1987 MAZDA 626 Workshop Manual

1 5 AUDIO SYSTEM
ADJUSTMENT (MTR)
Antenna adjustment
Use the following adjustment procedure to obtain op-
timum antenna and radio reception sensitivity.
1. Extend the antenna fully.
2. Set the ignition key to ACC.
3. Turn on the radio, and set it to AM reception.
4. Tune in a distant station with a weak signal at
around 1400 kHz. If such a station cannot be
found, use static to make the adjustment.
5. Turn the antenna trimmer adjustment screw to the
left and right to find the maximum sensitivity (of ei-
ther the broadcast or the static).
Note
If there is no change in the sensitivity, either
the tuned signal is too strong, or there is an
antenna malfunction or broken wire.
POWER ANTENNA
STRUCTURAL VIEW
1. Antenna motor
2. Antenna
FM M >08 ST ' I' tl -3-lx

0


[ AM s» TO too"I30"IM
J
A
FM | FM
B
I FH | fH
M FM
III
56G15X-106
15-114

AUDIO SYSTEM 1 5
Power Antenna Circuit
86U15X-194
inspection Of Power Antenna Relay
1. Check the voltage at each terminal of the relay con-
nector harness side with each condition.

Terminal Condition Voltage
LW Ignition switch ACC 12V
BY Ignition switch
ON
12V
LgW Ignition switch ACC and radio
power switch
ON
OV
LR Any time 12V

76G15X-096
86U15X-196
If not, repair the harness.
2. Turn the ignition switch on, and check the opera-
tion of the power antenna with each condition.

Condition Antenna operation
GW wire
is
connected
to a

body ground Rises
GW wire
is
not connected to
a
body ground Goes down

If the power antenna does not operate, replace the
power antenna relay or power antenna motor.
15—115

15 HEATER
HEATER
STRUCTURAL VIEW
15—116

HEATER 15
AIR FLOW AT EACH MODE
VENT mode
Type A
86U15X-198
BI-LEVEL mode
Type A
Type B
dS O CD • • CJ C3 W <& W G) • T3 A/C - EOON
| cn ES^GJJCRJ A EIZI czi tzzi |
I 11 (—HI—
86U15X-199
15-117

15 HEATER
HEAT mode
Type A
In ECO i
Type B
[E
C3 <=> C3 A.'C - ECGN
CO f—7WZZ3 CZ) CO CZ) * OFP^ i a 3
i Ml" Warm air
86U15X-200
HEAT/DEF mode
Type A
i i; ii—innnnnni
-V v-y
^ ca ° H
OP »OFF 1_2_ 3 4
h- —
[aTC]
In ECO |
Type B
CD CD C3 E3 C3 -J W <3/ ® CD E3 cS> Si CD CD A/C - ECON
[ IZZ1 IZZI CZI Ci|pzi CO CN I
i nr
Jr df^i a 3 a
(—Ki— Warm air
86U15X-201
15—118

HEATER 15
DEF mode
Type A
i ii—ii—ir-innnnnnnnn,
-H v-J/ ^J & w iHBa
4
Cfij O
• OFF 1-^3 4 LA^CJ
IQECO I
Type B
-v' W A/C - EGQK
czi czn 1=3 czi CZ] • ~|
IDi
* CFP*1 3 3 A
' IDI-Warm air
86U15X-202
RATE OF AIR FLOW
MODE AIR VENT OPEN DEF OPEN HEAT OPEN

VENT FRESH
100%
— —

BI-LEVEL
1/2
warm
50%
—
50%

HEAT WARM
20% 80%

DEFROSTER/HEAT WARM
50% 50%

DEFROSTER WARM
—
100%
—
15—119

15 HEATER
LEVER CONTROL TYPE
Type A Temperature control lever
*
REC-FRESH air selector lever
•••DODDQODaaCD °
vV ^ ® •OFF 1 7 3 4
Mode control lever
•
OFF
4 [Art]
BE CO
Fan speed control switch
86U15X-203
86U15X-204
69G15X-203
Adjustments
Air-mix door control wire
1 .Set temperature control lever at MAX-COLD po-
sition.
2. Connect and clamp the control wire with the shut-
ter lever on the heater unit all the way to the right
side.
Caution
Move the temperature control lever to be sure
the wire is attached. Also, be sure it can move
the full stroke between HOT and COLD.
Mode control wire
1. Set mode control lever to DEF position.
2. Connect and clamp the control wire with the shut-
ter lever on the heater unit at its closest point.
Caution
Move the mode lever to be sure the wire is at-
tached. Also, be sure it can move the full
stroke between DEF and VENT.
REC-FRESH air selector wire
1. Set the selector lever to REC position.
2. Connect and clamp the control wire with the shut-
ter lever on the blower unit at its closest point.
Caution
Move the rec-fresh lever to be sure the wire
is attached. Also, be sure it can move the full
stroke between REC and FRESH.
86U15X-205
15—120

HEATER 15
LOGICAL CONTROL TYPE
Type B
Mode control switch REC-FRESH air selector switch
W ^ W cOD A'C - ECOH
du tzzi
J|T OFF 13 3 4.
Temperature control lever Fan speed control lever
REC-FRESH air select motor
AIR-MIX motor
MODE control motor
Outline of Components
69G15X-207
Part Name Description
Logical control switch
One-touch, push type, mode control switch

MODE control motor
Controls
air
outlet
for
each mode
Drives VENT, HEAT and DEF doors

AIR MIX motor
Controls
air
outlet temperature
by
operating the
air
mix doors

REC-FRESH air select motor
Controls intake
air by
driving the rec-fresh
air
select door

15—121