Mazda Mazda6 Workshop Manual Supplement page 611

NO.15 ENGINE FLARES UP OR SLIPS WHEN ACCELERATING VEHICLE
15 Engine flares up or slips when accelerating vehicle
• Engine flares up when accelerator pedal depressed for upshifting.
DESCRIPTION
• Engine flares up suddenly when accelerator pedal depressed for downshifting.
• Malfunction is basically the same as for No.14 "Engine flares up or slips when upshifting or
downshifting".
— If conditions for No.14 worsen, malfunction will develop into No.15.
POSSIBLE
CAUSE
Note
• Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic
End Of Sie
NO.16 JUDDER UPON TORQUE CONVERTER CLUTCH (TCC) OPERATION
16 Judder upon torque converter clutch (TCC) operation
• Vehicle jolts when TCC engaged.
DESCRIPTION
• Poor TCC engagement due to either slippage because TCC piston is stuck or line pressure is low.
Caution
— Torque converter clutch piston slipped, burned
POSSIBLE
CAUSE
— Malfunction of torque converter
Note
• Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic
End Of Sie
NO.17 EXCESSIVE SHIFT SHOCK FROM N TO D OR N TO R POSITION/RANGE
17 Excessive shift shock from N to D or N to R position/range
• Strong shock felt when shifting from N to D or N to R position/range at idle.
DESCRIPTION
• Shift shock may worsen when fail-safe is operating. If no DTC is output, shift shock may worsen due to
poor operation of control valve body or sticking of clutch.
— Clutch burned (N→D: Low clutch, N→R: Reverse clutch or low and reverse brake)
POSSIBLE
CAUSE
— Poor hydraulic operation (Malfunction in range change)
— Idle speed high
— Poor tightening torque of engine mount, exhaust mount
— Line pressure high
Note
• Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic
Diagnostic procedure
STEP
• Does shift shock occur only when engine
1
cold?
• Inspect TFT sensor and related harness:
2
vibration, intermittent open/short circuit.
• Is it okay?
K2–196
TROUBLESHOOTING
and Automatic Transaxle Basic Inspection are conducted.
• If the TCC or piston are stuck, inspect them. In addition, inspect the oil cooler for foreign
particles which may have mixed in with the ATF.
• Line pressure low
• Incorrect throttle position signal
• Malfunction of VSS
• Malfunction of input/turbine speed sensor
• Malfunction of sensor ground
• Malfunction of TCC solenoid valve
• Malfunction of control valve body
and Automatic Transaxle Basic Inspection are conducted.
• Line pressure low
• Incorrect throttle position signal
• Malfunction of TFT sensor
• Malfunction of sensor ground
• Misadjustment of throttle cable
• Malfunction of control valve body
and Automatic Transaxle Basic Inspection are conducted.
INSPECTION
Yes Go to next step.
No Go to Step 3.
Yes Go to next step.
No Repair or replace part if necessary.
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ACTION