Checks 
 | Cause 
 | 
DEFINITION: Transmission main line
pressure that is determined to be high or low. Refer to 
Line Pressure Check
. 
 | 
Automatic Transmission Fluid Level - low pressure only 
 | Low fluid level 
 | 
Thermo Element Assembly - low pressure only 
 | 
|     •  | The thermo element plate pins (120, 123) are misadjusted. |  
  
|     •  | The thermo element (121) or the thermo element plate (122) is
  out of position, missing, or damaged -- causing low fluid level in
the   oil pan. |  
  
 | 
Oil Filter and Seal Assembly 
 | 
|     •  | The oil filter assembly (100) is missing or damaged. |  
  
|     •  | The oil filter seal assembly (101) is missing or damaged, low
  pressure only. |  
  
 | 
Wiring Harness Assembly 
 | The wiring harness assembly (224)
is disconnected or damaged. 
 | 
Oil Pump Assembly 
 | 
|     •  | The following components are worn or damaged - low pressure
 only: |  
  
|        -  | The oil pump cover (201) |  
  
|        -  | The oil pump body (202) |  
  
|        -  | The oil pump vane ring (209) |  
  
|        -  | The oil pump rotor (210) |  
  
|        -  | The oil pump vanes (211) |  
  
|        -  | The oil pump slide oil seal ring (212) |  
  
|        -  | The oil pump slide O-ring seal (213) |  
  
|        -  | The oil pump slide (214) |  
  
|     •  | The oil pump slide (214) is binding, high pressure only. |  
  
|     •  | The oil pump prime springs (222, 223) or the oil pump slide pivot
  pin (215) is missing or damaged, low pressure only. |  
  
|     •  | The oil pump slide seal (220) or the oil pump slide seal support
  (221) is missing or damaged, high pressure only. |  
  
 | 
Pressure Control
Solenoid Valve Assembly 
 | 
|     •  | The pressure control solenoid valve assembly (322) is damaged. |  
  
|     •  | The solenoid valve O-ring seals (305, 316) are missing
 or damaged. |  
  
|     •  | The valve retainer (314) is missing or damaged. |  
  
 | 
Torque Signal Regulator Valve Assembly 
 | 
|     •  | The torque signal regulator valve (321) is binding or damaged. |  
  
|     •  | The valve retainer (314) is missing or damaged. |  
  
 | 
Pressure Regulator Valve Assembly 
 | 
|     •  | The pressure regulator valve (313) is binding or is damaged. |  
  
|     •  | The pressure regulator valve springs (311, 312) is missing or
  damaged. |  
  
|     •  | The reverse boost valve (310) is binding or is damaged, high pressure
  only. |  
  
|     •  | The line boost valve (304) is binding or is damaged, high pressure
  only. |  
  
|     •  | The valve retainer (302) is missing or is damaged. |  
  
 | 
Actuator Feed Limit Valve Assembly - low pressure only 
 | 
|     •  | The actuator feed limit valve (414) is binding or is damaged. |  
  
|     •  | The actuator feed limit valve spring (415) is missing or is damaged. |  
  
|     •  | The actuator feed limit valve spring retainer (416) is missing
  or damaged. |  
  
 | 
Low Blow Off Valve Assembly - low pressure only 
 | 
|     •  | The low blow off valve spring (323) is missing or is damaged. |  
  
|     •  | The low blow off ball valve (324) is missing, binding, or is damaged. |  
  
|     •  | The low blow off valve spring retainer (325) is missing or is
  damaged. |  
  
 |