Where is the EFI relay located?
Location. Most fuel-pump relay units are located under the dashboard near the steering column. In some cases, the unit is located in the area where the steering column is mounted or near the engine’s firewall.
What is the EFI relay?
Your electronic fuel injection (EFI) main relay switches on the EFI computer system when you turn your key. This readies the injectors and pressurizes the system before starting the engine for startup fuel delivery. This relay may be controlled by your ignition switch directly, or by your ECU.
Where is the fuse pump relay?
In most car models, the fuel pump relay is located in a fuse box somewhere under your dashboard, but it can also be located in the fuse box in the engine bay. The engine’s or the dashboard fuse box is usually a long black box containing a fuel pump relay and various other fuses and relays.
What is a f HTR fuse?
A/F heater fuse may also be referred to as A/F fuse. A/F heater relay is energized by MREL terminal of Engine Control Module (ECM). When A/F heater relay is energized, A/F heater relay provides battery voltage to +B terminal at A/F sensors. For A/F heater relay location, see A/F HEATER RELAY LOCATION table.
How do I know if its the fuel pump or relay?
How to tell if fuel pump relay is bad (6 Signs)
- Check Engine Light (CEL) Illuminated. In most cases, the primary symptom is a check engine light.
- High Mileage.
- Long Starting Time.
- Engine Performance Issues – Stalling, Idling, Acceleration, Not Starting.
- Car dies while driving.
- Silent Fuel Pump Noise.
Where is the circuit opening relay on a Toyota Tacoma?
If anyone has a 2001 Toyota Truck Tacoma Extra Cab 4WD V6-3.4L (5VZ-FE) and could you take a picture of the relay and the location it would be greatly appreciated because I have exhausted the internet looking for it.
How can I tell if my relay is open or closed?
Simply power up the primary circuit with the battery, and then check the secondary circuit to see if it’s open or closed. The primary circuit is the ‘side’ with the smaller terminal pins or wires, and it is the control side, powered by a low current circuit.
Where are the fuses on a Toyota 4Runner?
Fuse box diagram (fuse layout), location, and assignment of fuses and relays Toyota 4Runner (N180) (1996, 1997, 1998). The fuses are designed to blow before the entire wiring harness is damaged. If any of the electrical components do not operate, a fuse may have blown. If this happens, check and replace the fuses as necessary.
Which is the ground side of the circuit opening relay?
The start side of the ignition supplies the control side of the circuit opening relay and the ground side of this control is the ECM. So in a nut shell, the circuit opening relay closes and turns on the fuel pump when cranking.