Mazda 1996 626 Service Manual page 257

X
2E 2C 2A 1 K 1 1
20 2M2K
2P2N2L 2J 2H 2F 2D 2B 1L 1J 1H 1F 1D 1B
E C A
F D B
Terminal voltage list
Connector Terminal Wire
(G/W) Air mix actuator
1A
1B (BR)
(P)
1C
1D (G)
Connector
1F (G/Y)
A
(10 pin)
1H (Y/B) Airflow mode actuator
1 1 (Y/G)
1J (B)
1K
—
1L
(L)
2A (W)
(G/Y) Panel light control switch
2B
2C (W/B) Airflow mode actuator
2D
(0)
2E (R)
Connector
2F (L/W)
B
(14 pin)
2H (G/L) Air intake actuator
( L )
2J
2K (Y/W) Airflow mode actuator
( Y )
2L
2M (W/L)
2N (W/Y)
(W/G)
2 0
2P (B/R) Swing louver
* It will take a while to get the normal voltage.
HEATER AND REFRIGERANT SYSTEM
Inspection
X
1C 1A
1. Remove the switch panel.
(Refer to the 1996 626/MX-6 Workshop Manual, section S.)
2. Measure the voltage at each terminal of the heater con­
trol unit connectors and fan switch connector.
3. If the measurement voltage is incorrect, check the relat­
ed components and wiring harnesses. If the related
components and wiring harness are OK, replace the
heater control unit.
Connection
GND
—
Ignition switch
Airflow mode actuator
TNS relay
A/C amplifier
_
Test condition
Any
Any
Temperature lever moved from hot to cold
(Air mix actuator operating at MAX COLD)
Temperature lever in hot position
Temperature lever in cold position
Temperature lever moved from cold to hot
(Air mix actuator operating at MAX HOT)
VENT switch on (only while airflow mode
actuator is operating from DEF to VENT)
DEF switch on (only while airflow mode
actuator is operating from VENT to DEF)
Any
—
Ignition switch at ON
DEF switch on (only while airflow mode
actuator is operating from VENT to DEF)
Light switch on and panel light control
switch at maximum illumination
Light switch on and panel light control
switch at minimum illumination
VENT switch on (only while airflow mode
actuator is operating from DEF to VENT)
Light switch on
Fan switch off
A/C switch and fan switch on
FRESH switch on*
REC switch on*
DEF switch on
HEAT/DEF switch on
HEAT switch on
VENT switch on
BI-LEVEL switch on
Ignition switch at ON
Swing switch on
G
B+; Battery positive voltage
Voltage (V)
Approx. 6
0
B+
5
Approx. 1
B+
B+
B+
0
_ _
B+
0
0
Approx. 10
B+
B+
B+
0
B+
B+
0
0
0
0
0
B+
Approx. 1
G -4 3