Warning: See warning in subsection 1.
Functionality check
1. Remove the tank and fuel pump module (see _ subsection 5 and 7).
2. Connect the ohmmeter electrodes to the two contact terminals of the measuring block (1 and 4), located in the fuel pump module connector (see illustration).
8.2. Elements of a typical fuel system: 1. Signal receipt from the measuring unit; 2. Supply 12V voltage to the pump (via relay); 3. Grounding; 4. Grounding the measuring unit
3. Place the float in the down position (corresponding to an empty tank) and take ohmmeter readings.
4. Move the float to the up position (corresponding to a full tank) and monitor the changes in the device readings.
5. If the electrical resistance does not change smoothly when the float is moved from the lower to the upper position, replace the measuring unit.
Replacement
6. Remove the fuel tank and fuel pump module (see _ subsection 5 and 7).
7. Disconnect the electrical connector of the measuring unit from the module casing (see illustration).
8.7. Disconnect the fuel pump/measuring unit electrical connector from the module
8. Remove the measuring block clamp (see illustration).
8.8. Remove the measuring block clamp
9. Squeeze the clamps and pull the fuel system measuring unit off the module (see illustration). Note the original order of laying the wire.
8.9. Squeeze the clamps and remove the fuel system measuring unit from the module
10. Installation is carried out in the reverse order of removal.