Smart Junction Box (SJB)
CAUTION:
When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.
NOTE:
For component location, see ELECTRICAL COMPONENT LOCATOR
article.
SMART JUNCTION BOX (SJB) RELAY IDENTIFICATION
| RELAY DESCRIPTION |
|---|
| Accessory Delay Relay |
SMART JUNCTION BOX FUSE IDENTIFICATION LEGEND
| Fuse | Amps | Circuits protected |
|---|---|---|
| F1 | 30 | Power window motor, driver side front |
| F2 | 15 | Driver Seat Module (DSM) |
| F3 | 15 | Audio Rear Control Unit (RCU). Satellite Digital Audio Receiver System (SDARS) module, Rear Entertainment Module (RETM) Accessory Protocol Interface Module (APIM) |
| F4 | 30 | Power window motor, passenger side front (Navigator) |
| F5 | 10 | Keyless entry pad, Brake shift interlock, Third row power seats |
| F6 | 20 | Turn signals |
| F7 | 10 | Left low beam headlamp |
| F8 | 10 | Right low beam headlamp |
| F9 | 15 | Remote start connector, Interior lamps |
| F10 | 15 | Puddle lamps, Switch illumination |
| F11 | 10 | Not used |
| F12 | 7.5 | Exterior rear view mirror switch, Seat control switch, left (with memory) |
| F13 | 5 | Not used |
| F14 | 10 | Liftgate/Trunk Module (LTM), Clock (Navigator) |
| F15 | 10 | HVAC module, EMTC, HVAC module, DATC |
| F16 | 15 | Not used |
| F17 | 20 | Driver door unlock relay, Door lock relay, Liftgate glass release relay, Smart Junction Box (SJB) |
| F18 | 20 | Heated seat module, rear - Second row seats |
| F19 | 25 | Rear wiper motor assembly |
| F20 | 15 | Adjustable pedal switch (without memory), Data Link Connector (DLC) |
| F21 | 15 | Fog lamp relay, Fog lamps Fog lamp indicator |
| F22 | 15 | Park lamp relay, Park lamps |
| F23 | 15 | High beam relay, High beam headlamps |
| F24 | 20 | Horn relay, Horn |
| F25 | 10 | Battery saver relay, Demand lamps |
| F26 | 10 | Instrument Cluster (IC) |
| F27 | 20 | Ignition switch, Key release interlock actuator |
| F28 | 5 | Audio Control Module (ACM) |
| F29 | 5 | Instrument Cluster (IC) |
| F30 | 5 | Not used |
| F31 | 10 | Not used |
| F32 | 10 | Restraints Control Module (RCM) |
| F33 | 10 | Not used |
| F34 | 5 | Not used |
| F35 | 10 | 4X4 Control Module, Parking Aid Module (PAM). Video camera, Heated seat module, rear |
| F36 | 5 | Passive anti-theft transceiver |
| F37 | 10 | HVAC module, EMTC, HVAC module, DATC |
| F38 | 20 | Subwoofer amplifier (with premium sound), Audio Digital Signal Processing (DPS) module (Navigator with THX audio) |
| F39 | 20 | Audio Control Module (ACM) |
| F40 | 20 | Audio Digital Signal Processing (DSP) module (Navigator with THX audio). Audio Control Module (ACM) Amplifier (Expedition) |
| F41 | 15 | Master window adjust switch (Navigator). Power window switch RH side front (Navigator). Power window motor, driver side front, Power window motor, passenger side front (Navigator), Quarter window open relay, Quarter window close relay, Roof opening panel module, Door lock switch, driver side (Expedition), Door lock switch, passenger side (Expedition). |
| F42 | 10 | Not used |
| F43 | 10 | Rear wiper motor assembly. Rain sensor module |
| F44 | 10 | Trailer tow relay, battery charge |
| F45 | 5 | Front wiper relay. Windshield wiper motor assembly |
| F46 | 7.5 | Auxiliary blower motor relay 1, Auxiliary blower motor relay 2 Auxiliary blower motor relay 3 |
| F47 | 30 Circuit Breaker | Master window adjust switch |