Leak Detection Pump: Service and Repair

REMOVAL

Fig.1 Fuel Delivery Components:

Fig.3 LDP Location / Mounting:

The Leak Detection Pump (LDP) is attached (bolted) to the front of the fuel tank. The LDP fresh air filter is located on the end of a hose. This hose is attached to the fuel fill tube assembly below and near the fuel fill opening. The LDP and LDP filter are typically replaced (serviced) as one unit.
1. Raise vehicle.
2. Carefully remove two 3/4 inch vent hoses at sides of LDP.
3. Carefully remove other vapor/vacuum hoses from LDR
4. Place a hydraulic jack under fuel tank.
5. Loosen 2 fuel tank strap mounting bolts at front of tank about 10 turns.
6. Lower front of fuel tank about 1/2 inch.

Fig.4 LDP Electrical Connector:

7. Remove 2 LDP mounting nuts and lower LDP slightly to gain access to electrical connector.
8. Disconnect electrical connector at LDP. To disconnect: Slide red colored tab upward. Push on black colored tab while removing connector.
9. Remove LDP from vehicle.

INSTALLATION

The Leak Detection Pump (LDP) is attached (bolted) to the front of the fuel tank. The LDP filter is located on the end of a hose. This hose is attached to the fuel fill tube assembly below and near the fuel fill opening. The LDP and LDP filter are replaced (serviced) as one unit.
1. Install electrical connector to LDP. Push red colored tab downward to lock connector to LDP.
2. Position LDP and LDP bracket to fuel tank mounting studs and install 2 nuts. Tighten nuts to 1 Nm (11 in. lbs.) torque.
3. Raise fuel tank to body and tighten 2 strap bolts to 61 Nm (45 ft. lbs.) torque.
4. Carefully install vapor/vacuum lines to LDP, and install hose to LDP filter. The vapor/vacuum lines and hoses must be firmly connected. Check the vapor/vacuum lines at the LDP, LDP filter and EVAP canister duty cycle purge solenoid for damage or leaks. If a leak is present, a Diagnostic Trouble Code (DTC) may be set.