subaru Workshop Repair Guides

Subaru Workshop Service and Repair Manuals

Diagram Information and Instructions|Page 1321 > < Diagram Information and Instructions|Page 1319
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Diagnostic Chart

EGR CONTROL SOLENOID DIAGNOSTIC CHART

1. CHECK ECM VOLTAGE

a.

With ignition "ON," measure voltage between ECM and ground.
Connector (terminal)

Voltage

B62(14) &  ground

min 10 VDC

Should read 10-13V.

2. CHECK HARNESS CONNECTOR BETWEEN ECM AND MAIN RELAY

a.

Turn ignition "OFF".

b.

Disconnect ECM and main relay connectors.

c.

Measure resistance between ECM connector and relay connector.
Connector (terminal)

Resistance

B62(14) & B52(4)

0 ohms

3. CHECK POWER SUPPLY TO MAIN RELAY

a.

Turn ignition "ON".

b.

Disconnect main relay connector.

c.

Measure voltage between relay connector and ground.
Connector (terminal)

Voltage

B52(1) &  ground

min 10 VDC

B52(2) &  ground

min 10 VDC

4. CHECK INPUT SIGNAL FROM EGR CONTROL SOLENOID

a.

Turn ignition "ON".

b.

Disconnect main ECM connector.

c.

Measure voltage between ECM connector and ground.

Diagram Information and Instructions|Page 1321 > < Diagram Information and Instructions|Page 1319