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- Exhaust gas recirculation valve (stepper motor) check (Refer to GROUP 17 - Emission Control - Exhaust Gas Recirculation (EGR) System - Exhaust Gas Recirculation Valve (Stepper Motor) Check
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Q.
Is the check result normal?
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Replace the exhaust gas recirculation valve.
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(1)Disconnect the connector, and measure at the wiring harness side.
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(3)Check the voltage between the exhaust gas recirculation valve connector (power supply line) and body earth. OK: System voltage
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Q.
Is the check result normal?
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![](../../../buttons/03btn002.png)
Repair or replace the connector(s), or check and repair the harness of short to earth, and open circuit in power supply line between engine control relay connector and exhaust gas recirculation valve connector.
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(2)Check the voltage between the engine-ECU connector (EGRA, EGRB, EGRC and EGRD terminal) and body earth. OK: To initialise, energise exhaust gas recirculation valve for three seconds and de-energise it.
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Q.
Is the check result normal?
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![](../../../buttons/03btn002.png)
Repair or replace the connector(s), or check and repair the harness of short to earth, and open circuit in EGRA, EGRB, EGRC and EGRD line between exhaust gas recirculation valve connector and engine-ECU connector.
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Q.
Is the check result normal?
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Repair the connector(s) or wiring harness.
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Q.
Is the check result normal?
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Repair the connector(s) or wiring harness.
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- Reconfirmation of diagnosis code.
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Q.
Is diagnosis code set?
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Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
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