Regulator/rectifier
Moderator: Modsquad
Regulator/rectifier
Anyone know which one is used on the PCX125 and where it is physically located?
- sendler2112
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Re: Regulator/rectifier
The charging is done by the AC generator/ starter. It looks like the charging and rectification is controlled by the main ecu. Is your bike not charging? Have the battery tested. Most auto parts stores will do this for free if you bring it in.
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http://www.hondapcx.org/viewtopic.php?f ... gram#p8138
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http://www.hondapcx.org/viewtopic.php?f ... gram#p8138
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Re: Regulator/rectifier
Hmmm.... a little more complicated than I thought. The battery is fine, it's just a lack of charging voltage to it.
- maddiedog
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Re: Regulator/rectifier
The AC generator / starter is referred to as a stator. It's on the right side of the bike, in front of where the swingarm mounts to the motor, and behind where the cooling fan shroud is. Disassembly is on pages 13-1 to 13-9 or the US service manual.
Are you having trouble with starting your bike?
Are you having trouble with starting your bike?
Currently ride: Nothing right now - mostly mountain biking with my boys until they're old enough to ride
Previously rides: 2011 Honda PCX 125, 2005 V-Strom DL650, 1974 Vespa Ciao, 2011 Honda PCX 170 (tons of mods - takegawa 170cc big bore kit, gears, etc), 1996 Honda Nighthawk 250, 1987 Honda Spree, 2000 KTM 125SX, 2003 Honda Silverwing, 2007 Genuine Buddy 125, 1998 Honda PC800, 2008 Buddy 125 (white), 2008 Buddy 125 (red), 2001 Honda Reflex, 1987 Honda Elite, 1988 Honda Spree, 2007 Yamaha Vino, 2007 Honda Metro, 2x 125cc pure-chinesium dirt bikes

Previously rides: 2011 Honda PCX 125, 2005 V-Strom DL650, 1974 Vespa Ciao, 2011 Honda PCX 170 (tons of mods - takegawa 170cc big bore kit, gears, etc), 1996 Honda Nighthawk 250, 1987 Honda Spree, 2000 KTM 125SX, 2003 Honda Silverwing, 2007 Genuine Buddy 125, 1998 Honda PC800, 2008 Buddy 125 (white), 2008 Buddy 125 (red), 2001 Honda Reflex, 1987 Honda Elite, 1988 Honda Spree, 2007 Yamaha Vino, 2007 Honda Metro, 2x 125cc pure-chinesium dirt bikes
Re: Regulator/rectifier
maddiedog wrote:The AC generator / starter is referred to as a stator. It's on the right side of the bike, in front of where the swingarm mounts to the motor, and behind where the cooling fan shroud is. Disassembly is on pages 13-1 to 13-9 or the US service manual.
Are you having trouble with starting your bike?
Only when the battery has gone flat

- you you
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Re: Regulator/rectifier
Is it not charging or do you have a current drain?
Re: Regulator/rectifier
It's not charging.
Re: Regulator/rectifier
Could be a duff battery.
It's happened before on the PCX I think Honda got supplied a dodgy batch.
There's been a few replaced under warranty.
It's happened before on the PCX I think Honda got supplied a dodgy batch.
There's been a few replaced under warranty.
Four decades on two wheels has taught me nothing, all advice given is guaranteed to be wrong
Re: Regulator/rectifier
There have been a number of posts with duff batteries and a battery can seem fine when not under load but is still the cause. I would try a new battery first.
- maddiedog
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Re: Regulator/rectifier
Your location is not listed in your profile... If you're in the USA, you can remove your battery and take it to a Wal-Mart. In the automotive section, they have a battery tester you can use for free to check if the battery is good or not.
Currently ride: Nothing right now - mostly mountain biking with my boys until they're old enough to ride
Previously rides: 2011 Honda PCX 125, 2005 V-Strom DL650, 1974 Vespa Ciao, 2011 Honda PCX 170 (tons of mods - takegawa 170cc big bore kit, gears, etc), 1996 Honda Nighthawk 250, 1987 Honda Spree, 2000 KTM 125SX, 2003 Honda Silverwing, 2007 Genuine Buddy 125, 1998 Honda PC800, 2008 Buddy 125 (white), 2008 Buddy 125 (red), 2001 Honda Reflex, 1987 Honda Elite, 1988 Honda Spree, 2007 Yamaha Vino, 2007 Honda Metro, 2x 125cc pure-chinesium dirt bikes

Previously rides: 2011 Honda PCX 125, 2005 V-Strom DL650, 1974 Vespa Ciao, 2011 Honda PCX 170 (tons of mods - takegawa 170cc big bore kit, gears, etc), 1996 Honda Nighthawk 250, 1987 Honda Spree, 2000 KTM 125SX, 2003 Honda Silverwing, 2007 Genuine Buddy 125, 1998 Honda PC800, 2008 Buddy 125 (white), 2008 Buddy 125 (red), 2001 Honda Reflex, 1987 Honda Elite, 1988 Honda Spree, 2007 Yamaha Vino, 2007 Honda Metro, 2x 125cc pure-chinesium dirt bikes
Re: Regulator/rectifier
I'm in the UK. The battery is fine, it's been tested by a specialist battery supplier. There is no difference in voltage across the terminals when the engine is running and revving therefore it is not charging on the scooter.
- maddiedog
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Re: Regulator/rectifier
How old is it? Is it still under warranty? Electrical problems are very hard to track down, it might be best to take it into the dealer.
Currently ride: Nothing right now - mostly mountain biking with my boys until they're old enough to ride
Previously rides: 2011 Honda PCX 125, 2005 V-Strom DL650, 1974 Vespa Ciao, 2011 Honda PCX 170 (tons of mods - takegawa 170cc big bore kit, gears, etc), 1996 Honda Nighthawk 250, 1987 Honda Spree, 2000 KTM 125SX, 2003 Honda Silverwing, 2007 Genuine Buddy 125, 1998 Honda PC800, 2008 Buddy 125 (white), 2008 Buddy 125 (red), 2001 Honda Reflex, 1987 Honda Elite, 1988 Honda Spree, 2007 Yamaha Vino, 2007 Honda Metro, 2x 125cc pure-chinesium dirt bikes

Previously rides: 2011 Honda PCX 125, 2005 V-Strom DL650, 1974 Vespa Ciao, 2011 Honda PCX 170 (tons of mods - takegawa 170cc big bore kit, gears, etc), 1996 Honda Nighthawk 250, 1987 Honda Spree, 2000 KTM 125SX, 2003 Honda Silverwing, 2007 Genuine Buddy 125, 1998 Honda PC800, 2008 Buddy 125 (white), 2008 Buddy 125 (red), 2001 Honda Reflex, 1987 Honda Elite, 1988 Honda Spree, 2007 Yamaha Vino, 2007 Honda Metro, 2x 125cc pure-chinesium dirt bikes
Re: Regulator/rectifier
It's early 2011, no warranty. I think maybe take it to a dealer is the answer.
Re: Regulator/rectifier
You sure? Uk pcx warranty is 2 yeqrs I believeparkmoy wrote:It's early 2011, no warranty. I think maybe take it to a dealer is the answer.

- FritzPinguin
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Re: Regulator/rectifier
Warranty on the battery in Thailand is just 6 monthsTC3 wrote:You sure? Uk pcx warranty is 2 yeqrs I believe

Bike history: Germany: Staiger 50cc 2-stroke, BMW 250 (from 1952, my age), Honda Dax ST70, Honda CB 125 (Twin), Honda CB 750, Kawa Z400j
Thailand: Kawa Zephyr 400, Honda Wave 110 S, Kawa ZX130, PCX 150 (as far as I can remember)
Thailand: Kawa Zephyr 400, Honda Wave 110 S, Kawa ZX130, PCX 150 (as far as I can remember)