Mazda 3 Service Manual: After Service Precaution [Mzr 2.0, Mzr 2.5]

WARNING:

• Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. When installing the fuel hose, perform “Fuel Leakage Inspection” described below.

• A person charged with static electricity could cause a fire or explosion, resulting in death or serious injury. Before performing work on the fuel system, discharge static electricity by touching the vehicle body.

Fuel Leakage Inspection

Using M-MDS

1. Connect the M-MDS to the DLC-2.

2. Switch the ignition to ON.

3. Using the simulation function “FP”, start the fuel pump..

4. Verify that there is no fuel leakage from the pressurized parts.

Standard

• There shall be no leakage after 5 min.

5. In the case of fuel leakage, replace the following components and then do the recheck by the fuel leakage checking procedure.

• If there is leakage, replace the fuel hoses and clips.

• If there is damage on the seal on the fuel pipe side, replace the fuel pipe.

Without using M-MDS

1. Remove the battery cover..

2. Disconnect the negative battery cable..

3. Remove the fuel pump relay.

CAUTION:

• Short the specified terminals because shorting the wrong terminal of the relay and fuse block may cause malfunctions.

4. Using a jumper wire, short fuel pump relay terminals C and D in the relay and fuse block.

5. Connect the negative battery cable and operate the fuel pump..

6. Verify that there is no fuel leakage from the pressurized parts.

Standard

• There shall be no leakage after 5 min.

7. In the case of fuel leakage, replace the following components and then do the recheck by the fuel leakage checking procedure.

• If there is leakage, replace the fuel hoses and clips.

• If there is damage on the seal on the fuel pipe side, replace the fuel pipe.