What should the voltage be on a blower motor?

If those are OK than backprobe the blower motor connector and check for power on terminal 1. Check terminal 2 for a variable voltage, this should be 12v with the fan control knob on off and 5v or full ground on full. If that checks out replace the blower motor.

Where is the blower motor on a Sentra?

P.S. the blower motor is behind the dashboard in my car. It looks like that year Sentra uses a field effect transistor and not a traditional resister. It’s referred to as the Fan Control Amplifier and controls the ground circuit of the blower motor.

Where are the fuses on a blower motor?

Check fuses 10 & 11 in the underdash fusebox. If those are OK than backprobe the blower motor connector and check for power on terminal 1. Check terminal 2 for a variable voltage, this should be 12v with the fan control knob on off and 5v or full ground on full.

What is the new TSB number for the blower?

1) The old part number 7C3Z-19E624-C has been replaced by 9L3Z19E624B and no longer requires the rewiring TSB in previous posts.

Do you need to read the instruction manual for a blower?

Because a blower is gasoline-powered and produces a strong air blast, special safety pre- cautions must be observed to reduce the risk of personal injury. It is important that you read, fully understand and observe the following safety precautions and warnings. Read the instruction manual and the safety precautions periodically.

How do you attach a debris blower to a frame?

Position the debris blower on a flat, level surface. Insert the hitch tube into the frame brackets (Figure 4 ). Secure the tube to the frame with 2 bolts (3/8 x 3 inches) and flange nuts (3/8 inch) and torque to 40 N⋅m (30 ft-lb).

How do you adjust the blower hitch clevis?

Adjust the blower hitch clevis to the same level as the tow vehicle hitch as follows: Set the hitch tube on a jack stand to keep it parallel to the ground. Remove the bolts and locknuts securing the hitch clevis (Figure 4 ) to the hitch tube.

How to replace a Ford Expedition heater blower?

Open the glove box and remove Connector C297 from the Heater Blower Controller Module (HBCM). Remove the right front door scuff plate. Remove the right side kick panel to gain access to Ground G200. Cut black/white wire about 8″ (20.3 cm) from C297.

How can you tell if a motor is grounded?

A multimeter has voltage, amperage and resistance settings. Ohmmeters read resistance. Touch one of the meter’s probes to the motor’s case. If the manufacturer painted the motor’s case, then scrape the paint from a small area with a screwdriver and then place the meter probe on the bare spot.

What causes a motor winding to go to ground?

The wire in the windings use an insulating covering as an isolation barrier. If the winding’s insulation wears away near the motor’s case, the bare-wire winding shorts to ground.

How does a blower motor work in a car?

Carmakers use these three common wiring methods to supply power and ground to the blower motor in a manual system using a blower motor resistor. In one design, the car maker supplies battery power to the speed switch, which switches the power to the appropriate connection on the blower motor resistor.

What causes a blower motor to stop working?

In a situation where the motor doesn’t work on any speed, the most likely causes are: a blown power supply fuse, a bad motor ground connection, bad motor speed control module or a failed motor. On all systems, a failed blower motor is least likely. Blower motors generally don’t fail out of the clear blue.

How can you tell if a motor winding is grounded?

Touch the meter’s second probe to one of the motor’s wire terminals. Read the meter. The meter should read infinite. If not, then the motor’s windings are shorted to ground.