2002 MAZDA 6 warning light

T–6
MULTIPLEX COMMUNICATION SYSTEM
ON-BOARD DIAGNOSTIC FUNCTIONA6E811155430205Outline
•The on-board diagnostic function is incorporated into the PCM, TCM, ABS (ABS/TCS) HU/CM (with ABS (ABS/
TCS)), DSC HU/CM (with DSC), 4WD control module, and instrument cluster. This function can narrow down
CAN system malfunction locations.
•Due to the adoption of the TCM and the 4WD CM, some DTCs and PID/data monitor items have been added.
Other functions are the same as those of the current Mazda6 (GG) model.
Block Diagram
.
Fail-Safe Function
•When the failure detection function detemines that there is a malfunction, the fail-safe function illuminates a
warning light to advise the driver of the malfunction.
1
3
24
5
6
A6E81111103
1PCM
2 TCM (JA5AX-EL)
3 ABS (ABS/TCS) HU/CM or DSC HU/CM4 4WD control module (4WD)
5 Instrument cluster
6Twist pair
Module Fail-safe function
PCM•MIL illuminated
TCM•AT warning light illuminated
•ABS (ABS/TCS) HU/CM (with ABS (ABS/TCS))
•DSC HU/CM (with DSC)•ABS (ABS/TCS) suspended (with ABS (ABS/TCS))
•DSC suspended (with DSC)
•ABS warning light illuminated
•DSC/TCS indicator light illuminated
•DSC OFF light illuminated
•TCS OFF light illuminated
4WD control module•4WD indicator light illuminated
Instrument cluster•Speedometer, tachometer, water temperature gauge: 0 displayed

T–10
WARNING AND INDICATOR SYSTEM
OUTLINEA6E811801069201•In accordance with the 4WD setting, the following indicator light has been added:
—4WD indicator light
•In accordance with the MZR-CD (RF Turbo) setting, the following indicator lights have been added:
—Glow indicator light
—Sedimentor warning light
•A fuel gauge sender sub-unit has been adopted. (4WD)
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STRUCTURAL VIEWA6E811801069202
.
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WARNING AND INDICATOR SYSTEM
3
2
1
4
5
4WD
A6E81181101
1 Sedimentor warning light
2 4WD indicator light
3 Glow indicator light4 Fuel gauge sender unit
5 Fuel gauge sender sub-unit

WARNING AND INDEICATOR SYSTEM, THEFT-DETERRENT SYSTEM
T–11
T
SYSTEM WIRING DIAGRAMA6E811801069203
.
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OUTLINEA6E812050000201•An intruder sensor has been adopted on the rear part of the roof. (WGN)
•The construction and operation of the theft-deterrent system is the same as that of the current Mazda6 (GG)
model.
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INTRUDER SENSORA6E812050000202Outline
•WGN models are equipped with intruder sensors in two places in the vehicle, due to the necessity of movement
detection in the all around wider vehicle interior. The intruder sensors are located in the roof at the front (with
sliding sunroof), or the center (without sliding sunroof), and the cargo space.
•The structure and operation of the rear intruder sensor is the same as that of the current front and center
intruder sensors.
IG1
B+
1
345
2
6
97
8
2H 2V
1C 2F 2D 2M 2X 2W
A6E81181004
1 Instrument cluster
2Microcomputer
3 Glow indicator light
4 Sedimentor warning light
5 4WD indicator light6 PCM, ABS (ABS/TCS) HU/CM or DSC HU/CM
7 Fuel gauge sender sub-unit (4WD)
8 Fuel gauge sender unit
9 Sedimentor switch
THEFT-DETERRENT SYSTEM

AIR BAG SYSTEM
T–35
T
CURTAIN AIR BAG MODULE REMOVAL/INSTALLATIONA6E813000171201
Warning
•Handling the air bag module improperly can accidentally deploy the air bag module, which may
seriously injure you. Read AIR BAG SYSTEM SERVICE WARNINGS before handling the air bag
module. (See T–32 SERVICE WARNINGS.)
1. Turn the ignition switch to LOCK position.
2. Disconnect the negative battery cable and wait for more than 1 minute.
3. Remove the headliner.
4. Remove in the order indicated in the table.
5. Install in the reverse order of removal.
6. Turn the ignition switch to ON position.
7. Verify that the air bag system warning light
illuminates for approximately 6 seconds and
then goes off.
•If the air bag system warning light does not
operate in the manner described above, there
are malfunctions in the system. Inspect the system using the on-board diagnostic.
Connector Removal Note
1. Using a flathead screwdriver, pry out the
connector's stopper plate.
2. Disconnect the connector.
End Of SieAIR BAG MODULE AND PRE-TENSIONER SEAT BELT DEPLOYMENT PROCEDURESA6E813057000201
Warning
•A live (undeployed) air bag module and pre-tensioner seat belt may accidentally deploy when it is
disposed of and cause serious injury. Do not dispose of a live (undeployed) air bag module and
pre-tensioner seat belt. If the SSTs (Deployment tool and Adapter harness) are not available,
consult the nearest Mazda representative for assistance.
Caution
•Deploying the air bag modules and pre-tensioner seat belts inside the vehicle may cause damage
to the vehicle interior. When the vehicle is not to be scrapped, always deploy the air bag modules
and pre-tensioner seat belts outside the vehicle.
•When the vehicle is to be scrapped, deploy the air bag modules and pre-tensioner seat belts inside the vehicle.
(See T–36 Deployment Procedure for Inside of Vehicle (Only When Vehicle Is To Be Scrapped).)
•When the vehicle is not to be scrapped, deploy the air bag modules and pre-tensioner seat belts outside the
vehicle. (See T–36 Deployment Procedure for Outside of Vehicle.)
Note
•When disposing of deployed air bag module and pre-tensioner seat belt, refer to the disposal procedure.
•The deployment procedures are the same as those of the current 4SD and 5HB models, except for the
curtain air bag module.
1 Connector
(See T–35 Connector Removal Note)
2Bolt
3 Curtain air bag module3
1
2
N·m {kgf·cm, in·lbf} 7.9—11.7
{80—120, 70—104}
A6E81301126
A6E8130W002

CONTROL SYSTEM
U–19
U
1Q Evaporator
temperature
sensor input
signalEvaporator
temperature sensorDepends on temperature
surrounding sensor
See Figure
1•Inspect for continuity
(Climate control unit—
evaporator temperature
sensor: 1Q—B, 1I—A)
•Inspect for short circuit
(Climate control unit—
evaporator temperature
sensor: 1Q—B)
•Inspect evaporator
temperature sensor
•Inspect terminal voltage of
climate control unit (2H, 2L)
1R—— —— —
1S Solar radiation
sensor inputSolar radiation
sensorIncandescent light (60W)
shining on solar
radiation sensor from
distance of approx.
100mm {3.9 in}4.0•Inspect for continuity or
short circuit (Climate control
unit—solar radiation sensor:
1S—B, 1B—A)
•Inspect terminal voltage of
climate control unit (1B)
•Inspect solar radiation
sensor Light to solar radiation
sensor blockBelow 1.0
1T GND Ground Under any condition
Below 1.0•Inspect for continuity
(Climate control unit—
ground: 1T—GND)
•Inspect center panel
1U Potentiometer
signalAir mix actuator Set temperature at MAX
COLD0.6•Inspect for continuity or
short circuit (Climate control
unit—air mix actuator: 1U—
C)
•Inspect air mix actuator
•Inspect terminal voltage of
climate control unit (1B) Set temperature at MAX
HOT
4.3
1V—— —— —
1W Potentiometer
signalAirflow mode
actuatorVENT mode 4.3•Inspect for continuity or
short circuit (Climate control
unit—airflow mode actuator:
1W—C)
•Inspect airflow mode
actuator
•Inspect terminal voltage of
climate control unit (1B) BI-LEVEL mode 3.3
HEAT mode 2.3
HEAT/DEF mode 1.5
DEFROSTER mode
0.6
1X Hazard warning
SW signalHazard warning
switchHazard warning switch is
off
12•Inspect for continuity or
short circuit (Climate control
unit—flasher unit: 1X—H)
•Inspect flasher unit
Hazard warning switch is
on Below 1.0•Inspect terminal voltage of
climate control unit (1T)
•Inspect center panel
2A Panel light control
signalPanel light control
switchHeadlight switch ON and
panel light control switch
at max. illumination
0.2•Inspect for continuity
(Climate control unit— panel
light control switch: 2A—C)
(Panel light control switch—
ground: C—GND)
•Inspect panel light control
switch
Headlight switch ON and
panel light control switch
at min. illumination10.2•Inspect for short circuit
(Climate control unit— panel
light control switch: 2A—C) Terminal Signal Connected to Test condition Voltage (V) Action