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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 | |
|---|---|---|
| Kowa 07411-0020000 | RX100 | |
| DT-182 Mini | 2000K | 200K |
| DT9806 | 2MΩ | 200kΩ |
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 | 2000K | 200K | 2MΩ | 200kΩ |
| Red/White | Green | 5~30 | 0.032 | 32.3 | 0.032 | 32.6 |
| Red/White | Yellow 1 | 1~20 | 1520~1840 | ∞ | 710~790 | 195 |
| Red/White | Yellow 2 | 1~20 | 1520~1840 | ∞ | 710~790 | 195 |
| Red/White | Yellow 3 | 1~20 | 1520~1840 | ∞ | 710~790 | 195 |
| Green | Read/White | ∞ | 0.031 | 32.2 | 0.032 | 32.5 |
| Green | Yellow 1 | ∞ | 1780~∞ | ∞ | 0.66~0.73 | 132 |
| Green | Yellow 2 | ∞ | 1780~∞ | ∞ | 0.66~0.73 | 132 |
| Green | Yellow 3 | ∞ | 1780~∞ | ∞ | 0.66~0.73 | 132 |
| Yellow 1 | Read/White | ∞ | 1710~∞ | ∞ | 0.65~0.72 | 129 |
| Yellow 1 | Green | 1~20 | ∞ | ∞ | 0.70~0.77 | 192 |
| Yellow 1 | Yellow 2 | ∞ | ∞ | ∞ | ∞ | ∞ |
| Yellow 1 | Yellow 3 | ∞ | ∞ | ∞ | ∞ | ∞ |
| Yellow 2 | Read/White | ∞ | 1710~∞ | ∞ | 0.65~0.72 | 129 |
| Yellow 2 | Green | 1~20 | ∞ | ∞ | 0.70~0.77 | 192 |
| Yellow 2 | Yellow 1 | ∞ | ∞ | ∞ | ∞ | ∞ |
| Yellow 2 | Yellow 3 | ∞ | ∞ | ∞ | ∞ | ∞ |
| Yellow 3 | Read/White | ∞ | 1710~∞ | ∞ | 0.65~0.72 | 129 |
| Yellow 3 | Green | 1~20 | ∞ | ∞ | 0.70~0.77 | 192 |
| Yellow 3 | Yellow 1 | ∞ | ∞ | ∞ | ∞ | ∞ |
| Yellow 3 | Yellow 2 | ∞ | ∞ | ∞ | ∞ | ∞ |