Corolla Wagon L4-96.8 1587cc 1.6L DOHC (4A-FE) (1996)
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Disconnect the vacuum hose from port R of the EGR vacuum modulator and connect port R directly to the intake manifold with another hose.
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Check that the vacuum gauge indicates high vacuum at 2,500 rpm.
HINT: As a large amount of exhaust gas enters, the engine will misfire slightly.
7. REMOVE VACUUM GAUGE
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Remove the vacuum gauge, and reconnect the vacuum hoses to the proper locations.
8. INSPECT EGR VALVE
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Apply vacuum directly to the EGR valve with the engine idling.
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Check that the engine runs rough or dies.
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Reconnect the vacuum hoses to the proper locations.
9. REMOVE SST FROM DATA LINK CONNECTOR 1. SST 09843-18020
IF NO PROBLEM IS FOUND WITH THIS INSPECTION, SYSTEM IS NORMAL; OTHERWISE INSPECT EACH PART
VSV INSPECTION
1. REMOVE VSV
2. INSPECT VSV
A. Inspect VSV for open circuit
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Using an ohmmeter, check that there is continuity between the terminals.
Resistance: At 20 °C (68°F): 37 - 44 ohm
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If there is no continuity, replace the VSV.