Blower motor fuse and relays

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Nov 1, 2018 | 04:46 PM

Jsl9299

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Blower motor fuse and relays

I have a 2003 Honda Civic Si and need to know where the power and ground comes from along with the fuses and relays locations.

Nov 3, 2018 | 12:14 PM

thisguyaves

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From: Cental North Carolina

Re: Blower motor fuse and relays

Ground is to the chassis. If you are having problems, it's power related, and that fuse is under the driver side dash footwell area.

Nov 3, 2018 | 01:17 PM

tech8

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Re: Blower motor fuse and relays

Quote:

Originally Posted by Jsl9299

I have a 2003 Honda Civic Si and need to know where the power and ground comes from along with the fuses and relays locations.

1. Determine whether the issue is on the power (+) or the ground (-) side.

Disconnect the harness connector to the blower motor and verify whether there is power (+) on the Blu/Wht wire terminal with the ignition ON. If there is power on that wire, then the fuses and relay is good; and the issue would be the ground side.
The ground to the motor runs through the power transistor or heater control panel; and is controlled by the heater control panel.

2. You can also check if the issue is on the ground side (plug back the connector to the blower motor first):

Unplug the electrical connector to the blower power transistor unit.
Attach a jumper wire (short piece of wire) from the Blue/Black wire cavity to the Black wire cavity on the unplugged electrical connector. Leave the connector unplugged.
Turn the ignition ON. The blower motor should run.