Test B: Fuel Gauge Always Reads Empty
- Test fuel gauge, see FUEL GAUGE under COMPONENT TESTING
. If fuel gauge tests okay, go to next step. If fuel gauge is faulty, replace fuel gauge and indicator module. Retest system.
- Test fuel sending unit, see FUEL SENDING UNIT
under COMPONENT TESTING. If fuel sending unit tests okay, go to next step. If fuel sending unit is faulty, replace fuel sending unit. Retest system.
- Turn ignition off. Disconnect instrument cluster connector C270. See Figure
- Figure
. Disconnect fuel sending unit connector. Measure resistance between ground and instrument cluster connector C270 terminal No. 3 (Blue/Red wire). If resistance is more than 10 k/ohms, go to next step. If resistance is less than 10 k/ohms, repair short to ground in Blue/Red wire. Retest system.
- Reconnect instrument cluster connector C270. Remove fuel indicator module from back of instrument cluster. Turn ignition on. Measure voltage between ground and fuel indicator module connector terminal No. 2. See Figure
- Figure
. If voltage is 10 volts or less, go to TEST A: step 4). If voltage is more than 10 volts, go to next step.
- Turn ignition off. Measure resistance between ground and fuel indicator module connector terminal No. 3. If resistance is more than 5 ohms, go to TEST A: step 5). If resistance is less than 5 ohms, go to next step.
- Disconnect instrument cluster connectors C270 and C268. Measure resistance between instrument cluster and fuel gauge or indicator module as indicated. See PRINTED CIRCUIT TEST POINTS
table. If resistance in all measurements are 5 ohms or less, replace fuel pump indicator module. Retest system. If resistance of any measurement is more than 5 ohms, replace instrument cluster printed circuit and retest. See PRINTED CIRCUIT
under REMOVAL & INSTALLATION.
PRINTED CIRCUIT TEST POINTS
| Cluster Connector/Terminal No. |
Gauge Pin Or Indicator Module Terminal No. |
| C270/6 |
"G" |
| C270/6 |
3 |
| C270/3 |
5 |
| C270/9 |
"B" |
| C270/9 |
2 |
|
"S" |