====== Honda NTV650 Revere - Regulator/Rectifier troubleshooting ======

The regulator/rectifier is a semiconductor device; using different testers will result in different readings. Also using a different range (scale) with the same tester will result in different readings.

The Honda workshop manual for the NTV 650 Revere gives the reading values obtained using the **Kowa 07411-0020000** digital multimeter on the RX100 scale. The values obtained with the **DT-182** and **DT9806** digital multimeters were measured by me instead. I repeated the measures using two different scales on both multimeters:

^  Digital multimeter  ^  Ranges to be used  ^^
| Kowa 07411-0020000   |  RX100  ||
| DT-182 Mini          |  200K   |  Diode  |
| DT9806               |  200kΩ  |  Diode  |

===== Regulator/rectifier inspection (with engine off) =====

The regulator/rectifier connectors are behind the right side cover.

  * Disconnect the **3P black connector** (Yellow, Yellow, Yellow)
  * Disconnect the **4P white connector** (Red/White, Red/White, Green, Green)

==== Measures on the wire harness and generator side ====

The **female connectors** are attached to the wire harness and to the generator.

^  (+) 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      | Ground       | No continuity  |


==== Measures on the the regulator/rectifier side ====

The **male connectors** are attached to the regulator/rectifier.

^  ^^  Kowa  ^  DT-182  ^^  DT9806  ^^
^  (+) Probe  ^  (-) Probe   ^  RX100  ^  200K  ^  Diode  ^  200kΩ  ^   Diode  ^
| Red/White  | Green       |  5~30 |  32.3 |  |  32.6 |    - |
| Red/White  | Yellow 1    |  1~20 |     - |  |     - |    ∞ |
| Red/White  | Yellow 2    |  1~20 |     - |  |     - |    ∞ |
| Red/White  | Yellow 3    |  1~20 |     - |  |     - |    ∞ |
| Green      | Read/White  |     ∞ |  32.2 |  |  32.5 |    - |
| Green      | Yellow 1    |     ∞ |     - |  |     - |  518 |
| Green      | Yellow 2    |     ∞ |     - |  |     - |  518 |
| Green      | Yellow 3    |     ∞ |     - |  |     - |  518 |
| Yellow 1   | Read/White  |     ∞ |     - |  |     - |  518 |
| Yellow 1   | Green       |  1~20 |     - |  |     - |    ∞ |
| Yellow 1   | Yellow 2    |     ∞ |     - |  |     ∞ |    ∞ |
| Yellow 1   | Yellow 3    |     ∞ |     - |  |     ∞ |    ∞ |
| Yellow 2   | Read/White  |     ∞ |     - |  |     - |  518 |
| Yellow 2   | Green       |  1~20 |     - |  |     - |    ∞ |
| Yellow 2   | Yellow 1    |     ∞ |     - |  |     ∞ |    ∞ |
| Yellow 2   | Yellow 3    |     ∞ |     - |  |     ∞ |    ∞ |
| Yellow 3   | Read/White  |     ∞ |     - |  |     - |  518 |
| Yellow 3   | Green       |  1~20 |     - |  |     - |    ∞ |
| Yellow 3   | Yellow 1    |     ∞ |     - |  |     ∞ |    ∞ |
| Yellow 3   | Yellow 2    |     ∞ |     - |  |     ∞ |    ∞ |


===== Web References =====

  * **[[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