Mazda MX-3 silhouetteMX-3

MODE switch / AIR INTAKE WIRE / AIRFLOW MODE WIRE

G-47prose procedure
Continued from G-46

MODE switch

  1. 1
    Remove the heater control unit. (Refer to page G-43.)
  2. 2
    Press the MODE switch and check for continuity between the terminals of the heater control unit.
    Heater control unit connector terminal layout for the MODE switch check. Top row terminals S, Q, O, M; bottom row terminals T and J identified in the connector grid.
  3. 3
    If not as specified, replace the heater control unit. (Refer to page G-43.)

MODE switch terminal continuity (O—O: Continuity)

VENT
JO
TO
S
Q
O
M
B/L
JO
T
SO
Q
O
M
HEAT
JO
T
S
QO
O
M
H/D
JO
T
S
Q
OO
M
DEF
JO
T
S
Q
O
MO

AIR INTAKE WIRE

Adjustment

Air Intake Wire Adjustment

  1. 1
    Set the REC/FRESH lever to FRESH.
  2. 2
    Connect the air intake wire to the intake door link.
    Air intake wire connection to the intake door link at the blower unit. Labels: BLOWER UNIT, WIRE, INTAKE DOOR LINK, CLIP. Shows where the wire is clamped after setting the door to the FRESH position.
  3. 3
    Set the door at the FRESH position and clamp the wire into place.
  4. 4
    Verify that the REC/FRESH lever moves its full stroke.

AIRFLOW MODE WIRE

Adjustment

Airflow Mode Wire Adjustment

  1. 1
    Set the mode lever at DEFROST.
  2. 2
    Remove the airflow mode wire from clip A.
  3. 3
    Align set pin hole B of the link with the corresponding hole of the heater unit. Insert a 6 mm (0.24 in) pin to fix the link in the correct position.
    Airflow mode wire adjustment detail. Shows the heater unit, wire link, set pin hole B and a 6 mm (0.24 in) set pin inserted to fix the link in the heater case (AREA B). Insets illustrate removing the wire from clip A by pulling (WIRE - PULL - CLIP A) and the link/set-pin alignment.
  4. 4
    Verify that the mode lever is in the defrost position.
    Do not push the inner wire of the airflow mode wire when setting. If pushed, the wire may be deformed, preventing the correct setting.
  5. 5
    Set the airflow mode wire against clip A as shown. Pull the airflow mode wire slightly in direction a. Press areas b and c simultaneously when setting the wire into the clip.
    Airflow mode wire setting into clip A. Inset shows PUSH points b and c, direction a for pulling the wire, the inner wire, link, and clip A. Lower illustration shows the heater unit and wire link assembly.
  6. 6
    Remove the set pin.
  7. 7
    Verify that the mode lever functions correctly. If not, pull the airflow mode wire 2 mm (0.08 in) in direction a.
  8. 8
    Verify that the mode lever functions correctly.
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See also

page G-43

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