Rectifier- Regulator failure

[InSaneFisherMan]

Noticed that my charge voltage was lower than normal. Checked service manual and the regulated voltage should be 13.5-14.4vdc @ 3000 rpm.

Checked charge coil, relays, fuses, ECM, wiring, and regulator.

All were good except, regulator inputs from charge coil. Open, when they should have been .85 - 8.5 ohms.

Will post a follow-up update, when regulator comes in and installed.

 

[wmk0002]

Just out curiosity, are you using a traditional or lithium cranking battery?

 

[InSaneFisherMan]

Just out curiosity, are you using a traditional or lithium cranking battery?

Lead acid battery.

Just replaced 7 year old battery, not sure if the bad battery caused it or a result of the failure.

 

[MrGiggles]

If the stator is open, then you should be replacing that, not the regulator.

Resistance testing these electronic components is pretty much one step above useless, really all you need to check is the AC voltage coming out of the stator with the engine running, and if the connection between the regulator and the battery is sound.

 

[InSaneFisherMan]

If the stator is open, then you should be replacing that, not the regulator.

Resistance testing these electronic components is pretty much one step above useless, really all you need to check is the AC voltage coming out of the stator with the engine running, and if the connection between the regulator and the battery is sound.

Charge coils are good per service manual ohms check.

Regulator inputs from charge coils are open per service manual ohms check.

Couldn't run engine in the garage and don't want to risk any damage to charge coils, so, didn't do AC voltage checks.

Don't think Suzuki would put it in the service manual if it was useless.