Understanding your 2006 Saturn Vue’s fuse box is crucial for diagnosing and resolving electrical issues. Fuses protect your vehicle’s electrical circuits from overloads, and knowing their locations and functions can save you time and money on repairs. This guide will walk you through the fuse box locations and diagrams for your 2006 Saturn Vue, with a focus on fuses that might be related to your OBD2 port and diagnostic system.
The 2006 Saturn Vue has two main fuse box locations: the Instrument Panel Fuse Block and the Underhood Fuse Block. Each fuse box serves different vehicle systems, and understanding their layouts is essential for effective troubleshooting.
Instrument Panel Fuse Block Diagram
The Instrument Panel Fuse Block is located inside the vehicle, typically on the driver’s side, often behind a panel on the dashboard or side of the instrument panel. This fuse box controls many of the interior electrical functions of your Saturn Vue.
| Type | No. | Description |
|---|---|---|
| Fuse MINI | 1 | (CRUISE) Cruise Control Switch, Brake Switch |
| Fuse MINI | 2 | (EPS) Electronic Power Steering |
| Fuse MINI | 3 | (IGN 1) Instrument Cluster, Brake Transmission Shift Interlock Solenoid, Traction Switch, Fog Lamp Switch |
| Fuse MINI | 4 | (LOCK/MIRROR) Power Door Locks, Power Mirror, Entry Control |
| Fuse MINI | 5 | (BCM) Body Control Module, Front Wipers, Windows, Sunroof |
| Fuse MINI | 6 | (BCM (IGN 1)) Body Control Module |
| Fuse MINI | 7 | (AIR BAG) Sensing and Diagnostic Module |
| Fuse MINI | 8 | (RADIO (IGN)) Radio, Power Mirror, Premium Radio Amplifier |
| Fuse MINI | 9 | (TURN) Turn Lamps |
| Fuse MINI | 10 | (HVAC) HVAC Control Head |
| Fuse MINI | 11 | (HAZARD) Hazard Lamps |
| Fuse MINI | 12 | (HTD SEATS) Heated Seats |
| Fuse MINI | 13 | (RADIO) Radio, Data Link Connector |
| Fuse MINI | 14 | (PARK) Park Lamps, Taillamps, Side Marker Lamps, License Lamps |
| Fuse MINI | 15 | (BCM/CLUSTER) Body Control Module, Instrument Cluster |
| Fuse MINI | 16 | (INT LTS) Body Control Module, OnStar |
| Fuse MINI | 17 | (DR LKS) Door Locks |
| Relay | R18 | (AFTER BLOW) Not Used |
| Relay | R19 | (HVAC BLOWER) HVAC Control Head |
| Relay | R20 | (PK LP) Parking Lamps |
| Relay | R21 | (DR LCK) All Door Lock Switch |
| Relay | R22 | (PSG DR UNLCK) Passenger Door Unlock Switch |
| Relay | R23 | (DRV DR UNLCK) Driver Door Unlock Switch |
| Relay | R24 | (HDLP) Headlamps |
Notably, Fuse #13 in the Instrument Panel Fuse Box is labeled “(RADIO) Radio, Data Link Connector.” The “Data Link Connector” is another name for the OBD2 port. If you are experiencing issues with your OBD2 scanner connecting to your 2006 Saturn Vue, this fuse should be one of the first things you check. A blown fuse here could prevent power from reaching the OBD2 port, thus inhibiting communication with diagnostic tools.
Underhood Fuse Block Diagram
The Underhood Fuse Block is located in the engine compartment, usually near the battery. This fuse box manages fuses and relays for critical engine and vehicle control systems.
| Type | No. | Description |
|---|---|---|
| Fuse MINI | 1 | Battery Voltage to ECM, TCM, PCM [3.5L V6 (L66)] |
| Fuse MAXI | 2 | Instrument Panel Fuse Box |
| Fuse MINI | 3 | Horn |
| Fuse MAXI | 4 | Anti-lock Brake System Battery |
| Fuse MINI | 5 | Rear Defogger |
| Fuse MAXI | 6 | Cooling Fans High (L4)/Cooling Fan 1 (V6) |
| Fuse MINI | 7 | Fog Lamps |
| Fuse MINI | 8 | Driver’s Side Headlamp |
| Fuse MINI | 9 | Rear Wiper |
| Fuse MINI | 10 | Anti-lock Brake System Module |
| Fuse MAXI | 11 | Power Window Relay and Sunroof |
| Fuse MINI | 12 | Cigarette Lighter |
| Fuse MAXI | 13 | HVAC Blower Motor |
| Fuse MINI | 14 | Right Headlamp |
| Fuse MINI | 15 | Front Wiper |
| Fuse MINI | 16 | Engine Control Module (ECM), Electronic Throttle Control (V6) |
| Fuse MINI | 17 | Sunroof Module |
| Fuse MINI | 18 | Stoplamps |
| Fuse MAXI | 19 | Ignition switch |
| Fuse MINI | 20 | Engine Ignition Module, Fuel Injectors (2.2L L4 (L61)) Camshaft Sensor, Main Relay Voltage To PCM, Ignition Coils 1-6 |
| Fuse MINI | 21 | Fuel Injection |
| Fuse MINI | 22 | Engine Control Module (ECM), Transaxle Control Module (TCM), Transaxle, L66 Powertrain Control Module (PCM) |
| Fuse MINI | 23 | Low Coolant Switch, Backup Lamps (2.2L L4 (L61)), Vehicle Speed Sensor (Manual), Transaxle Range Switch (2.2L L4 (L61)) |
| Fuse MINI | 24 | Heated Seats |
| Fuse MAXI | 25 | Cooling Fan Low (L4), Cooling Fan (V6) |
| Fuse MINI | 26 | Air Conditioning Clutch, Back Up Lamps (3.5L V6 (L66)) |
| Fuse MINI | 27 | Fuel Pump |
| Fuse MINI | 28 | Front Auxiliary Power Outlet |
| Fuse MINI | 29 | Premium Radio Amplifier |
| Fuse MINI | 30 | Anti-lock Brake System Ignition |
| Fuse MAXI | 31 | Power Seats |
| Relay | R1 | Fog Lamps |
| Relay | R4 | Cooling Fan Motor High |
| Relay | R5 | Engine Control Module/CAM, Emissions, Injectors, Electronic Throttle Control |
| Relay | R6 | Rear Defog System |
| Relay | R3 | Horn |
| Relay | R2 | Daytime Running Lamps |
| Relay | R7 | Wiper System |
| Relay | R8 | Power Window Switch, Sunroof Module |
| Relay | R9 | Front Wiper System |
| Relay | R10 | Cooling Fan Motor Low |
| Relay | R11 | Air Conditioning Clutch |
| Relay | R12 | Back-up Lamps (V6) |
| Relay | R13 | Fuel Pump System |
| Relay | R14 | Rear Wiper System |
| Fuse puller | 48 | Extraction tool for fuse replacement. |
| Diode | 49 | Air Conditioning Diode |
| Fuse MINI | ** | Emissions |
| R38 | Cooling Fan | |
| R47 | Cooling Fan (V6) |
While there isn’t a fuse explicitly labeled “OBD2” or “Diagnostic Port” in the Underhood Fuse Block, several fuses are vital for the engine control systems that the OBD2 port interfaces with. Fuses #1, #16, and #22, which relate to the ECM (Engine Control Module), TCM (Transmission Control Module), and PCM (Powertrain Control Module), are crucial. A problem with any of these fuses could indirectly affect OBD2 communication by disrupting the systems that the diagnostic port reads.
Troubleshooting OBD2 Port Issues
If you suspect a fuse is the reason your OBD2 port isn’t working on your 2006 Saturn Vue, follow these steps:
- Locate the Instrument Panel Fuse Box and the Underhood Fuse Box using the diagrams provided.
- Identify Fuse #13 in the Instrument Panel Fuse Box. This is the most likely fuse directly related to the OBD2 port.
- Check for blown fuses. Visually inspect the fuse. A blown fuse will typically have a broken wire inside.
- Use a fuse puller (often found in one of the fuse boxes) to safely remove the fuse.
- Replace any blown fuses with a fuse of the same type and amperage.
- Test your OBD2 scanner to see if the issue is resolved.
If replacing Fuse #13 in the Instrument Panel Fuse Box doesn’t solve the problem, check fuses #1, #16, and #22 in the Underhood Fuse Box, as issues with these can also impact OBD2 functionality. Consult your 2006 Saturn Vue owner’s manual for more detailed information on fuse locations and specifications. If you’re still experiencing problems after checking these fuses, it’s recommended to consult a qualified mechanic for further diagnosis and repair.
