HEATING AND VENTILATION SYSTEM 7A–11
DAEWOO M-150 BL2
IMPROPER AIR DELIVERY OR NO MODE SHIFT
This procedure provides a test of all functions of the heater/defroster unit.
1. Warm up the vehicle.
2. Keep the engine running.
3. Perform the tests outlined in the table below and look for the results indicated.
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CONTROL SETTINGS
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CORRECT RESULTS
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MODE
KNOB
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TEMP.
CONTROL
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BLOWER
MOTOR
SWITCH
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ÁÁÁ
BLOWER
SPEED
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ÁÁÁ
POWER
VENT
OUTLET
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ÁÁÁ
FLOOR
OUTLET
ÁÁÁÁ
ÁÁÁÁ
DEFROST
OUTLET
ÁÁÁ
ÁÁÁ
SIDE
WINDOW
OUTLET
Vent
Cold
Off
Off
No
Airflow
No
Airflow
No
Airflow
No
Airflow
ÁÁÁÁ
Vent
ÁÁÁ
Cold
ÁÁÁ
4
ÁÁÁ
High
ÁÁÁ
Ambient
Airflow
ÁÁÁ
No
Airflow
ÁÁÁÁ
No
Airflow
ÁÁÁ
No
Airflow
ÁÁÁÁ
Floor
ÁÁÁ
Cold to Hot
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4
ÁÁÁ
High
ÁÁÁ
No
Airflow
ÁÁÁ
Cold to Hot
Airflow
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Minimum
Cold to Hot
Airflow
ÁÁÁ
Minimum
Cold to Hot
Airflow
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Defroster
ÁÁÁ
ÁÁÁ
Cold to Hot
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ÁÁÁ
4
ÁÁÁ
ÁÁÁ
High
ÁÁÁ
ÁÁÁ
No
Airflow
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ÁÁÁ
Minimum
Cold to Hot
Airflow
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ÁÁÁÁ
Cold to Hot
Airflow
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ÁÁÁ
Minimum
Cold to Hot
Airflow
If any of these settings does not produce the correct results, perform the following diagnostic procedure.
Step
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Action
Value(s)
Yes
No
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1
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Verify the customer’s complaint.
Are the customer’s concerns verified?
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–
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Go to Step 2
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System OK
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2
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ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
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Examine the affected door in the unit for proper
cable attachment.
D Check the cable connection to the door.
D Check that the cable sheath is properly re-
tained.
Is the cable connected properly?
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–
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Go to Step 4
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Go to Step 3
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3
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Repair as necessary.
Is the repair complete?
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–
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System OK
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–
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4
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ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
1. Disconnect the cable at the door.
2. Check the range of the door travel and the effort
required to move it.
Does the door move freely through its entire range
of travel so that it can close at both ends of the
range?
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–
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Go to Step 5
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Go to Step 3
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5
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Check the travel of the Bowden cable by turning the
control knob.
Is the cable travel OK?
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–
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Go to Step 6
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Go to Step 7
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6
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1. Reinstall the cable.
2. Recheck the system using the “Control
Settings/Correct Results” tests in this procedure.
Does the system perform properly?
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–
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System OK
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Go to Step 9
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7
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1. Check the cable attachment at the control.
2. Check for a broken control.
Is there a problem with the cable attachment or the
control?
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–
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Go to Step 8
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Go to Step 9