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Excessive shock or flares on all upshifts and downshifts

Probable cause(s)
  1. A/T clutch pressure control solenoid valve B defective
  2. A/T clutch pressure control solenoid valve C defective
  3. Input shaft (mainshaft) speed sensor defective
  4. Output shaft (countershaft) speed sensor defective
  5. ATF temperature sensor defective
  6. Foreign material in separator plate orifice
Notes
  • Check for a stored DTC, and check for loose connections.
  • Test the solenoid valve function with the HDS.
  • Inspect the A/T clutch pressure control solenoid valve body gasket, ATF feed pipes, and O-rings for wear and damage.
  • Check the input shaft (mainshaft) speed sensor and output shaft (countershaft) speed sensor installation.
  • Inspect the sensor O-ring for wear and damage.
  • Check for clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice.