1.CHECK SECONDARY AIR PUMP FUSE.
Check if the secondary air pump fuse (60 A) is blown out.
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2.CHECK HARNESS BETWEEN FUSE BOX AND SECONDARY AIR PUMP.
1) Remove the secondary air pump fuse from the fuse box.
2) Disconnect the secondary air pump connector.
3) Measure the resistance between the secondary air pump fuse and secondary air pump connector, and chassis ground.
Connector & terminal
(F9) No. 16 — Chassis ground:
(F11) No. 2 — Chassis ground:
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Is the resistance 1 MΩ or more?
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Replace the fuse with a new part, and connect the secondary air pump connector.
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Repair ground short of the harness between the fuse box and the secondary air pump.
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3.CHECK SECONDARY AIR PUMP OPERATION.
1) Connect the delivery (test) mode connector.
2) Turn the ignition switch to ON.
3) Perform the Clear Memory Mode.
4) Perform operation check for the secondary air pump using the Subaru Select Monitor.
NOTE:
• Subaru Select Monitor
Refer to Clear Memory Mode and Compulsory Valve Operation Check Mode for detailed operation procedures.
• The compulsory operation using the Subaru Select Monitor is performed only for 5 seconds in order to protect the secondary air pump. When operating again, perform the Clear Memory Mode.
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Does the secondary air pump operate?
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4.CHECK DUCT BETWEEN SECONDARY AIR PUMP AND COMBINATION VALVE.
Check the duct between the secondary air pump and combination valve.
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Is there damage, clog or disconnection of the duct?
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Replace, clean or connect the duct.
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Replace the secondary air combination valve RH.
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5.CHECK POWER SUPPLY TO SECONDARY AIR PUMP.
1) Perform the Clear Memory Mode.
2) Turn the ignition switch to OFF.
3) Disconnect the secondary air pump connector.
4) In the condition of step 3, measure the voltage between the secondary air pump connector and the chassis ground.
NOTE:
For detailed procedure, refer to “Clear Memory Mode”.
Connector & terminal
(F11) No. 2 (+) — Chassis ground (−):
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Is the voltage 10 V or more?
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Replace the secondary air pump.
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6.CHECK HARNESS BETWEEN SECONDARY AIR PUMP RELAY AND SECONDARY AIR PUMP CONNECTOR.
1) Turn the ignition switch to OFF.
2) Remove the secondary air pump relay.
3) Measure the resistance of harness between secondary air pump relay and secondary air pump connector.
Connector & terminal
(F9) No. 11 — (F11) No. 2:
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Is the resistance less than 1 Ω?
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Repair the open circuit between the secondary air pump relay and secondary air pump connector.
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7.CHECK HARNESS BETWEEN SECONDARY AIR PUMP CONNECTOR AND CHASSIS GROUND.
Measure the resistance of the harness between secondary air pump connector and chassis ground.
Connector & terminal
(F11) No. 1 — Chassis ground:
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Is the resistance less than 5 Ω?
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Repair the open circuit of the harness between secondary air pump connector and chassis ground.
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8.CHECK SECONDARY AIR PUMP RELAY.
1) Connect the battery to terminals No. 12 and No. 13 of the secondary air pump relay.
2) Measure the resistance between secondary air pump relay terminals.
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Is the resistance less than 1 Ω?
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Replace the secondary air pump relay.
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9.CHECK SECONDARY AIR PUMP RELAY POWER SOURCE.
1) Turn the ignition switch to ON.
2) Measure the voltage between the secondary air pump relay connector and chassis ground.
Connector & terminal
(F9) No. 14 (+) — Chassis ground (−):
(F9) No. 12 (+) — Chassis ground (−):
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Is the voltage 10 V or more?
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Repair the open or ground short circuit of power supply circuit.
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10.CHECK HARNESS BETWEEN ECM AND SECONDARY AIR PUMP RELAY CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector of ECM.
3) Measure the resistance of harness between ECM and secondary air pump relay connector.
Connector & terminal
(B136) No. 8 — (B9) No. 13:
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Is the resistance less than 1 Ω?
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Repair the poor contact of the ECM connector.
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Repair the open circuit in harness between ECM and secondary air pump relay connector.
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