Fuel Gauge Main Sending Unit & Sub-Sending Unit
- To check fuel gauge sub-sending unit, go to next step. To check fuel gauge main sending unit, remove fuel gauge main sending unit. Apply 5 volts to terminals No. 2 and 3 of fuel gauge sending unit 3-pin harness connector. Measure voltage between terminals No. 1 and 3 while moving float to specified positions. See Fig 1. See FUEL GAUGE SENDING UNIT VOLTAGE table. If voltage is not as specified, replace fuel gauge main sending unit.
- Remove fuel gauge sub-sending unit. Apply 5 volts to terminals No. 1 and 3 of fuel gauge sending unit 3-pin harness connector. Measure voltage between terminals No. 1 and 2 while moving float to specified positions. See Fig 2. See FUEL GAUGE SENDING UNIT VOLTAGE table. If voltage is not as specified, replace fuel gauge main sending unit.
FUEL GAUGE SENDING UNIT VOLTAGE
| Float Position | Voltage (Approximate) | |
|---|---|---|
| Fuel Gauge Main Sending Unit | ||
| F | 4.60 | |
| 1/2 | 2.43 | |
| E | 0.35 | |
| Fuel Gauge Sub-Sending Unit | ||
| F | 4.60 | |
| 1/2 | 0.55 | |
| E | 0.35 | |