Wipers won't turn off
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Joined: Jun 2017
Posts: 1,225
Did you perform a test on number 12. When the fuse is out test the fuse port with the switch on and off. If you are getting a signal when it is off then it is something at the switch if it's operating as it should then it's beyond the switch. I would start at the motor connector with a test. To see at why point is it getting power.
Last edited by Seanjordan20; Jul 5, 2018 at 09:41 PM.
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Joined: Oct 2010
Posts: 7,099
From: United States
Some possible culprits:
1. Make sure your car battery is fully charged. A low battery can cause problems with electronics. Check the battery.
2. Faulty Multiplex Integrated Control Unit (MICU) that is integrated into the under-dash fuse/relay box.
3. Faulty Relay Circuit Board that is part of the under-hood fuse/relay box.
4. Short to ground in wiring.
********************************************
Although you already replaced the wiper switch, unplug the wiper harness connector and turn the Ignition switch to IG1. If the wipers run, this would definitely rule out the switch.
********************************************
1. Make sure your car battery is fully charged. A low battery can cause problems with electronics. Check the battery.
2. Faulty Multiplex Integrated Control Unit (MICU) that is integrated into the under-dash fuse/relay box.
3. Faulty Relay Circuit Board that is part of the under-hood fuse/relay box.
4. Short to ground in wiring.
********************************************
Although you already replaced the wiper switch, unplug the wiper harness connector and turn the Ignition switch to IG1. If the wipers run, this would definitely rule out the switch.
********************************************
To reiterate, the above are some of the possible culprits.
Have you unplugged the wiper harness connector to check yet?
Just for information (see attached photo):
The relay circuit board consist of several relays, one of which is for the wipers. If it was faulty, it would be replaced as an assembly.
The wiper motor fuse is part of the under-hood Multi Block Fuse; so, it is not an individually separated fuse like some of the other mini fuses.
Joined: Oct 2024
Posts: 1
Have this issue been solved?
did you find the issue. I have a 15 civic with same issue
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Joined: Sep 2006
Posts: 16,331
From: Houston, TX
I can't give specifics on the 2015 Civic, because I don't have a wiper diagram. The wiper motor has to have a relay or relays to power the motor. The relay could be a normal replacable version in a fuse box or integrated into some control unit.
If you can find the wiper motor relay, then you can do some electrical troubleshooting to split the system in half. Meaning you can figure out if the root cause is a bad signal upstream of the relay, or something wiring wise downstream of the relay.
When the wipers act up, do you have any control over them with the wiper switch?
If you can find the wiper motor relay, then you can do some electrical troubleshooting to split the system in half. Meaning you can figure out if the root cause is a bad signal upstream of the relay, or something wiring wise downstream of the relay.
When the wipers act up, do you have any control over them with the wiper switch?
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