Excessive idle vibration in N and P positions/modes

Probable cause(s)

• TCM defective (1.5 L engine)
• PCM defective (except 1.5 L engine)
• Engine output low
• Forward clutch defective
• Input shaft assembly worn or damaged
• Reverse brake defective
• Reverse brake piston defective
• Torque converter assembly defective
• Torque converter ring gear worn or damaged
• Transmission assembly and drive plate installation defective

Notes 

• Adjust the engine output.
• Inspect the clearance between the forward clutch end-plate and the top disc . If the clearance is out of tolerance, replace the input shaft assembly.
• Inspect the input shaft assembly for wear and damage. If the input shaft assembly is worn or damaged, replace it and also check the related part of the input shaft assembly for wear and damage.
• Inspect the reverse brake piston and the O-rings. Check the spring retainer/return spring assembly for wear and damage. Inspect the clearance between the reverse brake end-plate and the top disc . If the clearance is out of tolerance, inspect the reverse brake discs and reverse brake plates for wear and damage. If the discs and plates are worn or damaged, replace them as a set. If they are OK, adjust the clearance with the reverse brake end-plate.
• Inspect the torque converter assembly for wear and damage. If the torque converter assembly is worn or damaged, replace it as an assembly .