RAM 1500 2021 Owners Manual

SERVICING AND MAINTENANCE429
F06–10 Amp Red OUTPUT TO UPFITTER PDC — If Equipped
F07 ––Spare
F08 20 Amp Blue –Trailer Tow Backup
F09 –20 Amp Yellow Trailer Stop / Turn Lamp Left
F10 –20 Amp Yellow Trailer Stop / Turn Lamp Right
F11 –15 Amp Blue ID/CLEARANCE LIGHTS — If Equipped
F12 20 Amp Blue –Trailer Tow Park Lamp
F13 ––Spare
F14 –10 Amp Red AC Clutch
F15 –5 Amp Tan Intelligent Battery Sensor (IBS)
F16 ––Spare
F17 –20 Amp Yellow Air Suspension
F18 –15 Amp Blue AGS / Rear Axle Cooling Valve / Active Air Dam
F19 ––Spare
F20 –20 Amp Yellow Adjustable Pedals
F21 30 Amp Pink –Power Side Step
F22 50 Amp Red –Air Module
F23 ––Spare
F24 –20 Amp Yellow TCM SBW
F25 40 Amp Green –Exterior Lights 2
Cavity Cartridge Fuse Micro Fuse Description
8

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430SERVICING AND MAINTENANCE
F2650 Amp Red –ESP Module
F27 30 Amp Pink –Front Wiper
F28 –10 Amp Red PCM / ECM
F29 40 Amp Green –ESP Module
F30 ––Spare
F31 ––Spare
F32 20 Amp Blue –ECM / PCM
F33 30 Amp Pink –Brake Vacuum Pump
F34 ––Spare
F35 –10 Amp RedPCM / ECM / Power Pack Unit (PPU) Motor Generator Unit (MGU)
Wake Up / EPS / Active Tuned Mass Module (ATMM) / ESP
F36 ––Spare
F37 –5 Amp Tan R / S Output to iPDC
F38 –10 Amp Red DTCM / Active CL TEMP VLV
F39 –15 Amp Red MOD ATMM
F40 40 Amp Green –Starter
F41 –10 Amp Red IRCAM Heaters
F42 20 Amp Blue –AUX SWITCH #5 — If Equipped
F43 –20 Amp Yellow MGU Coolant Pump
F44 –10 Amp Red Trailer Camera
F45 –10 Amp Red ADCM — If Equipped
CavityCartridge Fuse Micro Fuse Description

21_DT_OM_EN_USC_t.book Page 430

SERVICING AND MAINTENANCE431
F4630 Amp Pink –Fuel Heater
F47 30 Amp Pink –Rear Defroster
F48 ––Spare
F49 30 Amp Pink –Htr Ctrl (Diesel Only)
F50 20 Amp Blue –AUX SWITCH #6 — If Equipped
F51 25 Amp White –FUEL PUMP MOTOR #1 — If Equipped
F52 ––Spare
F53 –10 Amp Red Supply / Purging Pump – If Equipped
F54 –15 Amp Blue PCM
F55 –15 Amp Blue Right HID Headlamp
F56 ––Spare
F57 –20 Amp Yellow Horn
F58 25 Amp White –FUEL PUMP MOTOR #2 — If Equipped
F59 –25 Amp Clear Injectors / IGN Coil / Glow Plug Module
F60 –20 Amp Yellow ECM / PCM / ACT Short Running Valve
F61 –15 Amp Blue Left HID Headlamp / Spare
F62 60 Amp Blue
40 Amp Green –
Glow Plug (DSL) / LTR Coolant Pump (TRX)
F63 20 Amp Blue –NOx Sensor
F64 –10 Amp Red PM Sensor – If Equipped
CavityCartridge Fuse Micro Fuse Description
8

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432SERVICING AND MAINTENANCE
Internal Power Distribution Center
The Power Distribution Center is located under
the drivers side instrument panel. 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.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.
CavityCartridge Fuse Micro Fuse Description
F0130 Amp Pink –Trailer Tow Receptacle
F03 –20 Amp Yellow Module Seat Heater Front (Pass)
F04 ––Spare
F05 –20 Amp Yellow Module PPU Cooling Fan
F06 ––Spare
F07 40 Amp Green –Mod CBC 3 PWR Locks
F08 ––Spare

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SERVICING AND MAINTENANCE433
F09––Spare
F10 40 Amp Green –HVAC Blower Motor
F11 –5 Amp Tan Output to Under-hood Power Distribution Center (UPDC) Run Coil
F12 –25 Amp Clear Mod Audio Amplifier / Active Noise Cancellation / SW Inverter
F13 –20 Amp Yellow Mod Seat Heater Front (Driver)
F14 –15 Amp Blue Mod Seat Heater Front (Steering Wheel)
F15 ––Spare
F16 ––Spare
F17 –20 Amp Yellow LT Spot Lamp — If Equipped
F18 30 Amp Pink –Motor Sunshade Sunroof
F19 ––Spare
F20 –20 Amp Yellow Comfort Rear Seat Module (CRSM) (Heat Rear RT)
F21 ––Spare
F22 ––Spare
F23 ––Spare
F24 –15 Amp Blue Mod RF Hub / Mod Ignition / Mod Cluster
F25 40 Amp Green –Mod Integrated Trailer Brake
F26 –15 Amp Blue Mod Cluster CCN / Mod Cyber Security
F27 –5 Amp Tan Mod Cluster CCN / Mod SGW
F28 –10 Amp Red Mod ORC
CavityCartridge Fuse Micro Fuse Description
8

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434SERVICING AND MAINTENANCE
F29–20 Amp Yellow Mod CRSM (Heat Rear LT)
F30 30 Amp Pink –Mod DTCM / Mod Tailgate
F31 30 Amp Pink –Mod CBC 1 Interior Light
F32 –20 Amp Yellow RT Spot Lamp — If Equipped
F33 –10 Amp RedAssy Overhead Console / Switch 911 / Switch Assist / Heads Up
Display (HUD)
F34 –15 Amp Blue Frt & RR Ventilated Seat Motor
F35 –10 Amp RedMod Inverter / Mtr Sunshade Sunroof / Mtr Dual Sunroof / USB
Charge Only
F36 40 Amp Green –Mod CBC 2 Exterior Light 1
F37 ––Spare
F38 ––Spare
F39 ––Spare
F40 20 Amp Blue –Dome Pursuit Vehicle — If Equipped
F41 A&B –15 Amp BlueLumbar Support & Pass SW / Mod ICS Sw Bank / HVAC Ctrl / Sw
Bank Upper / Mod Ctrl Steering
F42 A&B –10 Amp RedMod Transfer Case Switch Module (TCSM) / SBW / Electric Park
Brake SW / Overhead Console (OHC) SW / E-Call / Bank 3 SW / Seat
LT & RT Vent / Mod Trailer A&B Tire Pressure / Mod Gateway Trailer
F43 A&B –10 Amp Red Port Diagnostics / Mod CD / Front & Rear USB
F44 –20 Amp Yellow Radio / DCSD / Telematics Box Mod / Fleet Telematics Module
(FTM)
Cavity
Cartridge Fuse Micro Fuse Description

21_DT_OM_EN_USC_t.book Page 434

SERVICING AND MAINTENANCE435
F4530 Amp Pink –Mod Door MUX Driver
F46 30 Amp Pink –Mod Door MUX Passenger
F47 A&B ––Spare
F48A -10 Amp RedRear View Mirror / SW Window Passenger / Rear USB / Wireless
Charging Pad Mod
F49 –15 Amp BlueMod CVPM / SNSR Blind Spot / HDLP Adaptive Front Lighting
Sensor (AFLS)
F50A –10 Amp Red Battery PACK Control Mod
F51 A&B ––Spare
F52 20 Amp Blue –Direct Battery Feed — If Equipped
F53 –10 Amp Red Trailer Reverse Steering Control / Trailer Steering Control Knob
F54B –20 Amp Yellow Power Outlet Center Seat
F55 25 Amp White –Upfitter — If Equipped
F56 30 Amp Pink –Mod Network Interface — If Equipped
F57 20 Amp Blue –Direct Battery Feed — If Equipped
F58 20 Amp Blue –Direct Battery Feed — If Equipped
F60 50 Amp Red –Mod Inverter
F61 ––Spare
F62 A&B –10 Amp RedITBM / Mod Occupant Class / Mod IAIR Suspension / Mod HVAC
Snsr Incar Temp / Rear Coolant Temp / PTS / Mod IRCM / HRLS /
Mod Gateway Trailer TPM
Cavity
Cartridge Fuse Micro Fuse Description
8

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436SERVICING AND MAINTENANCE
F63––Spare
F64 ––Spare
F65 –10 Amp Red Mod ORC
F66 –10 Amp Red Run Accessory Feed — If Equipped
CavityCartridge 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.

21_DT_OM_EN_USC_t.book Page 436

SERVICING AND MAINTENANCE437
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 / Front Position (LED Headlamps) LED (Serviced at an authorized dealer)
8

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438SERVICING AND MAINTENANCE
Front Side Marker (Halogen Reflector Headlamp) W5W
Front Side Marker (LED Headlamps) LED (Serviced at an authorized dealer)
Front Fog Lamps (Halogen Reflector Headlamp) H11LL
Front Fog Lamps (LED Headlamps) LED (Serviced at an authorized dealer)
Side Indicators (Front And Side View Mirror) LED (Serviced at an authorized dealer)
Base Rear Tail/Turn and Stop Lamp 7440LL/W21WLL
Premium Rear Tail/Turn/Backup and Stop Lamp LED (Serviced at an authorized dealer)
Base Backup Lamp 7440/W21W
Center High Mounted Stop Lamp (CHMSL) 921
Cargo Lamp 921
Rear License Plate Lamp LED (Serviced at an authorized dealer)
Base Turn Lamp 7440NA / WY21W
Exterior Bulbs
Bulb Name Bulb Number

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