00652

00652 - Gear Monitoring

00652 - Gear Monitoring: Implausible Signal

Possible Causes

• Automatic Transmission Fluid (ATF) Level not OK
• Vehicle Speed Sensor (G68) dirty/faulty
  • Impulse Wheel dirty or Installation faulty
• Gearbox Speed Sensor (G38) dirty/faulty
  • Impulse Wheel dirty or Installation faulty
• Multi-Function Switch (F125) faulty (but not detected)
• Clutch or Valve Body faulty
• Automatic Transmission Fluid (ATF) Pump faulty

Possible Solutions

• Check Automatic Transmission Fluid (ATF) Level
• Check/Clean/Replace Vehicle Speed Sensor (G68)
• Check/Clean/Replace Gearbox Speed Sensor (G38)
• Check/Replace Multi-Function Switch (F125)
• Check/Replace Clutch and/or Valve Body

Special Notes

• The ratio of engine speed to gearbox output speed in the currently engaged gear is implausible.
• Slip rpm with torque converter lock-up clutch disengaged must be greater than stall speed.