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Grand VITARA 2.5L V6

  1. Warm engine up to normal operating temperature. Make sure fast idle cam and cam follower have clearance between them. Turn ignition off. Disconnect TP sensor connector. Using an ohmmeter, check resistance between specified terminals of TP sensor connector. See THROTTLE POSITION (TP) SENSOR RESISTANCE  table. See Figure. If idle switch check is not within specification, go to next step.
    NOTE: If Tech1 scan tool is available, the following adjustment can be made using scan tool instead of DVOM.
  2. Disconnect negative battery cable. Reconnect TP sensor connector. Loosen TP sensor mounting screws. Using a DVOM, check voltage at ECM terminal No. C51-3-12. See Fig 1. Turn TP sensor fully counterclockwise and then turn it clockwise slowly to locate point where DVOM voltage reading is as specified. See THROTTLE POSITION (TP) SENSOR VOLTAGE  table. Holding TP sensor at that position, tighten screws snug. Repeat step  1. If readings cannot be obtained as specified, replace TP sensor.
    Fig 1: Identifying TPS Adjustment & ECM Terminal (Grand Vitara 2.5L V6)
    G99I51076Courtesy of SUZUKI OF AMERICA CORP.
    THROTTLE POSITION (TP) SENSOR RESISTANCE(1)

    Application Ohms
    Esteem
    Between Terminals 1 & 2 2500-6000
    Between Terminals 1 & 3 (2) 100-20,000
    Vitara 1.6L & 2.0L
    Between Terminals 1 & 3 4000-6000
    Between Terminals 1 and 2 (2) 20-6000
    Grand Vitara
    Between Terminals 1 & 3 4000-6000
    Between Terminals 2 & 3 (2) 0-4600
    Swift (3)
    (1) See Figure for terminal identification.
    (2) Depending on degree of throttle opening.
    (3) Information not available.
    THROTTLE POSITION (TP) SENSOR VOLTAGE (GRAND VITARA 2.5L V6)

    Application (1) Volts
    At Idle 0.35-0.65
    At Wide Open Throttle 3.5-4.5
    (1) Ignition on and engine off.