Differences

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--- tecnica:motori:honda_ntv650_regulator_troubleshooting [2025/08/02 23:19] – [Honda NTV650 Revere - Regulator/Rectifier troubleshooting] niccolo
+++ tecnica:motori:honda_ntv650_regulator_troubleshooting [2025/08/03 23:34] (current) – [Web References] niccolo
@@ Line 31: / Line 31: @@
 The regulator/rectifier connectors are behind the right side cover.
-  * Disconnect the **3P black connector** (Yellow, Yellow, Yellow: The three-phase **alternator coils**)
+  * Disconnect the **3P black connector** (Yellow, Yellow, Yellow: The three-phase **generator coils**)
   * Disconnect the **4P white connector** (Red/White, Red/White, Green, Green: to battery, **positive** and **negative**)
-==== Measures on the wire harness and alternator side ====
+==== Measures on the wire harness and generator side ====
 The **female connectors** are attached to the wire harness and to the generator.
@@ Line 40: / Line 40: @@
 ^  (+) Probe  ^  (-) Probe   ^ Reading  ^
 | Red/White   | Green        | Battery voltage: fully charged 13.0~13.2, undercharged if < 12.3.  |
-| Yellow      | Yellow       | Alternator coils: 0.1~1.0 Ω at 20 °C  |
+| Yellow      | Yellow       | Generator coils: 0.1~1.0 Ω at 20 °C  |
 | Yellow      | Ground       | No continuity  |
-Using the **DT-182** Mini multimeter on the **200 Ω** scale, the reading with the terminals shorted is **0.4 Ω**, measuring each coil the reading is **0.8 Ω** instead.
+Using the **DT-182** Mini multimeter on the **200 Ω** scale, the reading with the terminals shorted is **0.4 Ω**, measuring each coil (yellow-yellow) the reading is **0.8 Ω** instead.
@@ Line 52: / Line 52: @@
 ^  ^^  Kowa  ^  DT-182  ^^^  DT9806  ^^^
 ^  (+) Probe  ^  (-) Probe   ^  RX100  ^  200K  ^  2000K  ^  Diode  ^  200kΩ  ^  2MΩ  ^   Diode  ^
-| Red/White  | Green       |  5~30 |  32.3* |     - |    ∞ |  32.6* |     - |    - |
+| Red/White  | Green       |  5~30 |  32.3* |     - |    ∞ |  32.6* |     - |    ∞ |
 | Red/White  | Yellow 1    |  1~20 |      - |  1770 |    ∞ |      - |  .770 |    ∞ |
 | Red/White  | Yellow 2    |  1~20 |      - |  1770 |    ∞ |      - |  .770 |    ∞ |
@@ Line 77: / Line 77: @@
 Values measured on the diode scale may vary by **+/- 2%**, values measured on the MΩ scale may vary by **+/- 5%**.
-The following picture represents the schematic of a generic regulator/rectifier for a three-phase alternator (credits to [[https://www.homemade-circuits.com/3-phase-motorcycle-voltage-regulator/|www.homemade-circuits.com]]), **it is not the schematic of the Honda part**, use it just to understand how the rectifier diodes are tested:
+The following picture represents the schematic of a generic regulator/rectifier for a three-phase generator (credits to [[https://www.homemade-circuits.com/3-phase-motorcycle-voltage-regulator/|www.homemade-circuits.com]]), **it is not the schematic of the Honda part**, use it just to understand how the rectifier diodes are tested:
 {{.:honda_ntv650:multimeters:motorcycle-regulator-rectifier.png?direct&480|Motorcycle regulator/rectifier schematic}}
@@ Line 94: / Line 94: @@
 Remove the **main fuse** and connect a multimeter in series to close the circuit. The multimeter must be on the ampere scale. Starting the engine and gradually increasing the speed to **3000 rpm**, should read a current of **0.5 A** at 20 °C. This is the standard charging current for an AGM battery.
-==== Alternator voltage ====
+==== Generator voltage ====
-You can measure the **A.C.** voltage generated by each of the three alternator coils with a multimeter at the **black 3P connector**, measuring each of the three yellow wires two by two. Each coil should produce about **6 V (A.C.)** at **3000 rpm**.
+You can measure the **A.C.** voltage generated by each of the three generator coils with a multimeter at the **black 3P connector**, measuring each of the three **yellow wires two by two**.
+  * **Disconnect** both the **black 3P** and the white **4P connectors** of the rectifier.
+  * The **battery must be charged enough** to allow the engine to run for a minute or two, without the generator providing power.
+  *  **Start the engine** and connect the multimeter to the **3P black female** connector (three yellow wires), pairing the wires two by two; i.e. testing 1-2, 1-3 and 2-3.
+  * Each coil should produce about **26 V (A.C.)** at **3000 rpm**.
@@ Line 102: / Line 107: @@
   * **[[https://www.ittsb.eu/forum/index.php?topic=1851.0|What is KOWA KS-AHM-32-003 Digital multimeter by HONDA recommended CDI tester?]]**
-  * **[[https://youtube.com/watch?v=mn6RtpdmeQE&feature=shared|How To Test A Regulator Rectifier (Motorcycle)]]** - Video
+  * **[[https://electronicshacks.com/how-to-test-a-stator-with-a-multimeter/|How to Test a Stator With a Multimeter?]]**
+  * **[[https://www.motorcycleforum.com/threads/testing-a-3-phase-alternator-stator-r-r-and-battery.245315/|Testing a 3 Phase Alternator-Stator-R/R And battery]]**
+  * Video: **[[https://youtube.com/watch?v=mn6RtpdmeQE|How To Test A Regulator Rectifier (Motorcycle)]]**
+  * Video: **[[https://youtube.com/watch?v=-5gBeW9mQoY|How to Test the Stator on a Motorcycle, ATV, or UTV]]**
+  * Video: **[[https://youtube.com/watch?v=H5ZU_c2a1pA|How to Test the Charging System on a Honda CBR 600 RR]]**