Mazda CX-7 2007 Workshop Manual page 1001

SYMPTOM TROUBLESHOOTING [AW6A-EL, AW6AX-EL]
NO.18 EXCESSIVE SHIFT SHOCK IS GIVEN WHEN UPSHIFTING AND DOWNSHIFTING[AW6A-EL, AW6AX-
EL]
18 Excessive shift shock is given when upshifting and downshifting
• Excessive shift shock is felt when depressing the accelerator pedal at upshifting.
DESCRIPTION
• During cruising, excessive shift shock is felt when depressing accelerator pedal at downshifting.
• Shift shock may worsen when the fail-safe is operating. The shift shock may worsen if the accelerator
pedal position sensor, APP sensor, input/turbine speed sensor, or VSS signal malfunctions.
— Clutch slippage, burnt (C1 clutch, C2 clutch, C3 clutch, B1 brake)
• Line pressure low, high
• Incorrect accelerator opening signal
• VSS malfunction
• Input/turbine speed sensor malfunction
• TFT sensor malfunction
POSSIBLE
• Shift solenoid C malfunction
CAUSE
• Shift solenoid D malfunction
• Shift solenoid E malfunction
• Line pressure control solenoid malfunction
• TCC control solenoid malfunction
• Shift solenoid F malfunction
• Body GND and sensor GND malfunction
• Control valve body malfunction
— Poor hydraulic operation (Malfunction in range change)
End Of Sie
NO.19 EXCESSIVE SHIFT SHOCK ON TORQUE CONVERTER CLUTCH (TCC)[AW6A-EL, AW6AX-EL]
19 Excessive shift shock on torque converter clutch (TCC)
• Strong shock is felt when the TCC is engaged.
DESCRIPTION
• The troubleshooting flow is the same as No.16 "JUDDER UPON TORQUE CONVERTER CLUTCH
POSSIBLE
CAUSE (TCC) OPERATION".
End Of Sie
NO.20 NOISE OCCURS AT IDLE WHEN VEHICLE IS STOPPED IN ALL POSITIONS/RANGES[AW6A-EL,
AW6AX-EL]
20 Noise occurs at idle when vehicle is stopped in all positions/ranges
• Transaxle is noisy in all positions and ranges when the vehicle is idling.
DESCRIPTION
• The malfunction is in the pressure solenoid or oil pump which causes a high-pitched noise to be emitted
from the transaxle at idle.
Note
• If a noise is emitted during shifting only, the malfunction is in the C1 clutch, C2 clutch, C3 clutch
POSSIBLE
CAUSE
• If a noise is emitted during shifting at certain gears only or during deceleration only, it is gear
• Before following the troubleshooting steps, make sure that the Automatic Transaxle On-Board
Diagnostic procedure
STEP
• Inspect engine condition.
1
• Is there any engine concern (e.g. Rough
idle)?
• Verify test results.
2
— If normal, return to the diagnostic index to service any additional symptoms.
— If malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform
repair or diagnosis.
• If the vehicle is repaired, troubleshooting completed.
• If the vehicle is not repaired or additional diagnostic information is not available, replace the TCM.
End Of Sie
or B1 brake.
noise.
Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See 05-03-3 BASIC
INSPECTION[AW6A-EL, AW6AX-EL].)
INSPECTION
Yes Go to appropriate symptom troubleshooting.
(See 01-03-5 ENGINE SYMPTOM
TROUBLESHOOTING[L3 WITH TC].)
No Replace basic inspection and repair or replace any
malfunctioning parts according to the inspection result
id050310802300
id050310802400
id050310802500
ACTION
05-03–23
05-03