Sakai SV400D-2, Shop Manual

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9-031
ELECTRICAL SYSTEM TROUBLESHOOTING
2-5-3. Hour meter is abnormal
The other lamps light correctly.
Reference Fig. : 2-5
Check point Check/Cause Action
1. Hour Meter - When turning starter switch ON, measure voltage between
hour meter plus (+) terminal YG wire and chassis ground.
Standard voltage: 12 V or more
- If above measurement is normal, the hour meter is faulty.
Replace the
combination meter.
2. Harness Connecting
Between Terminals
- Check harness between terminals for continuity.
- No continuity indicates that harness is open or poorly
connected.
Repair or replace the
harness.
2-5-4. Temperature gauge is abnormal
The other lamps light correctly.
Reference Fig. : 2-5
Check point Check/Cause Action
1. Thermo-unit - Disconnect harness and measure resistance of thermo-unit.
Standard resistance:
158 Ω (when unit temperature is 50°C, 122°F)
29 Ω (when unit temperature is 103°C, 217°F)
- If measured resistance is abnormal, the thermo-unit is faulty.
Replace the thermo-
unit.
2. Temperature Gauge - When turning starter switch ON, measure voltage between
temperature gauge plus (+) terminal WR wire and chassis
ground.
Standard voltage: 12 V or more
- If the above is OK, and there is no problem with the thermo-
unit, then the thermometer is faulty.
Replace the
combination meter.
3. Harness Connecting
Between Terminals
- Check harness between terminals for continuity.
- No continuity indicates that harness is open or poorly
connected.
Repair or replace the
harness.
2-5-5. Fuel gauge is abnormal
The other lamps light correctly.
Reference Fig. : 2-5
Check point Check/Cause Action
1. Fuel-unit - Disconnect harness and measure resistance of fuel-unit.
18 Ω (when float is at FULL position)
83 Ω (when float is at EMPTY position)
- If measured resistance is abnormal, the fuel-unit is faulty.
Replace the fuel-
unit.
2. Fuel Gauge - When turning starter switch ON, measure voltage between fuel
gauge plus (+) terminal WR wire and chassis ground.
Standard voltage: 12 V or more
- If the above is OK, and there is no problem with the fuel unit,
then the fuel gauge is faulty.
Replace the
combination meter.
3. Harness Connecting
Between Terminals
- Check harness between terminals for continuity.
- No continuity indicates that harness is open or poorly
connected.
Repair or replace the
harness.
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