Mazda Mazda6 Workshop Manual Supplement page 881

Terminal Signal
1K Ambient
temperature
sensor input
1L MZR-CD (RF
Turbo) select
1M Cabin
temperature
sensor input
1N —
1O Water
temperature
sensor input
1P A/C
U–18
CONTROL SYSTEM
Connected to
Ambient Depends on temperature
temperature sensor surrounding sensor
Ground Under any condition
Cabin temperature Depends on temperature
sensor surrounding sensor
—
Water temperature Depends on temperature
sensor surrounding sensor
Refrigerant Fan switch at OFF
pressure switch
Fan switch at 1st
position, A/C switch ON
Test condition Voltage (V)
See Figure
Below 1.0
See Figure
—
See Figure
Below 1.0
Action
• Inspect for continuity
(Climate control unit—
ambient temperature
sensor: 1K—B, 1I—A)
• Inspect for short circuit
(Climate control unit—
2 ambient temperature
sensor: 1K—B)
• Inspect ambient
temperature sensor
• Inspect terminal voltage of
climate control unit (2H, 2L)
• Inspect for continuity
(Climate control unit—
ground: 1L—GND)
• Inspect center panel
• Inspect for continuity
(Climate control unit— cabin
temperature sensor: 1M—B,
1I—A)
• Inspect for short circuit
(Climate control unit— cabin
3
temperature sensor: 1M—B)
• Inspect cabin temperature
sensor
• Inspect terminal voltage of
climate control unit (2H, 2L)
— —
• Inspect for continuity
(Climate control unit—water
temperature sensor: 1O—A,
1I—B)
• Inspect for short circuit
(Climate control unit—water
4
temperature sensor: 1O—A)
• Inspect water temperature
sensor
• Inspect terminal voltage of
climate control unit (2H, 2L)
• Inspect for continuity or
short circuit (Climate control
unit—refrigerant pressure
switch: 1P—A) (Refrigerant
pressure switch—PCM: B—
1AC (except MZR-CD (RF
Turbo)), 84 (MZR-CD (RF
Turbo)))
• Inspect refrigerant pressure
12
switch
• Inspect PCM terminal
voltage (1AC (except MZR-
CD (RF Turbo)), 84 (MZR-
CD (RF Turbo)))
(See F1–33 PCM
INSPECTION (4WD)
(See F2–65 PCM
INSPECTION
• Inspect terminal voltage of
climate control unit (2H, 2L)
)
)