P1415

DTC P1415: Air Pump Electrical Current Sensor Circuit Low Voltage

NOTE: Before you troubleshoot, record all freeze data and review the general troubleshooting information.

1. Reset the ECM.
2. Turn the ignition switch ON (II).
3. Check for a DTC with a scan tool or the HDS.

Is DTC P1415 indicated?

YES - Go to step 4.

NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the air pump electrical current sensor and the ECM.

4. Turn the ignition switch OFF.
5. Disconnect the air pump electrical current sensor 3P connector.
6. Turn the ignition switch ON (II).




7. Measure voltage between air pump electrical current sensor 3P connector terminals No. 1 and No. 2.

Is there about 5 V?

YES - Go to step 8.

NO - Go to step 17.

8. Turn the ignition switch OFF.
9. Disconnect ECM connector C (31P).




10. Check for continuity between air pump electrical current sensor 3P connector terminal No. 3 and body ground.

Is there continuity?

YES - Repair short in the wire between the air pump electrical current sensor and the ECM (C24).

NO - Go to step 11.




11. Connect air pump electrical current sensor 3P connector terminals No, 2 and No. 3 with a jumper wire.




12. Check for continuity between ECM connector terminals C24 and C18.

Is there continuity?

YES - Go to step 13.

NO - Repair open in the wire between the ECM (C24) and the air pump electrical current sensor.

13. Disconnect the jumper wire from the air pump electrical current sensor 3P connector.
14. Reconnect ECM connector C (31P) and the air pump electrical current sensor 3P connector.
15. Turn the ignition switch ON (II).




16. Measure voltage between body ground and ECM connector terminal C24.

Is there about 0.5 V?

YES - Substitute a known-good ECM and recheck. If the symptom/indication goes away, replace the original ECM.

NO - Replace the air pump electrical current sensor.




17. Measure voltage between ECM connector terminals C18 and C28.

Is there about 5 V?

YES - Repair open in the wire between the ECM (C28) and the air pump electrical current sensor.

NO - Substitute a known-good ECM and recheck. If voltage is normal, replace the original ECM.