Climate Control Aspirator Fan Circuit Troubleshooting

Climate Control 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 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. 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.