Injection Volume Inspection

WARNING:

Fuel line spills and leakage from the pressurized fuel system are dangerous. Fuel can ignite and cause serious injury or death and damage. To prevent this, complete the following inspection with the engine stopped.

Follow "BEFORE SERVICE PRECAUTION" before performing any work operations to prevent fuel from spilling from the fuel system. (See BEFORE SERVICE PRECAUTION ).
Disconnect the negative battery cable.
Remove the fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION ).
Connect the fuel injector to the fuel injector tester.
Start the fuel pump using the following procedure:
Using M-MDS
1. Connect the M-MDS to the DLC-2.
2. Start the fuel pump using the "FP" simulation function.
Without using M-MDS

Fig 1: Identifying Data Link Connector 2
Courtesy of MAZDA MOTORS CORP.
1. Remove the fuel pump relay.
  CAUTION:
  - Be careful to short the specified terminal as shorting the wrong terminal of the main fuse block may cause a malfunction.
    
    Fig 2: Identifying Fuel Pump Relay And Main Fuse Block
    Courtesy of MAZDA MOTORS CORP.
2. Using a jumper wire, short fuel pump relay terminals C and D and connect the negative battery cable to start the fuel pump.
Measure the injection volume of each fuel injector.
- If not within the specification, replace the fuel injector.
Standard

California emission regulation applicable model: 260-320 ml {260-320 cc, 15.9-19.5 cu in}/min

Except for California emission regulation applicable mode: 195-245 ml {195-245 cc, 11.9-14.9 cu in}/min

Fig 3: Identifying Fuel Pump Relay Terminals
Courtesy of MAZDA MOTORS CORP.
Disconnect the negative battery cable.
Install the fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION ).
Inspect all related parts by performing "AFTER SERVICE PRECAUTION". (See AFTER SERVICE PRECAUTION ).