Mazda CX-7 2007 Workshop Manual page 692

NO.2 TIGHT CORNER BRAKING
2 Tight corner braking
[TROUBLESHOOTING HINTS]
• Because the coupling component locks up easily (similar to direct AWD), rotational difference between the front
and rear wheels cannot be absorbed and brake-like phenomenon occurs.
• Due to the coupling component construction, slight tight corner braking effect occurs during tight cornering on a
paved road. (AWD system is okay. Compare with another same model vehicle to determine malfunction.)
• Coupling component malfunction
• AWD solenoid malfunction
Diagnostic procedure
STEP
1 VERIFY DSC, PCM, AND AWD SYSTEM DTCS
• Verify DSC, PCM, and AWD system DTCs
using the M-MDS.
• Are there any DTCs present?
2 VERIFY TIRE AIR PRESSURE
• Inspect tire air pressure.
• Is it within specification?
3 INSPECT ABS WHEEL-SPEED SENSOR
• Inspect ABS wheel-speed sensor.
• Is it okay?
4 COMPARE WITH SAME MODEL VEHICLE
• Perform simulation driving with another same
model vehicle.
• Does malfunction recur on the same model
vehicle?
5 PERFORM SIMULATION DRIVING WITH AWD
SOLENOID CONNECTOR DISCONNECTED
• Turn ignition key OFF.
• Disconnect AWD solenoid connector.
• Perform simulation driving. (Clear DTC after
simulation driving.)
• Does malfunction recur?
6 INSPECT AWD SOLENOID
• Inspect AWD solenoid.
(See 03-19-11 AWD SOLENOID
INSPECTION)
• Is it okay?
End Of Sie
03-03–4
SYMPTOM TROUBLESHOOTING
INSPECTION
Yes Go to applicable DTC inspection.
No Go to next step.
Yes Go to next step.
No Adjust tire air pressure, then go to next step.
Yes Go to next step.
No Repair or replace malfunctioning part.
Yes AWD system is okay.
No Go to next step.
Yes Replace coupling component. (See 03-19-4 COUPLING
COMPONENT REMOVAL/INSTALLATION.)
No Go to next step.
Yes Inspect harness between AWD solenoid and AWD CM, then
go to next step.
No Replace coupling component. (See 03-19-4 COUPLING
COMPONENT REMOVAL/INSTALLATION.)
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