

July 2004 

ATTENTION: 

SUBJECT: 

VEHICLES 

AFFECTED: 

SERVICE MANAGERS / PARTS MANAGERS 

CUMMINS ISM ENGINE FAULT CODE WHEN FAN 

STARTS 

CERTAIN AUTOCAR WX, WXR AND WXLL MODEL 

VEHICLES DELIVERED BETWEEN JULY 2003 AND 

FEBRUARY 2004, VIN NUMBER RANGE 200013 TO 

200355. 

S ERV ICE PROGRAM IN FO RMAT IO N : 

Service Programs are product modifications that Autocar has determined should be 

performed on all vehicles affected, proactively. It is preferred that the modification 

takes place prior to a failure. The expense related to this Service Program will be 

eligible for warranty recovery based on the published program standard labor time 

and required parts. Service Programs do expire. Reimbursement will not be 

available for claims submitted after the expiration date published on the Service 

Program. 

It has come to our attention that certain WX, WXLL, WXR trucks with ISM engines log 

a fault code for an open circuit to fan solenoid when the A/C Pressure or 

Transmission Temperature Switches open to cause the fan to come on. Harness 

A8720018-002 changes the logic of the switches to request the engine ECU to turn 

the fan on without logging a fault code. 

N U MB ER of V EHICLES A FF ECTE D: 

There are 99 vehicles with serial numbers in the range 200013 to 200355. Please see 

Page 8 for a listing of the trucks affected by this Service Program. 

NOTE: To verify or determine if a particular vehicle is affected by this Service 

Program, you should consult the Service/Warranty screen. By entering the Vehicle 

Identification Number into the VIN Profile, the screen will display any outstanding 

Service Program(s) and/or outstanding recall(s). If the Service Program number does 

not appear in the VIN Profile then it has been completed. 

Autocar, LLC 

551 South Washington St 

P.O. Box 190 

Hagerstown, IN 47346-0190 

Page 1 of 9


SP 2-872-001 

I N SP ECT IO N IN STRUC T IO N S : 

There is no inspection for this Service Program. 

R EPA IR: 

The recall repair consists of installing a wiring harness to tie into the existing engine 

chassis wiring to re-route where signals from the transmission temperature switch, 

PTO and AC high pressure switch are sent. The repair instructions are found starting 

on page 3 of this bulletin. 

T I ME A LLO W ANCE: 

Repair: 

- 1.5 hours per vehicle 

P ARTS: 

1 only A8720018-002 wiring harness 

C LA IMS FO R CR ED IT: 

Expenses associated with the performance of this Service Program will be 

reimbursed based on the guidelines identified in this Bulletin, and by submitting a 

claim following published Instructions in the claim preparation section of the "Service 

Operations Manual". 

C LA IM COD IN G IN FO R MAT IO N : 

Authorization Number: - SP 2-872-001 

Repair: - 37110-2-02 1.5 hours per vehicle 

Expiration Date: - July 31, 2005 

D EALER RE SPONSIB I LI TY: 

Dealers are to perform the Service Program on all vehicles subject to the Service 

Program at no charge to the owner regardless of mileage, age of vehicle, or 

ownership as long as the repair is carried out before the expiration date of the 

program unless stated otherwise in this bulletin. Whenever a vehicle subject to this 

Service Program is taken into or is in your vehicle inventory or dealership for service, 

we strongly recommend you make every effort to perform the Service Program 

correction before the vehicle is sold or released to the owner. 

AUTOCAR LLC 



P.O. Box 190 


Page 2 of 9


SP 2-872-001 

REPAIR PROCEDURE 

WARNING 

To prevent eye injury, always wear eye protection when performing 

vehicle maintenance, service or inspection. 

DANGER 

Before working on a vehicle, set the parking brake, place the transmission 

in neutral and block the wheels. Failure to do so can result in unexpected 

vehicle movement and can cause serious personal injury or death. 

1. Park the vehicle on a level surface. Turn off the engine, apply the parking 

brakes, and chock the rear tires to keep the vehicle from moving. 

2. Tilt cab forward. See instructions on pages 6, 7 and 8 for proper sequence 

to tilt and lower cab. 

3. With the cab tilted unplug the engine harness connection to the transmission 

oil temperature switch harness and install JUMPER 1 from harness 

A8720018-002 on the engine harness. 

Note: JUMPER1 is connected to PTOTSW2. See photo on Page 5. 

4. Connect the PTOTSW2 harness oil temperature connector from harness 

A8720018-002 to the transmission oil temperature switch harness. 

5. If the truck has a PTO installed remove the engine harness connector to the 

PTO and connect it to RRPT02 from harness A8720018-002. Then connect 

RRPT03 from harness A8720018-002 to the PTO connection. If the truck 

does not have a PTO installed, remove the weather plug from the engine 

harness PTO connector and connect it to RRPT02 from harness A8720018- 

002. Leave the weather connector on RRPT03 from harness A8720018-002 

in place. 

6. Remove 559PC wire from pin 6 of engine ECU connector and heat shrink 

end. If you are unable to remove the pin from the connector clip the 559PC 

wire two or more inches back from the connector and heat shrink the harness 

end of the wire with sealing heat shrink. 



P.O. Box 190 


Page 3 of 9


SP 2-872-001 

7. If you were able to remove the 559PC wire from pin 6 of ECU connector then 

install 682A2 wire from harness A8720018-002 into pin 6 of the ECU 

connector. If you were unable to remove the wire and cut it, then remove the 

pin on wire 682A2 and splice it to wire 559PC. Be sure to solder the splice 

connections and cover with sealing heat shrink. 

8. If the truck is equipped with an AC pressure switch remove the engine 

harness from this switch and install JUMPER2 on this harness. Then 

connect PFSH2 from harness A8720018-002 to the AC pressure switch. If 

no AC pressure switch is in place leave weather cap on engine harness and 

JUMPER2 on PFSH2 connector. Installation of harness A8720018-002 is 

now complete. 

Note: JUMPER 2 is connected to PFSH2. See photo on Page 5. 

9. Clip and bundle new harness and loose connectors from engine harness 

neatly. 

10. To test the harness installation, lower the cab, connect your shop exhaust 

removal hose(s) to engine exhaust system and start engine. 

Raise the cab and disconnect the PTOTSW2 harness oil temperature 

connector from harness A8720018-002 to the transmission oil temperature 

switch harness. The engine fan should immediately startup. Reconnect the 

harness and the fan should stop after 3 minutes unless one of the other 

components is asking for cooling. If the truck has air conditioning carefully 

disconnect PFSH2 from harness A8720018-002 to the AC pressure switch 

(taking care not to get loose clothing or body parts caught in the spinning 

alternator drive belt and pulley) and the fan should start immediately, 

reconnecting the harness should stop the fan after 3 minutes unless one of 

the other components is asking for cooling. If disconnecting the connectors 

above does not start the fan immediately please shutoff the engine and 

connect your laptop to the engine and using Cummins Insite, check the Fan 

Control programming. If the truck has air conditioning or not the “Air 

Conditioner Pressure Switch Input”should be set to Enable and the 

“Minimum Fan On Time for A/C Pressure Switch”should be set for 180 

seconds. If fan does still not operate with these settings please check the 

installation of the A8720018-002 harness. 

11. Service Program is complete. Lower cab and lock in place as per the 

instructions shown on Page 8. 



P.O. Box 190 


Page 4 of 9


SP 2-872-001 

Harness A8720018-002 

To Pin 6 on Engine 

ECU connector 

PFSH2 –Connects to 

AC Pressure switch if 

available 

JUMPER 2 

PTOTSW2 –Connects to 

Trans Oil Temp Switch 

JUMPER 1 

RRPT02 –Connects 

to Engine Harness 

PTO Connector 

RRPT03 –To Customer PTO 

Connection if Available 

Page 5 of 9 



P.O. Box 190 

Hagerstown, IN 47346-0190


SP 2-872-001 

Tilting Cab 

General 

NOTE! Remove or secure all loose articles and 

close all doors before tilting the cab. The area 

above and ahead of the cab must be clear. The 

front wheels should be pointed in the straight 

ahead position. Read the label affixed to the 

seat base for more cab tilting information. 

DANGER 

Apply the parking brakes and if the truck is 

equipped with a manual transmission, place the 

gear in neutral to prevent unwanted vehicle 

movement and possible injury or death. 

CAUT ION 

Due to the danger of sustaining personal injury 

and/or damage to the vehicle, never attempt to 

raise the cab outside under extremely windy 

conditions. The strong wind conditions could 

force the cab beyond the normal limits of its 

travel. 

Raising the Cab 

Release the cab latch by lifting the security lock 

(1) on the lever and then push lever (2) up until 

the cab latch hook (3) is free from its retainer. 

The cab lock is now in its open position (B). 

Release the cab latch on the other side of the 

cab. 

WARNING 

Disengage both cab DANGER latches before tilting the 

cab. Raising the cab with only one latch 

disengaged can result in vehicle damage. 

Page 6 of 9 



P.O. Box 190 



SP 2-872-001 

Remove the pump handle from its storage 

location on either the driver or passenger 

side rear cab corner. It is held in place with 

two clips to the cab wall. 

Place the flow valve selector on the cab tilt 

pump pointing rearward. The text on the 

selector handle that reads “RAISE”is now 

facing out. 

Put one end of the pump handle into the 

pump and operate the pump in an up and 

down motion. As hydraulic pressure 

increases, the cab tilt cylinders will start to 

move the cab up. When the cab goes over 

its balance point, it will fall at a controlled 

speed to its full tilt position and automatically 

relieves the hydraulic system pressure. 

WARNING 

It is advisable to remove the pump handle 

when it is not in use as it sticks out past the 

cab and could cause injury to someone 

passing by. 

To stop the cab in a partially tilted position 

while raising it, stop pumping and place the 

flow valve selector in the hold position. Install 

the lock pin in the cab tilt lock tube wherever 

the holes line up. 

DANGER 

Do not rely on the hydraulic pressure to hold 

the cab in a partially open position. Always 

use the lock pin in the cab tilt lock tube to 

prevent personal injury or death. 

Page 7 of 9 



P.O. Box 190 



SP 2-872-001 

Lowering the Cab 

Place the flow valve selector on the cab tilt 

pump pointing forward. The text on the 

selector handle that reads “LOWER”is now 

facing out. Remove the lock pin from the 

cab tilt lock tube. 

Put one end of the pump handle into the 

pump and operate the pump in an up and 

down motion. As hydraulic pressure 

increases, the cab tilt cylinders will start to 

move the cab. When the cab goes over its 

balance point, it will fall at a controlled speed 

until it settles over the rear mounts. 

Remove the pump handle from the pump 

and return it to its storage location inside the 

cab. 

Locking the Cab in Place 

The hold down latch hook (3) is placed into 

the retainer and then locked down by pulling 

the latch lever (2) down. Make sure the 

security lock (1) snaps into place to hold the 

latch lever in place. Lock the cab latch on 

the other side of the cab. 

Page 8 of 9 



P.O. Box 190 



SP 2-872-001 

Trucks involved in this Service Program 

VIN No. VIN No. VIN No. 

5VCHC6BEX4H200013 5VCDC6BEX4H200060 5VCDC6BE14H200187 

5VCHC6BE14H200014 5VCDC6BE14H200061 5VCDC6BE34H200188 


5VCHC6BE54H200016 5VCHC6BE34H200063 5VCDC6BE44H200197 


5VCHC6BE94H200018 5VCHC6BE74H200065 5VCHC6BE74H200230 



5VCDC6BE24H200022 5VCDC6BE64H200069 5VCEC6BE34H200244 

5VCDC6BE44H200023 5VCDC6BE24H200070 5VCDC6BE24H200246 



5VCDC6BEX4H200026 5VCDC6BE84H200073 5VCDC6BE74H200257 

5VCDC6BE44H200040 5VCHC6BE84H200074 5VCDC6BE94H200258 



5VCHC6BE84H200043 5VCHC6BE74H200082 5VCEC6BE44H200270 

5VCHC6BEX4H200044 5VCDC6BE24H200084 5VCDC6BE54H200273 

5VCDC6BE34H200045 5VCDC6BE44H200085 5VCDC6BEX4H200298 

5VCDC6BE54H200046 5VCDC6BE64H200086 5VCEC6BE74H200327 

5VCEC6BE14H200047 5VCDC6BE14H200108 5VCEC6BE94H200328 

5VCDC6BE94H200048 5VCHC6BE14H200109 5VCEC6BE74H200330 

5VCDC6BE04H200049 5VCDC6BE44H200118 5VCHC6BE14H200336 









5VCHC6BEX4H200058 5VCDC6BE84H200185 5VCDC6BE54H200354 

5VCDC6BE34H200059 5VCDC6BEX4H200186 5VCHC6BE54H200355 



P.O. Box 190 


Page 9 of 9

SERVICE PROGRAM - Autocar, LLC

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