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Engagement Concern: Delayed/Soft Forward and Reverse

ENGAGEMENT CONCERN: DELAYED/SOFT FORWARD AND REVERSE - DIAGNOSTIC ROUTINES

Possible Component Reference/Action
209 - ELECTRICAL ROUTINE 
Powertrain Control System   
  • Electrical inputs/outputs, Transmission Range (TR) sensor, Transmission Fluid Temperature (TFT) sensor, Turbine Shaft Speed (TSS) sensor, Line Pressure Control (LPC) solenoid, vehicle wiring harnesses, PCM
Solenoid Body   
  • Incorrect solenoid body strategy data stored in the PCM
  • Verify solenoid body strategy data stored in the PCM, download new identification and strategy as necessary. Refer to SOLENOID BODY STRATEGY .
309 - HYDRAULIC/MECHANICAL ROUTINE 
Transmission Fluid Level   
  • Low transmission fluid level
  • Transmission fluid condition
Selector Lever Linkage (Internal/External)   
  • Damaged, out of adjustment
Incorrect Pressures   
  • Line pressure, LPC  pressure - low
  • Carry out Line Pressure and Stall Speed Tests. Refer to SPECIAL TESTING PROCEDURES . See the Line Pressure Chart  for specifications. If pressures are low, check the following possible components: Main Control, Pump Assembly and LPC  solenoid.
Transmission Fluid Filter and Seal Assembly   
  • Plugged, damaged, not correctly seated
  • Inspect for damage. Install a new filter and seal assembly.
  • Filter, seal - damaged
  • Inspect for damage. Install a new filter and seal assembly.
Main Controls   
  • Bolts out of torque specification
  • Tighten bolts to specification.
  • Gaskets and separator plate - damaged, off location
  • Inspect for damage. Install new as required.
  • Seals, manual valve, main regulator valve - missing, damaged or misassembled
  • Inspect for damage. Repair or install new as required.
Pump Assembly   
  • Bolts out of torque specification
  • Tighten bolts to specification.
  • Worn/cross leaks - leaking
  • Install a new pump assembly.
  • Components damaged
  • Inspect for damage. Install new as required.