Previa Van RWD L4-148.8 2438cc 2.4L DOHC SC (2TZ-FZE) (1996)
Idle Speed: Component Tests and General Diagnostics
1. INITIAL CONDITIONS.
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Engine at normal operating temperature.
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Air cleaner installed.
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All pipes and hoses of air induction System connected.
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All accessories switched OFF.
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All vacuum lines properly connected.
HINT: All vacuum hoses for EGR system, etc. should be properly connected.
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MFI system wiring connectors fully plugged.
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Ignition timing set correctly.
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Transmission in neutral position.
2. CONNECT TACHOMETER.
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Connect the tester probe of a tachometer to terminal IG- of the DLC1.
NOTE: Never allow the tachometer terminal to touch ground as it could result in damage to the igniter and/or ignition coil. As some
tachometers are not compatible with this ignition system, we recommend that you confirm the compatibility of your unit before use.
3. INSPECT IDLE SPEED.
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Race the engine speed at 2,500 rpm for approx. 90 seconds.
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Check the idle speed.
Idle speed: 750 + 50 rpm
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If the idle speed is not as specified, check the IAC valve.
4. DISCONNECT TACHOMETER.