H2 Electric Parts Test
This is test method of individual electric parts. Do all test at room temperature. In the following tests using an ohmmeter, some meters will have to be connected in reverse to obtain the correct readings. "+" and "-" indicate the positive and negative meter leads, respectively. All resistance readings in ohms are approximate. If meter readings do not correspond to the valves given, the part can be considered defective.
1. Ignition Unit
Step 1. Check resistance between the Black and Light Green wires using the Rx10 range of the ohmmeter.
| Connect to + | Connect to - | R x 10 = Value |
|---|---|---|
| Black | Light Green | ∞ (no reading) |
| Light Green | Black | ∞ (no reading) |
Step 2. Check resistance between the Light Green and Red wires using the Rx100 range of the ohmmeter.
| Connect to + | Connect to - | R x 100 = Value |
|---|---|---|
| Black | Red | For either measurement the meter needle should jump and then return to infinity (no reading). |
| Red | Black |
2. Ignition Rectifier Unit
Step 1. Measure resistance between the Black-White lead and the Blue, White and Green leads, one at a time, using the Rx10 ohmmeter range.
| Connect to + | Connect to - | R x 10 = Value |
|---|---|---|
| Black - White | Blue | I20 ~ 35 Ω |
| Black - White | Green | I20 ~ 35 Ω |
| Black - White | White | 75 ~ 250 Ω |
| Blue | Black - White | ∞ (no reading) |
| Green | Black - White | ∞ (no reading) |
| White | Black - White | ∞ (no reading) |
Step 2. Measure resistance between the Black-White lead and each Light-Green wire in turn, using the Rx10 ohmmeter range.
| Connect to + | Connect to - | R x 10 = Value |
|---|---|---|
| Black - White | Light Green | ∞ (no reading) |
| Light Green | Black - White | 25 ~ 250 Ω |
3. Regulator
Step 1. Measure resistance between the Black and Red lead using the Rx10 ohmmeter range.
| Connect to + | Connect to - | R x 10 = Value |
|---|---|---|
| Black | Red | 700 ~ 1,000 Ω |
| Red | Black | 70 ~ 200 Ω |
Step 2. Measure resistance between the Black and Yellow lead using the Rx10 ohmmeter range.
| Connect to + | Connect to - | R x 10 = Value |
|---|---|---|
| Black | Yellow | 1,000 ~ 1,200 Ω |
| Yellow | Black | 25 ~ 100 Ω |
Step 3. Measure resistance between the Red lead and Yellow lead using the Rx10 ohmmeter range.
| Connect to + | Connect to - | R x 10 = Value |
|---|---|---|
| Red | Yellow | 25 ~ 90 Ω |
| Yellow | Red | One Yellow: Under 2K Ω Other Yellow: Under 6K Ω |
Step 4. Connect the battery voltage indicated - to the Black lead and + to the Red lead. Then measure resistance between the two Yellow leads.
16VDC
| Connect to + | Connect to - | 16VDC = Value |
|---|---|---|
| Yellow | Yellow | ∞ (no reading) |
| Reversed | 500 Ω | |
Less than 14VDC
| Connect to + | Connect to - | 14VDC = Value |
|---|---|---|
| Yellow | Yellow | ∞ (no reading) |
4. AC Generator
Step 1. Generator resistance readings should be taken with the generator
at normal temperatures, not when it is excessively hot from running.
*A light blue parts are not mentioned in Shop manual.
| Connect to + | Connect to - | R x 10 = Value |
|---|---|---|
| Yellow | Yellow | 0.4 Ω |
| either Yellow | Ground ⊥ | ∞ (no reading) |
| Blue | Green | 5.0 Ω |
| White | Green | 200 Ω |
| Black | each White | 200 Ω |
| Black | Stator body ⊥ | 0 Ω |
| Green | Ground ⊥ | ∞ (no reading) |
5. Signal pickup coil
Step 1. Measure resistance between the Black and White
| Connect to + | Connect to - | R x 10 = Value |
|---|---|---|
| White | Black | 200 Ω |
6. Ignition coil
Step 1. Resistance between the White lead and the core.
| Connect to + | Connect to - | R x 10 = Value |
|---|---|---|
| White | Core ⊥ | 0.64 ~ 96 Ω |