K2–196
TROUBLESHOOTING
NO.15 ENGINE FLARES UP OR SLIPS WHEN ACCELERATING VEHICLE
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End Of Sie
NO.16 JUDDER UPON TORQUE CONVERTER CLUTCH (TCC) OPERATION
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End Of Sie
NO.17 EXCESSIVE SHIFT SHOCK FROM N TO D OR N TO R POSITION/RANGE
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Diagnostic procedure
15 Engine flares up or slips when accelerating vehicle
DESCRIPTION
• Engine flares up when accelerator pedal depressed for upshifting.
• Engine flares up suddenly when accelerator pedal depressed for downshifting.
POSSIBLE
CAUSE
• 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.
Note
• Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic
and Automatic Transaxle Basic Inspection are conducted.
16 Judder upon torque converter clutch (TCC) operation
DESCRIPTION • Vehicle jolts when TCC engaged.
POSSIBLE
CAUSE
• Poor TCC engagement due to either slippage because TCC piston is stuck or line pressure is low.
Caution
• 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.
— Torque converter clutch piston slipped, burned
• 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
— Malfunction of torque converter
Note
• Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic
and Automatic Transaxle Basic Inspection are conducted.
17 Excessive shift shock from N to D or N to R position/range
DESCRIPTION • Strong shock felt when shifting from N to D or N to R position/range at idle.
POSSIBLE
CAUSE
• 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)
• Line pressure low
• Incorrect throttle position signal
• Malfunction of TFT sensor
• Malfunction of sensor ground
• Misadjustment of throttle cable
• Malfunction of control valve body
— 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
and Automatic Transaxle Basic Inspection are conducted.
STEP INSPECTION ACTION
1 • Does shift shock occur only when engine
cold?
Yes Go to next step.
No Go to Step 3.
2 • Inspect TFT sensor and related harness:
vibration, intermittent open/short circuit.
• Is it okay?
Yes Go to next step.
No Repair or replace part if necessary.
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