Leak Detection Pump: Removal

The Leak Detection Pump (LDP), LDP Filter, and EVAP canister are attached to a common support bracket. This support assembly is located to the rear of the right / rear tire under the plastic wheelhouse liner. The LDP filter is also located near the EVAP canister (Fig. 15). The LDP and LDP filter are replaced (serviced) as one unit.

Fig 1: Locating EVAP Canister/LDP

Courtesy of DAIMLERCHRYSLER CORP.

1. Remove right/rear tire/wheel.
2. Remove wheelhouse liner at right/rear wheel.
3. Remove vertical support bracket to gain access to 2 ORVR vapor lines.
4. Two vapor lines connect the fuel tank to the EVAP canister and Leak Detection Pump (LDP). This connection is made near the right/rear corner of the fuel tank. Carefully disconnect these 2 vapor lines near top of flow management valve. Be very careful not to bend or kink the vapor lines. If lines leak, a Diagnostic Trouble Code (DTC) will be set.
   Fig 2: Disconnecting ORVR Vapor Lines

   Courtesy of DAIMLERCHRYSLER CORP.
5. Remove common support bracket assembly containing LDP pump, LDP filter and EVAP canister from vehicle. While lowering this assembly, disconnect LDP electrical connector at LDP pump. Do not allow the assembly to hang from the wire harness. 
   Fig 3: Identifying Common Support Bracket Assembly

   Courtesy of DAIMLERCHRYSLER CORP.
6. Carefully separate hose at bottom of LDP filter.
7. Carefully remove vapor/vacuum lines at LDP.
8. If necessary, remove LDP filter mounting bolt and remove filter.
9. Remove EVAP canister from common support bracket by removing 4 nuts.
10. Remove 3 LDP mounting bolts and remove LDP from support bracket.
    Fig 4: Locating LDP Mounting Bolts

    Courtesy of DAIMLERCHRYSLER CORP.