Mazdaspeed3 L4-2.3L Turbo (2010)
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Using a jumper wire, short fuel pump relay terminals C and D in the relay and fuse block.
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Connect the negative battery cable and operate the fuel pump.
9. Operate the fuel pump for 10 s.
10. Measure the fuel line pressure.
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If not within the specification, inspect the following:
If it less than the specification:
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Fuel pump unit
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Fuel line for clogging or leakage
If it exceeds the specification:
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Fuel line clogging
Fuel pressure
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350-430 kPa {3.57-4.38 kgf/cm2, 50.8-62.3 psi}
11. Stop the fuel pump using the following procedure.
Using M-MDS
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Using the simulation function "FP", stop the fuel pump. See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Scan Tool Testing and Procedures/On-Board Diagnostic Test
Without using M-MDS
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Disconnect the negative battery cable to stop the fuel pump.
12. Measure the fuel hold pressure after 5 min.
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If not within the specification, inspect the following:
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Fuel line leakage
Fuel hold pressure
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210 kPa {2.14 kgf/cm2, 30.5 psi} or more
13. Complete the "BEFORE SERVICE PRECAUTION". See: Powertrain Management/Fuel Delivery and Air Induction/Service Precautions/Vehicle
Damage Warnings/Before Service Precaution
14. Disconnect the SST.
15. Connect the quick release connector. See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Line Coupler/Service and Repair/Quick
Release Connector Removal/Installation
16. Complete the "AFTER SERVICE PRECAUTION". See: Powertrain Management/Fuel Delivery and Air Induction/Service Precautions/Vehicle
Damage Warnings/After Service Precaution