Cabin Air Filter / Purifier: Testing and Inspection

IONIZER





Description
Ionizer generates an approximately equal proportional amount of positive and negative ions in the air.




Component Function Check
1.CHECK IONIZER OPERATION SOUND
1. Turn ignition switch ON.
2. Press AUTO switch.
3. Ion indicator is shown on the display.
4. Check the ionizer operation sound (whirring sound) in the duct by putting an ear to the center ventilator grille (LH) outlet.
Is the inspection result normal?
YES - INSPECTION END
NO - Go to Diagnosis Procedure. SEE Diagnosis Procedure.




Diagnosis Procedure
1.CHECK POWER SUPPLY FOR IONIZER
1. Turn ignition switch OFF.
2. Disconnect ionizer connector.
3. Turn ignition switch ON.
4. Press fan (UP:+) switch.
5. Check voltage between ionizer harness connector and ground.





Is the inspection result normal?
YES - GO TO 2.
NO - Check 10A fuse (No. 3, located in the fuse block). Fuse Block - Junction Box (J/B).
- If fuse is OK, check harness for open circuit. Repair or replace if necessary.
- If fuse is NG, replace fuse and check for short circuit. Repair or replace if necessary.
2.CHECK CIRCUIT CONTINUITY BETWEEN IONIZER AND GROUND
1. Turn ignition switch OFF.
2. Check continuity between ionizer harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair harnesses or connectors.
3.CHECK ION ON/OFF SIGNAL
Check voltage between ionizer harness connector and ground.





Is the inspection result normal?
YES - Replace ionizer.
NO - GO TO 4.
4.CHECK CIRCUIT CONTINUITY BETWEEN UNIFIED METER AND A/C AMP. AND IONIZER
1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. connector.
3. Check continuity between unified meter and A/C amp. harness connector and ionizer harness connector.





4. Check continuity between ionizer harness connector and ground.





Is the inspection result normal?
YES - Replace unified meter and A/C amp.
NO - Repair harnesses or connectors.