2002 MAZDA 6 lock

M–16
ELECTRONIC 4WD CONTROL SYSTEM
ON-BOARD DIAGNOSTICA6E632227100208Outline
•The on-board diagnostic function allows for detecting malfunctions in the input/output signals when the ignition
key is at the ON position.
•The DLC-2, which combines the failure detection and detection maintenance connectors, has been adopted to
improve serviceability. By connecting a WDS or equivalent to the DLC-2, malfunction diagnosis can be carried
out.
•Using a WDS or equivalent DTCs can be retrieved or erased, depending on the screen display, thus improving
serviceability.
Block diagram
.
Self-diagnostic function
Failure detection function
•The failure detection function detects malfunctions in the input/output signal systems of the 4WD CM and
displays them when the ignition key is at the ON position.
•When the ignition key is turned to the ON position, the 4WD CM system begins operation, and the 4WD
warning light illuminates for 3 seconds while the function checks for open circuits. At the same time the function
monitors the condition of the power supply voltage and checks for internal malfunctions.
•Then, once the system is running, the function checks the operating conditions of the 4WD solenoid and the
differential oil temperature sensor at regular intervals to determine whether there is any malfunction.
•If any malfunction is detected during these diagnostic tests, the warning light illuminates according to the
malfunction to alert the driver. Also, a DTC is output to DLC-2 via the CAN line. Also, at the same time the
failure detection result is sent to the memory and fail-safe functions.
9
87
5
4
3
10
13
11
12
6
12
A6E63222010
1 Input part
2 Regular control area
3 Output part
4 Fail-safe function
5 Failure detection function
6 Memory function
7 Failure display function8 External tester communication function
9 Failure diagnosis function
10 4WD warning light
11 DLC-2
12 CAN
13 WDS or equivalent

ELECTRONIC 4WD CONTROL SYSTEM
M–17
M
Memory function
•This function stores DTCs for malfunctions of the input/output signal systems as determined by the failure
detection function. Once a DTC is stored, it is not cleared even if the input/output signal system malfunction
returns to normal when the ignition key is turned to the LOCK position (engine OFF).
•Since DTCs are stored in the non-volatile memory inside the 4WD CM, they are not cleared even if the battery
is disconnected. Therefore, it is necessary to clear the memory when maintenance has been completed. For
clearing DTCs, refer to the procedures in the Workshop Manual.
•When inspecting DTCs using a WDS or equivalent, only one memory stored DTC at a time can be displayed.
Therefore, when multiple DTCs have been stored, it is necessary to inspect for DTCs again after repairing and
clearing the present DTC to ensure that there are no more DTCs present in the memory.
Fail-safe function
•When the failure detection function determines that there is a malfunction, the 4WD warning light illuminates to
alert the driver. At this time, the fail-safe function suspends control or takes other measures to ensure that
driving stability is not lost.
X:Available
*1: Does not illuminate when only the coupling torque request signal from the DSC HU/CM cannot be received.*2: Only integrated DSC control is prohibited when only the coupling torque request signal from the DSC HU/CM
cannot be received.
External tester communication function
•This function allows for the storing and clearing of DTCs due to a communication link between the 4WD CM
and an external tester.
End Of Sie
DTC Malfunction location4WD warning
lightconditionDTC stored in
memoryControl condition
P1887 System wiring Illuminated X Stop
P1888 Differential oil temperature sensor Illuminated X Stop
U0100 PCM communication system Illuminated X Stop
U0101 TCM communication system Illuminated X Stop
U0121 DSC communication system
Illuminated
*1X
Stop*2

REAR AXLE
M–23
M
.
93.2—131.4
{9.6—13.3,
68.8—96.9}
HHG
G
E
E
F
F
AB
A
B
C
C
D
D
86.2—116.6
{8.8—11.9, 63.6—85.9} 18.6—25.5
{1.90—2.63,
13.8—18.8}75.5—94.5
{7.7—9.6, 55.7—69.6}51.0—66.7
{5.3—6.8,
37.7—49.1}43.1—60.8
{4.4—6.1, 31.8—44.8}
235.2—318.5
{24.0—32.4,
173.5—234.9}
9
8
7
5
4
3
1
2
10
1918
17
15
16
14
13
11
12
20
6SST
SST
R
SST
R
R
R
R
75.5—94.5
{7.7—9.6,
55.7—69.6}
86.2—116.6
{8.8—11.9, 63.6—85.9}
86.2—116.6
{8.8—11.9, 63.6—85.9}
N·m {kgf·m, ft·lbf}
A6E63142101
1 ABS wheel-speed sensor
2 Parking brake cable
3 Locknut
(See M–24 Locknut Removal Note)
(See M–28 Locknut Installation Note)
4 Brake caliper component
5 Disc plate
6 Bolt (stabilizer control link (lower))
7 Bolt (rear lower arm (outer))
(See M–24 Bolt (Rear Lower Arm (Outer)) Removal
Note
8 Rear coil spring
(See M–28 Rear Coil Spring Installation Note)
9 Bolt (rear upper arm (outer))
10 Bolt (shock absorber (lower))
(See M–24 Bolt (Shock Absorber (Lower)) Removal
Note)11 Bolt (lateral link (outer))
(See M–24 Bolt (Lateral Link (Outer)) Removal
Note)
12 Bolt (trailing link (front))
(See M–25 Bolt (Trailing Link (Front)) Removal
Note)
(See M–28 Bolt (Trailing Link (Front)) Installation
Note)
13 Trailing link, knuckle component
14 Wheel hub, knuckle component
15 Wheel hub
(See M–25 Wheel Hub Removal Note)
(See M–27 Wheel Hub Installation Note)
16 Snap ring
17 Wheel bearing
(See M–25 Wheel Bearing Removal Note)
(See M–27 Wheel Bearing Installation Note)

M–24
REAR AXLE
Locknut Removal Note
1. Knock the crimped portion of the locknut outward
using a small chisel and a hammer.
2. Lock the hub by applying the brakes.
3. Remove the locknut.
Bolt (Rear Lower Arm (Outer)) Removal Note
1. Support the lower arm with a jack.
2. Loosen the lower arm bolts (inner).
3. Remove the lower arm bolts (outer).
4. Gradually lower the jack and separate the lower
arm (outer) from the knuckle.
Bolt (Shock Absorber (Lower)) Removal Note
1. Support the trailing link and the knuckle
component with a jack.
2. Remove the lower shock absorber bolts.
Bolt (Lateral Link (Outer)) Removal Note
1. Loosen the lateral link bolts (inner).
2. Remove the lateral link bolts (outer), and remove the lateral link (outer) from the knuckle.
18 Dust cover
(See M–26 Dust Cover Removal Note)
(See M–27 Dust Cover Installation Note)
19 Knuckle20 Wheel hub bolt
(See M–26 Wheel Hub Bolt Removal Note)
(See M–26 Wheel Hub Bolt Installation Note)
A6E0312W021
JACK
A6E63142102
JACK
A6E63142103

M–28
REAR AXLE
Bolt (Trailing Link (Front)) Installation Note
Warning
•Be sure that the trailing link and the knuckle component are supported securely with a jack.
Otherwise, the trailing link and/or the knuckle component may fall, causing death or injury, or
vehicle damage.
1. Support the trailing link and the knuckle
component with a jack.
2. Tighten the bolts at the trailing link (front).
Rear Coil Spring Installation Note
1. Install the coil spring so that its small diameter
end points downward.
2. Set a jack to the bottom of the lower arm, and jack
it up gradually.
Warning
•Be careful when installing the coil spring,
as it may fly out by spring force, causing
death or injury, or vehicle damage.
3. Install the lower arm bolts (outer).
Locknut Installation Note
1. Install a new locknut and stake it as shown.
End Of Sie
JACK
A6E63142103
LOWER SIDE LARGE
DIAMETER
SMALL
DIAMETER
A6E63142106
0.5 mm {0.02 in} OR MORE
A6E0312W015

FRONT DRIVE SHAFT
M–35
M
Boot Band (Wheel Side) Disassembly Note
Note
•The boot band does not need to be removed unless it is being replaced.
1. Remove the boot clamp with end clamp pliers as
shown and discard the clamp.
Boot Band (Transaxle Side) Disassembly Note
1. Pry up the locking clips using a screwdriver.
2. Pull back the end of the band.
Clip Disassembly Note
1. Mark the drive shaft and outer ring for proper
assembly.
Caution
•Mark with paint; do not use a punch.
2. Remove the clip.
A6E6316W004
A6E6316W005
MARK
A6E6316W010

M–38
FRONT DRIVE SHAFT
Standard length
mm {in}
6. Release any trapped air from the boots by
carefully lifting up the small end of each boot with
a cloth wrapped screwdriver.
Caution
•Be careful not to allow the grease to leak.
•Do not damage the boot.
7. Verify that the drive shaft length is within the
specification.
•If not, repeat from Step 5.
Boot Band (Transaxle Side) Assembly Note
1. Fold the band in the direction opposite to the
forward revolving direction of the drive shaft and
use pliers to pull it tight.
2. Lock the end of the band by bending the locking
clips.
Caution
•Install the band into the groove securely.
Boot Band (Wheel Side) Assembly Note
1. Adjust clearance A by turning the adjusting bolt of
the SST.
Clearance A
2.9 mm {0.11 in}
2. Crimp the wheel side small boot band using the
SST. Verify that clearance B is within the
specification.
•If clearance B is more than the specification,
reduce clearance A of the SST and crimp the
boot again.
•If clearance B is less than the specification,
replace the boot band, increase clearance A
of the SST, and crimp the new boot.
Clearance B
2.4—2.8 mm {0.095—0.110 in}
3. Verify that the boot band does not protrude from
the boot band installation area.
•If it does, replace the boot band and repeat Steps 2 and 3.
Left side Right side
666.3—676.3
{26.24—26.62}615.6—625.6
{24.24—24.62}
A6E6316W007
A6E6316W008
A
49 T025 001
ADJUSTING BOLT
A6E0350W012
B
49 T025 001
A6E0350W013

REAR DIFFERENTIAL
M–49
M
End Of SieOIL SEAL (SIDE GEAR) REPLACEMENTA6E6319271002051. Remove the drain plug and the drain differential oil into a container.
2. Install a new washer and the drain plug, and tighten.
3. Remove the rear drive shaft. (See M–43 REAR DRIVE SHAFT REMOVAL/INSTALLATION.)
4. Remove the clip from the drive shaft.
Caution
•Wrap the end of a screwdriver with cloth to prevent scratches to the inside of the differential
casing.
5. Remove the oil seal from the differential casing
using a screwdriver.
6. Apply differential oil to the new oil seal lip.
7. Install the new oil seal to the differential carrier
using the SSTs.
8. After installing the new clip onto the drive shaft,
insert the drive shaft into the differential. (See M–
43 REAR DRIVE SHAFT REMOVAL/
INSTALLATION.)
9. Verify that the drive shaft cannot be pulled out.
10. Add the specified differential oil.
11. fter adding the oil, perform an oil level inspection.
(See M–48 DIFFERENTIAL OIL INSPECTION.)
12. Install a new washer and the oil filler plug, and
tighten.
Tightening torque
39.2—53.9 N·m {4.0—5.4 kgf·m, 29.0—39.7 ft·lbf}
End Of Sie
OIL SEAL (COMPANION FLANGE) REPLACEMENTA6E6319271002061. Drain the differential oil into a container.
2. Remove the propeller shaft. (See L–5 PROPELLER SHAFT REMOVAL/INSTALLATION.)
3. Remove the locknut using the SST.
4. Support the differential using a jack.
A6A63192003
49 G030 79649 G030 797
A6A63192004
49 S120 710
A6A63192005