Improper Air Delivery Or No Mode Shift - Daewoo MATIZ Service Manual

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