INSPECTION PROCEDURE
1: Air refresher ionizer switch indicator does not turn on/off when the switch is operated. <Vehicles
with nanoe™>
COMMENTS ON TROUBLE SYMPTOM
When the air refresher ionizer switch indicator does not turn on/off by operating the
air refresher ionizer switch, the switch or the heater controller assembly (A/C-ECU) may have
a problem.
PROBABLE CAUSES
- Malfunction of air refresher ionizer switch
- Malfunction of heater controller assembly (A/C-ECU)
- Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
STEP 1. Check of open and short circuit in I/GS and IGI
lines between the heater controller assembly (A/C-ECU) connector and air refresher ionizer switch
connector
Q.
Is the check result normal?
Go to Step 2.
Repair the connector(s) or wiring harness.
STEP 2. Check of open and short circuit in power supply line between
ignition switch (IG1) or IG1 relay, and air refresher ionizer switch connector terminal No.
9 and 10
Q.
Is the check result normal?
Go to Step 3.
Repair the connector(s) or wiring harness.
STEP 3. Check the air refresher ionizer switch.
Refer to
.
Q.
Is the check result normal?
Go to Step 4.
Replace the air refresher ionizer switch (Refer to
).
STEP 4. Retest the system.
Q.
Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How
to Cope with Intermittent Malfunction).
Replace the heater controller assembly (A/C-ECU).