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Engagement Concern: No Forward

ENGAGEMENT CONCERN: NO FORWARD - DIAGNOSTIC ROUTINES

Possible Component Reference/Action
201 - ELECTRICAL ROUTINE 
Powertrain Control System   
  • No electrical concerns
301 - HYDRAULIC/MECHANICAL ROUTINE 
Transmission Fluid Level   
  • Low transmission fluid level.
  • Transmission fluid condition
Selector Lever Linkage (Internal/External)   
  • Damaged or out of adjustment
Incorrect Pressures   
  • Line Pressure Control (LPC) solenoid stuck low
  • Check pressure at line pressure tap. Carry out Line Pressure Tests and Stall Speed Tests. Refer to SPECIAL TESTING PROCEDURES . See the Line Pressure Chart  for specification. If pressures are low, check the following possible components:
    • Main control valve body
    • Pump assembly
    • LPC  solenoid
Main Control Valve Body   
  • Bolts out of torque specification
  • Adjust bolts to specification.
  • Gaskets and separator plate - damaged, off location
  • Inspect gaskets for damage. Install new as required.
  • Manual control valve - damaged
  • Inspect for damage. Install new as required.
Pump Assembly   
  • Bolts out of torque specification
  • Inspect for damage. Install a new pump as required.
  • Porosity/cross leaks/ball missing or leaking
  • Inspect for damage. Install a new pump as required.
  • Components - damaged
  • Inspect for damage. Install a new pump as required.