Without using M-MDS

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Remove the fuel pump relay.
CAUTION:
- Short the specified terminals because shorting the wrong terminal of the relay and fuse block may cause malfunctions.
Fig 1: Identifying Fuel Pump Relay
Courtesy of MAZDA MOTORS CORP.
Using a jumper wire, short fuel pump relay terminals C and D in the relay and fuse block.
Connect the negative battery cable and operate the fuel pump.

8. Operate the fuel pump for 10 s
9. Measure the fuel line pressure.
- If not within the specification, inspect the following:
If it less than the specification:
- Fuel pump unit
- Fuel line leakage
If it exceeds the specification:
- Fuel line clogging
Fig 2: Identifying Relay And Fuse Block Connector Terminals
Courtesy of MAZDA MOTORS CORP.

Fuel pressure

375-450 kPa {3.83-4.58 kgf/cm ² , 54.4-65.2 psi}
10. Stop the fuel pump using the following procedure.
Using M-MDS
1. Using the simulation function "FP", stop the fuel pump.
Without using M-MDS
1. Disconnect the negative battery cable to stop the fuel pump.
11. Measure the fuel hold pressure after 5 min
- If not within the specification, inspect the following:
- Fuel line for clogging or leakage
Fuel hold pressure

200 kPa {2.04 kgf/cm ² , 29.1 psi} or more
12. Complete the "BEFORE SERVICE PRECAUTION". See BEFORE SERVICE PRECAUTION [L5] )
13. Disconnect the SST .
14. Connect the quick release connector. See QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION [L5]. )
15. Complete the "AFTER SERVICE PRECAUTION". See AFTER SERVICE PRECAUTION [L5]. )