RAM 5500 Chassis Cab (2021 year). Manual in english — page 25

394

SERVICING AND MAINTENANCE

(Continued)

FUSES

General Information

The fuses protect electrical systems against

excessive current.
When a device does not work, you must check

the fuse element inside the blade fuse for a

break/melt.
Also, please be aware that when using power

outlets for extended periods of time with the

engine off may result in vehicle battery

discharge.

Blade Fuses

PERFORMED BY
PERFORMED AT

Noise Systems Maintenance Chart and Service Log — Insert Month, Day, Year under column mileage closest to the mileage at which

service was performed.

WARNING!



When replacing a blown fuse, always use

an appropriate replacement fuse with the

same amp rating as the original fuse. Never

replace a fuse with another fuse of higher

amp rating. Never replace a blown fuse with

metal wires or any other material. Do not

place a fuse inside a circuit breaker cavity

or vice versa. Failure to use proper fuses

may result in serious personal injury, fire

and/or property damage.



Before replacing a fuse, make sure that the

ignition is off and that all the other services

are switched off and/or disengaged.



If the replaced fuse blows again, contact an

authorized dealer.



If a general protection fuse for safety

systems (air bag system, braking system),

power unit systems (engine system, trans

-

mission system) or steering system blows,

contact an authorized dealer.

WARNING!

(Continued)

1 — Fuse Element
2 — Blade Fuse with a good/functional fuse

element
3 — Blade fuse with a bad/not functional fuse

element (blown fuse)

SERVICING AND MAINTENANCE

395

Power Distribution Center

The Power Distribution Center is located in the

engine compartment near the battery. This

center contains cartridge fuses, micro fuses,

relays, and circuit breakers. A description of

each fuse and component may be stamped on

the inside cover, otherwise the cavity number of

each fuse is stamped on the inside cover that

corresponds to the following chart.

Power Distribution Center Location

Cavity

Cartridge Fuse

Micro Fuse

Description

F01

–

–

Spare

F02

60 Amp Yellow

–

ABS Pump Motor (HD Only)

F03

60 Amp Yellow

–

Rad Fan – If Equipped

F04

50 Amp Red

400W Inverter – If Equipped

F05

40 Amp Green

–

Compressor For Air Suspension – If Equipped

F06

40 Amp Green

–

Steering Torque Overlay Module (STOM)

F07

40 Amp Green

–

Starter Solenoid

F08

20 Amp Blue

–

NOX Sensor – If Equipped

F09

40 Amp Green

–

Diesel / Fuel Heater – If Equipped

F09

30 Amp Pink

–

Gas / Brake Vacuum Pump – If Equipped

F10

40 Amp Green

–

CBC #2 / Ext Lights

F11

40 Amp Green

–

Brake System Module (ECU and Valves)

8

396

SERVICING AND MAINTENANCE

F12

40 Amp Green

–

CBC #3 / Pwr Locks

F13

40 Amp Green

–

Blower Motor

F14

40 Amp Green

–

CBC #4 / Ext Lights

F15

30 Amp Pink

–

Power Side Steps — If Equipped

F16

30 Amp Pink

–

Smart-Bar Module – If Equipped

F17

30 Amp Pink

–

Winch Control Module – If Equipped

F19

30 Amp Pink

–

Diesel SCR Feed– If Equipped

F20

30 Amp Pink

–

Passenger Door Module

F21

30 Amp Pink

–

Drive Train Control Module

F22

20 Amp Blue

–

Gas / ECM– If Equipped

F22

25 Amp White

–

Diesel PCM – If Equipped

F23

30 Amp Pink

–

CBC #1 / Int Light

F24

30 Amp Pink

–

Driver Door Module

F25

30 Amp Pink

–

Front Wiper

F26

—

–

Spare

F27

—

–

Spare

F28

20 Amp Blue

–

Trailer Tow Backup Lights – If Equipped

F29

20 Amp Blue

–

Trailer Tow Parking Lights – If Equipped

F30

30 Amp Pink

–

Trailer Tow Receptacle / Trailer Tow (Separate E-Brake) / Trailer Tow

F31

–

–

Spare

Cavity

Cartridge Fuse

Micro Fuse

Description

SERVICING AND MAINTENANCE

397

F32

–

–

Spare

F33

20 Amp Blue

–

Trans Control Module – If Equipped

F34

30 Amp Pink

–

Vehicle System Interface Module #2 – If Equipped

F35

30 Amp Pink

–

Sunroof – If Equipped

F36

30 Amp Pink

–

Electric Back Light – If Equipped

F37

30 Amp Pink

–

Diesel Frame / Fuel Heater #2– If Equipped

F38

30 Amp Pink

–

Integrated Trailer Brake Module – If Equipped

F39

–

–

Spare

F40

–

10 Amp Red

Ventilated Seats – If Equipped

F41

–

10 Amp Red

Active Grille Shutter / Active Air Dam – If Equipped

F42

–

20 Amp Yellow

Horn

F43

–

15 Amp Blue

Heated Steering Wheel – If Equipped

F44

–

10 Amp Red

Diagnostic Port

F46

–

10 Amp Red

Upfitters Relay Coil – If Equipped

F47

–

–

Spare

F48

–

–

Spare

F49

–

10 Amp Red

IP Cluster / CSG

F50

–

20 Amp Yellow

Air Suspension Control Module – If Equipped

F51

–

10 Amp Red

Ignition Node Module / Keyless Ignition Node Module, Radio Frequency

Hub Module / Electric Steering Column Lock - If Equipped

F52

–

5 Amp Tan

Battery Sensor

Cavity

Cartridge Fuse

Micro Fuse

Description

8

398

SERVICING AND MAINTENANCE

F53

–

20 Amp Yellow

Trailer Tow – Left Turn/Stop Lights - If Equipped

F54

–

20 Amp Yellow

Non Memory Adjustable Pedals - If Equipped

F55

–

–

Spare

F56

–

10 Amp Red

Fuel Vapor Blocker Valve - If Equipped

F57

–

20 Amp Yellow

TCM / PCM / Solenoid Trans Pressure SW (RFE Trans Only) – If Equipped

F58

–

10 Amp Red

Bed Lighting (LED) – If Equipped

F60

–

—

Spare

F61

–

10 Amp Red

NH3 Sensor / PM Sensor – If Equipped

F62

–

10 Amp Red

Air Conditioning Clutch

F63

–

20 Amp Yellow

Ignition Coils / CAPS

F64

–

25 Amp Clear

Fuel Injectors / Powertrain Control Module / SRV – If Equipped

F65

–

10 Amp Red

MOD Inverter (Wake Up) / Power Port / USB IP / WCPM – If Equipped

F66

–

10 Amp Red

Sunroof / USB Rear– If Equipped

F67

–

10 Amp Red

UCI Port / USB Front

F68

–

10 Amp Red

AEB RACAM HTR – If Equipped

F69

–

15 Amp Blue

SCR Module 12 Volt– If Equipped

F70

–

30 Amp Green

Fuel Pump Motor / K09 RLY Coil Feed – If Equipped

F71

–

25 Amp Clear

Amplifier / Active Noise Cancellation – If Equipped

F72

–

—

Spare

F73

–

20 Amp Yellow

Fuel Transfer Pump – If Equipped

Cavity

Cartridge Fuse

Micro Fuse

Description

SERVICING AND MAINTENANCE

399

F74

–

10 Amp Red

Backup Alarm – If Equipped

F75

–

10 Amp Red

ATMM / Coil-SCR Module RLY – If Equipped

F76

–

10 Amp Red

Electronic Stability Control — If Equipped

F77

–

10 Amp Red

Drivetrain Control Module / Front Axle Disconnect Module / TCM/ STOM

F78

–

15 Amp Blue

Engine Control Module / Powertrain Control Module / AEB RACM MOD /

Feed To AUX PDC Relay Coils/ HRLS

F79

–

15 Amp Blue

ID / Clearance Lights

F80

–

10 Amp Red

Overhead Console / Assist / 911 – If Equipped

F81

–

20 Amp Yellow

Trailer Tow Right Turn / Stop Lights - If Equipped

F82

–

10 Amp Red

Steering Column Control Module / Cruise Control

F83

–

–

Spare

F84

–

15 Amp Blue

ASBM / HVAC / ICS / Rear Heated Seat Switches

F85

–

10 Amp Red

Airbag Module

F86

–

10 Amp Red

Airbag Module

F87

–

10 Amp Red

Air Suspension / ITBM / Steering Column Control Module / MOD Gateway

CAN-C Trailer TPM

F88

–

15 Amp Blue

Instrument Panel Cluster

F90/F91

–

20 Amp Yellow

Power Outlet / Batt
Power Outlet / Acc

F92

–

–

Spare

F93

–

–

Spare

Cavity

Cartridge Fuse

Micro Fuse

Description

8

400

SERVICING AND MAINTENANCE

(Continued)

F94

–

10 Amp Red

Shift-By-Wire / Transfer Case Switch / Module TPM Trailer / Module

Gateway Can-C Trailer TPM

F95

–

10 Amp Red

Rearview Camera / Park Assist / CHMSL Camera / Blind Spot Sensor /

Surround View Camera

F96

–

10 Amp Red

Trailer Camera – If Equipped

F97

–

20 Amp Yellow

Front Heated Seat Passenger – If Equipped

F98

–

20 Amp Yellow

Front Heated Seat Driver – If Equipped

F99

–

10 Amp Red

HVAC / In-Car Temperature Sensor / CSG MOD

F100

–

10 Amp Red

Upfitters Box Feed– If Equipped

F101

–

20 Amp Yellow

Rear Heated Seat Right — If Equipped

F102

–

20 Amp Yellow

Rear Heated Seat Left / Run RLY #3 Coil — If Equipped

F103

–

10 Amp Red

HeadLamp AFLS — If Equipped

F104

–

20 Amp Yellow

UCI Port / USB Rear

Cavity

Cartridge Fuse

Micro Fuse

Description

CAUTION!



When installing the power distribution center

cover, it is important to ensure the cover is

properly positioned and fully latched. Failure

to do so may allow water to get into the

power distribution center and possibly result

in an electrical system failure.



When replacing a blown fuse, it is important to

use only a fuse having the correct amperage

rating. The use of a fuse with a rating other than

indicated may result in a dangerous electrical

system overload. If a properly rated fuse

continues to blow, it indicates a problem in the

circuit that must be corrected.

CAUTION!

(Continued)

SERVICING AND MAINTENANCE

401

BULB REPLACEMENT

Replacement Bulbs

NOTE:

See an authorized dealer for LED bulb replacement.

All of the inside bulbs are brass or glass-wedge base. Aluminum base bulbs are not approved.

Interior Bulbs

Bulb Name

Bulb Number

Overhead Console Lamps

TS 212–9

Dome Lamp

7679

NOTE:

For lighted switches, see an authorized dealer for replacement instructions.

Exterior Bulbs

Bulb Name

Bulb Number

Low Beam (Halogen Reflector Headlamp)

H11LL

High Beam (Halogen Reflector Headlamp)

9005LL

Low & High Beam (LED Reflector Headlamp)

LED (Serviced at an authorized dealer)

Low & High Beam (LED Projector Headlamp)

LED (Serviced at an authorized dealer)

Turn Signal / Front Position (Halogen Reflector Headlamp)

7444NA

Turn Signal (LED Projector Headlamp)

LED (Serviced at an authorized dealer)

8

402

SERVICING AND MAINTENANCE

Replacing Exterior Bulbs

Base Quad: Low Beam Headlamp, High Beam

Headlamp, Front Park And Turn — If Equipped
Low Beam
See below steps to replace:

1. Open the hood.

2. Disconnect and isolate the negative battery

cable.

3. Reach into the front wheel house ahead of

the front wheel, remove the fastener, and

lift the cover over the access hole in the

front of the wheel house splash shield.

Access to the rear of the lamp can be gained

through this access hole.

Splash Shield Access Cover

Front Position (LED Headlamps)

LED (Serviced at an authorized dealer)

Turn Signal (LED Reflector Headlamp)

7444NA

Front Side Marker (Headlamps)

LED (Serviced at an authorized dealer)

Front Fog Lamps (Halogen Reflector Headlamp)

H11LL

Front Fog Lamps (LED Headlamp)

LED (Serviced at an authorized dealer)

Side Indicators (Front And Side View Mirror)

LED (Serviced at an authorized dealer)

Center High Mounted Stop Lamp (CHMSL)

921

Cab Roof Marker Lamps

194NA

Box Off Tail Lamps – Stop/Turn/Tail/License Plate

1157

Box Off Tail Lamps – Back Up

1156

Exterior Bulbs

Bulb Name

Bulb Number

SERVICING AND MAINTENANCE

403

4. Reach through the access hole of the wheel

house splash shield and disengage the bulb

access cover by rotating counterclockwise.

Bulb Access Cover

5. Disconnect the internal lamp wiring harness

connector from the low beam bulb.

6. Rotate the bulb counterclockwise a quarter

turn to unlock the bulb from the lamp.

7. Pull the bulb straight out from the housing.

8. Reverse the procedure for installation of

new bulb and covers.

High Beam
See below steps to replace:

1. Open the hood.

2. Disconnect and isolate the negative battery

cable.

Bulb Access Cover

3. Look under the hood and behind the

headlamp to find the high beam bulb

access cover.

4. Reach behind the headlamp and disengage

the access cover by rotating counter

-

clockwise.

5. Disconnect the internal lamp wiring harness

connector from the high beam bulb.

6. Rotate the bulb counterclockwise a quarter

turn to unlock the bulb from the lamp.

7. Pull the bulb straight out from the housing.

8. Reverse the procedure for installation of

new bulb and covers.

CAUTION!



Do not contaminate the bulb glass by

touching it with your fingers or by allowing it

to contact other oily surfaces. Shortened

bulb life will result.



Always use the correct bulb size and type for

replacement. An incorrect bulb size or type

may overheat and cause damage to the

lamp, the bulb socket, or the lamp wiring.

CAUTION!



Do not contaminate the bulb glass by

touching it with your fingers or by allowing it

to contact other oily surfaces. Shortened

bulb life will result.



Always use the correct bulb size and type

for replacement. An incorrect bulb size or

type may overheat and cause damage to

the lamp, the bulb socket, or the lamp

wiring.

8

404

SERVICING AND MAINTENANCE

Outer Park And Turn
See below steps to replace:

1. Open the hood.

2. Disconnect and isolate the negative battery

cable.

3. Reach into the front wheel house ahead of

the front wheel, remove the fastener, and

lift the cover over the access hole in the

front of the wheel house splash shield.

Access to the rear of the lamp can be gained

through this access hole.

Splash Shield Access Cover

4. Reach through the access hole of the wheel

house splash shield and disengage the side

marker socket by rotating counterclockwise

a quarter turn.

Park And Turn Socket

5. Pull the socket and bulb straight out from

the housing.

6. Separate the bulb from the socket without

twisting.

7. Reverse the procedure for installation of

new bulb and covers.

Fog Lamps — If Equipped
Halogen
See below steps to replace:

1. Reach under and behind the front fascia/

bumper to access the back of the front fog

lamp housing.

2. Disconnect the fog lamp wiring harness

connector from the fog lamp bulb.

Fog Lamp Bulb

3. Rotate the bulb counterclockwise a quarter

turn to unlock the bulb from the housing.

4. Pull the bulb straight out from the housing.

5. Reverse the procedure to install the bulb

and cover.

SERVICING AND MAINTENANCE

405

Center High Mounted Stop Lamp (CHMSL) With

Cargo Lamp
See below steps to replace:

1. Remove the two screws holding the

housing/lens to the body as shown.

CHMSL Mounting Screw Locations

2. Separate the connector holding the housing

and wiring harness to the body.

CHMSL Connector Location

3. Turn the desired bulb socket a quarter turn and

remove the socket and bulb from housing.

4. Pull the desired bulb straight from the socket.



Outside Bulbs: Cargo Lamps



Inside Bulb: Center High Mounted Stop Lamp

5. Reverse the procedure for installation of

bulbs and housing.

Cab Top Clearance Lamps — If Equipped
See below steps to replace:

1. Remove the two screws from the top of the

lamp.

Removing Rear Screw From Clearance Lamp

CAUTION!

Do not contaminate the bulb glass by

touching it with your fingers or by allowing it

to contact other oily surfaces. Shortened bulb

life will result.

CAUTION!

Do not contaminate the bulb glass by

touching it with your fingers or by allowing it

to contact other oily surfaces. Shortened bulb

life will result.

8

406

SERVICING AND MAINTENANCE

2. Rotate the bulb socket a quarter turn and

pull it from the lamp assembly.

Removing Bulb Socket From Clearance Lamp

3. Pull the bulb straight from it's socket and

replace.

TIRES

T

IRE

S

AFETY

I

NFORMATION

Tire safety information will cover aspects of the

following information: Tire Markings, Tire

Identification Numbers, Tire Terminology and

Definitions, Tire Pressures, and Tire Loading.

Tire Markings

Tire Markings

NOTE:



P (Passenger) — Metric tire sizing is based on US

design standards. P-Metric tires have the letter

“P” molded into the sidewall preceding the size

designation. Example: P215/65R15 95H.



European — Metric tire sizing is based on

European design standards. Tires designed

to this standard have the tire size molded

into the sidewall beginning with the section

width. The letter "P" is absent from this tire

size designation. Example: 215/65R15 96H.



LT (Light Truck) — Metric tire sizing is based

on US design standards. The size designation

for LT-Metric tires is the same as for P-Metric

tires except for the letters “LT” that are

molded into the sidewall preceding the size

designation. Example: LT235/85R16.



Temporary spare tires are designed for

temporary emergency use only. Temporary

high pressure compact spare tires have the

letter “T” or “S” molded into the sidewall

preceding the size designation. Example:

T145/80D18 103M.



High flotation tire sizing is based on US

design standards and it begins with the tire

diameter molded into the sidewall. Example:

31x10.5 R15 LT.

1 — US DOT Safety Standards Code (TIN)
2 — Size Designation
3 — Service Description
4 — Maximum Load
5 — Maximum Pressure
6 — Treadwear, Traction and Tempera

-

ture Grades

SERVICING AND MAINTENANCE

407

Tire Sizing Chart

EXAMPLE:

Example Size Designation: P215/65R15XL 95H, 215/65R15 96H, LT235/85R16C, T145/80D18 103M, 31x10.5 R15 LT
P = Passenger car tire size based on US design standards, or
". blank. " = Passenger car tire based on European design standards, or
LT = Light truck tire based on US design standards, or
T or S = Temporary spare tire or
31 = Overall diameter in inches (in)
215, 235, 145 = Section width in millimeters (mm)
65, 85, 80 = Aspect ratio in percent (%)



Ratio of section height to section width of tire, or

10.5 = Section width in inches (in)
R = Construction code



"R" means radial construction, or



"D" means diagonal or bias construction

15, 16, 18 = Rim diameter in inches (in)
Service Description:
95 = Load Index



A numerical code associated with the maximum load a tire can carry

8

408

SERVICING AND MAINTENANCE

H = Speed Symbol



A symbol indicating the range of speeds at which a tire can carry a load corresponding to its load index under certain operating conditions



The maximum speed corresponding to the speed symbol should only be achieved under specified operating conditions (i.e., tire pressure, vehicle

loading, road conditions, and posted speed limits)

Load Identification:
Absence of the following load identification symbols on the sidewall of the tire indicates a Standard Load (SL) tire:



XL = Extra load (or reinforced) tire, or



LL = Light load tire or



C, D, E, F, G = Load range associated with the maximum load a tire can carry at a specified pressure

Maximum Load – Maximum load indicates the maximum load this tire is designed to carry
Maximum Pressure – Maximum pressure indicates the maximum permissible cold tire inflation pressure for this tire

EXAMPLE:

SERVICING AND MAINTENANCE

409

Tire Identification Number (TIN)

The TIN may be found on one or both sides of the tire; however, the date code may only be on one side. Tires with white sidewalls will have the full TIN,

including the date code, located on the white sidewall side of the tire. Look for the TIN on the outboard side of black sidewall tires as mounted on the

vehicle. If the TIN is not found on the outboard side, then you will find it on the inboard side of the tire.

EXAMPLE:

DOT MA L9 ABCD 0301
DOT = Department of Transportation



This symbol certifies that the tire is in compliance with the US Department of Transportation tire safety standards and is approved for highway use

MA = Code representing the tire manufacturing location (two digits)
L9 = Code representing the tire size (two digits)
ABCD = Code used by the tire manufacturer (one to four digits)
03 = Number representing the week in which the tire was manufactured (two digits)



03 means the 3rd week

01 = Number representing the year in which the tire was manufactured (two digits)



01 means the year 2001



Prior to July 2000, tire manufacturers were only required to have one number to represent the year in which the tire was manufactured. Example:

031 could represent the 3rd week of 1981 or 1991

8