FUEL PUMP UNIT INSPECTION [MZI-3.7]
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Operation Test
1. Follow “BEFORE SERVICE PRECAUTION” before performing any work operations to prevent fuel from spilling from the fuel system. (See BEFORE SERVICE PRECAUTION [MZI-3.7].)
2. Remove the fuel-filler cap. (See FUEL TANK REMOVAL/INSTALLATION [MZI-3.7].)
3. Start the fuel pump using the following procedure:
Using M-MDS
1. Connect the M-MDS to the DLC-2.
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2. Turn the ignition switch to the ON position.
3. Using the simulation function FP, verify that operation sound is heard from the fuel pump when FP is turned from OFF to ON.
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Without using M-MDS
1. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].)
2. Remove the fuel pump relay.
3. Using a jumper wire, short fuel pump relay terminals C and D in the main fuse block.
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4. Connect the negative battery cable and operate the fuel pump.
5. Verify that operation sound is heard from the fuel pump when ignition switch turn to the ON position.
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6. Disconnect the jumper wire.
4. Complete the “AFTER SERVICE PRECAUTION”. (See AFTER SERVICE PRECAUTION [MZI-3.7].)
Continuity Inspection
1. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].)
2. To remove the service hole cover, remove the following parts:
3. Disconnect the fuel pump unit connector.
4. Inspect for continuity between fuel pump unit connector terminals B and D.
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