Aspirator Fan Circuit Troubleshooting

Aspirator Fan Circuit Troubleshooting

1. Check the No. 30 (7.5 A) fuse in the driver's under-dash fuse/relay box.

Is the fuse OK?

YES -

Go to step 2.

NO -

Replace the fuse, and recheck. If the fuse blows again, check for a short in the No. 30 (7.5 A) fuse circuit.�

2. Disconnect the in-car temperature sensor 4P connector.

3. Turn the ignition switch to ON (II).

4. Measure the voltage between in-car temperature sensor 4P connector terminal No. 1 and body ground.





Is there battery voltage?

YES -

Go to step 5.

NO -

Repair an open in the wire between the No. 30 (7.5 A) fuse in the driver's under-dash fuse/relay box and the aspirator fan.�

5. Reconnect the in-car temperature sensor 4P connector.

6. Connect in-car temperature sensor 4P connector terminal No. 4 to body ground with a jumper wire.





Does the aspirator fan run?

YES -

Check for an open in the wire between the aspirator fan and body ground. If the wire is OK, check for poor ground at G501.�

NO -

Replace the aspirator fan Service and Repair.�