Owner's Manual

TROUBLE DIAGNOSIS
MTC-41
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MTC
Revision: March 2005 2005 Altima
Recirculation indicator should illuminate.
2. Press REC switch a second time.
Recirculation indicator should turn off.
3. Listen for intake door position change (you should hear blower sound change slightly).
If NG, go to MTC-51, "
Intake Door Motor Circuit" .
If OK, continue with next check.
4. Check Temperature Decrease
1. Turn the temperature dial fully counterclockwise.
2. Check for cold air at discharge air outlets.
If NG, go to MTC-64, "
Insufficient Cooling" .
If OK, continue with next check.
5. Check Temperature Increase
1. Turn the temperature dial fully clockwise.
2. Check for hot air at discharge air outlets.
If NG, go to MTC-71, "
Insufficient Heating" .
If OK, continue with next check.
6. Check Air Conditioner Switch
1. Turn fan dial to the desired position and push the air conditioner
switch (if equipped) to turn ON the air conditioner.
2. Confirm that the A/C indicator lamp illuminates and that the
compressor clutch engages (audio or visual inspection).
If NG, go to MTC-42, "
Power Supply and Ground Circuit for Front Air
Control" , then if necessary, MTC-59, "Magnet Clutch Circuit" .
If all operational checks are OK (symptom can not be duplicated), go
to GI-26, "
How to Perform Efficient Diagnosis for an Electrical Inci-
dent" and perform tests as outlined to simulate driving condition
environment. If symptom appears, refer to MTC-28, "
SYMPTOM
TABLE" and perform applicable trouble diagnosis procedures.
WJIA0913E
WJIA0914E
WJIA0915E