SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSLEXUS2005ES 330REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISSFI SYSTEM - DIAGNOSTICSACTIVE CONTROL ENGINE MOUNTINSPECTION PROCEDURE
2005 Lexus ES 330

Inspection Procedure

2005 Lexus ES 330SECTION Inspection Procedure
  1. CHECK VACUUM HOSES 
    1. Check whether the cap of vacuum hose is missing or not.
    2. If the hose is damaged, replace the vacuum hose assembly.
    3. Check the air and vacuum hoses for looseness, disconnection and blockage.
      Fig 1: Checking Vacuum Hoses
      G02937839Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE VACUUM HOSES 

    OK: GO TO NEXT STEP 

  2. CHECK VACUUM 
    1. Start the engine.
    2. Disconnect the vacuum hose from the vacuum tank.
    3. Check that an unconnected port located on the vacuum tank applies suction to your finger.
    4. Reconnect the vacuum hose.

    NG: CHECK AND REPLACE VACUUM SOURCE AND HOSES 

    Fig 2: Disconnecting Vacuum Hoses From Vacuum Tank
    G02937840Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO TO NEXT STEP 

  3. INSPECT ECM 
    1. Connect the oscilloscope between terminals ACM and E1 of the E8 ECM connector.
    2. Warm up the engine to normal operating temperature.
    3. Turn the A/C switch ON.
    4. Measure the voltage between terminals ACM and E1 of the E8 ECM connector.

    Result: 

    VOLTAGE SPECIFIED CONDITION

    Condition Voltage
    Shift position is D range, and engine speed is 850 rpm or less Pulse generation
    Shift position is D range, and engine speed is 950 rpm or more 9 to 14V
    Shift position is P range 9 to 14V
    Fig 3: Inspecting ECM Connector
    G02937841Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.