15-020

Alternator Remote Sense Wiring
FLA COE
FLB COE
FLD Conventional
Business Class
FLC 112 Conventional

Century Class Conventional
Argosy COE
Cargo
Columbia
122SD and Coronado

> Business Class M2
Cascadia
> 108SD/114SD
New Cascadia

Freightliner
Service Bulletin

General Information
On EPA10 vehicles, and later, the remote sense wire and the indicator light wire may be on the wrong alternator
posts. Vehicles with reversed wires may not start if the vehicle is parked and the engine is shut down for
extended periods of time, due to parasitic battery drain.
Inspect the alternator to ensure that the wires are properly installed. Use the instructions in this bulletin to
inspect the alternator, along with Fig. 1, Fig. 2, or Fig. 3, depending on the type of alternator installed on the
vehicle.

Work Instructions
1. Park the vehicle, shut down the engine, and apply the parking brakes. Chock the tires.
2. Turn the ignition to the OFF position.
3. Open the hood.

NOTE: There should be battery voltage at the remote sense terminal, and no voltage at the indicator
light terminal.
4. Check the voltage at the indicator light terminal on the alternator. See Fig. 1, Fig. 2, or Fig. 3.
Is there voltage?
YES → The remote sense and indicator light wires are reversed. Continue with step 5.
NO → Go to step 7.

NOTICE
Some vehicles are equipped with a cab-load disconnect switch (CLDS). The CLDS does not disconnect
power to the alternator and starter, so a short-circuit hazard still exists when working on the vehicle.
The batteries must be disconnected to remove the short-circuit hazard when working on the charging
system.
5. Disconnect the negative battery cables at the main battery pack.
6. Swap the remote sense and indicator light wires. Verify the repair, then continue with step 9.
7. Check the voltage at the remote sense terminal.
Is there battery voltage?
YES → Go to step 9.
NO → Check the remote sense fuse at the powernet distribution box (PNDB), and make sure the fuse is
not blown. If the fuse is blown, replace the fuse, then continue with step 8.
8. Check the remote sense wire from the alternator to the PNDB for shorts or opens. Repair as necessary,
then continue with step 9.
9. Document in the "Warranty Notes" if the wire connections were reversed and required repair, or if the
connections were OK.

Freightliner Service Bulletin, 09/07/2017

Page 1

15-020

Alternator Remote Sense Wiring

Freightliner
Service Bulletin

FLA COE
FLB COE
FLD Conventional
Business Class
FLC 112 Conventional

2

Century Class Conventional
Argosy COE
Cargo
Columbia
122SD and Coronado

> Business Class M2
Cascadia
> 108SD/114SD
New Cascadia

3
4

1

09/27/2006

1.
2.
3.
4.

f151105

Positive Terminal (battery)
Relay Terminal (R)
Indicator Terminal (lamp)
Remote Sense Circuit
Fig. 1, Delco Remy 36SI

Page 2

Freightliner Service Bulletin, 09/07/2017

15-020

Alternator Remote Sense Wiring
FLA COE
FLB COE
FLD Conventional
Business Class
FLC 112 Conventional

Century Class Conventional
Argosy COE
Cargo
Columbia
122SD and Coronado

1.
2.
3.
4.
5.

Freightliner
Service Bulletin

> Business Class M2
Cascadia
> 108SD/114SD
New Cascadia

Positive Terminal (battery)
Ground Terminal
Remote Sense Circuit
Charge Indicator Lamp Circuit
Relay Terminal Output
Fig. 2, Delco Remy 38/40/55SI

1
2

04/16/2010

f151151

1. Remote Sense Circuit
2. Charge Indicator Lamp Circuit
Fig. 3, Leece-Neville 12V 270 AMP 4967PGH Alternator

10. Connect the batteries, if applicable.
11. Close and latch the hood.

Freightliner Service Bulletin, 09/07/2017

Page 3

15-020
Freightliner
Service Bulletin

Alternator Remote Sense Wiring
FLA COE
FLB COE
FLD Conventional
Business Class
FLC 112 Conventional

Century Class Conventional
Argosy COE
Cargo
Columbia
122SD and Coronado

> Business Class M2
Cascadia
> 108SD/114SD
New Cascadia

Warranty
This procedure is warrantable only if the described condition exists and the repair is performed within the
applicable base or extended coverage warranty period. If a failure is not found, this procedure is considered
preventive and warranty does not apply.
Normal warranty applies. See Table 1 for OWL VMRS codes and labor allowance information. Enter this service
bulletin number in the Service Bulletin # field.

Primary Failed Part
Alternator Wiring

OWL VMRS Codes and Labor Allowance
Component
Cause Code SRT Code
Description
Code
Wiring Remote Sense and Indicator,
031-001-060
77
124-5010A
Rewire

Time: Hours
0.3

Table 1, OWL VMRS Codes and Labor Allowance

Page 4

Freightliner Service Bulletin, 09/07/2017