2005 Toyota Avalon LimitedFACTORY OEM SERVICE PROCEDURE

Inspection Procedure

NOTE:
  • When a vehicle is brought into the workshop, leave it as it is. Do not change the vehicle condition. For example, do not tighten the fuel tank cap.
  • Do not disassemble the pump module.
  • The hand-held tester is required to conduct the following diagnostic troubleshooting procedure.
  1. CONFIRM DTC AND EVAP PRESSURE 
    1. Connect the hand-held tester to the DLC3.
    2. Turn the ignition switch on (IG) (do not start the engine).
    3. Turn the tester on.
    4. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
    5. Read DTCs.
    6. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / VAPOR PRESSURE.
    7. Read the EVAP (Evaporative Emission) pressure displayed on the tester.

      Result: 

      Fig 1: DTC Trouble Area
      G02976189Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. B: Go to step   4 . 
    2. C: GO TO EVAP INSPECTION PROCEDURE (SEE  EVAP INSPECTION PROCEDURE  ) 
    3. A: Go to next step. 
  2. CHECK HARNESS AND CONNECTOR(PUMP MODULE - ECM) 
    1. Turn the ignition switch off.
    2. Disconnect the A24 ECM connector.
    3. Measure the resistance between PPMP terminal of the ECM connector and the body ground.
      Fig 2: Measuring Resistance Between PPMP Terminal Of ECM Connector
      G02976190Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result: 

      Fig 3: Test Result Trouble Area
      G02976191Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Reconnect the ECM connector.
    1. B: Go to step   7 . 
    2. A: Go to next step. 
  3. CHECK HARNESS AND CONNECTOR (PUMP MODULE - ECM) 
    1. Disconnect the L12 canister connector.
    2. Disconnect the A24 ECM connector.
    3. Measure the resistance between PPMP terminal of the ECM connector and the body ground.
      Fig 4: Locating Canister Connector
      G02976192Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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