Toyota Supra 1990 Manual page 167

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EMISSION CONTROL SYSTEMS -

Exhaust Gas Recirculation (EGR) System (7M-GE)

No continuity

CHECK FOR SHORT CIRCUIT

Using an ohmmeter, check that there is no continuity be-

tween the terminals and the VSV body.

If there is continuity, replace the VSV.

CHECK FOR OPEN CIRCUIT

Using an ohmmeter, measure the resistance between the

Specified resistance:

at 20°C (68°F)

If the resistance is not within specification, replace the

INSPECTION OF EGR VALVE

REMOVE EGR VALVE

Check the valve for sticking and heavy carbon deposits.

If a problem is found, replace it.

INSTALL EGR VALVE WITH NEW GASKET

INSPECTION OF WATER TEMP. SENSOR

(See page FI-113)

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