Circuit/System Testing

NOTE:

You must perform the Circuit/System Verification first.

1. Engine idling at the normal operating temperature.
2. Verify the transmission line pressures are within the specified range. Refer to Line Pressure Check (Non Hybrid) , and Solenoid Valve Pressure (Gen 2) .
   • If the pressures are not within range 

     Refer to Fluid Pressure High or Low .

   • If the pressures are within range 
3. Ignition OFF, remove the Q8 Control Solenoid Valve Assembly.
4. Verify the pressure changes for all solenoid valves when performing the solenoid valve test. Refer to Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test .
   • If the pressure does not change 

     Replace the Q8 Control Solenoid Valve Assembly.

   • If the pressure changes 
5. Verify the conditions listed below do not exist. Repair or replace as necessary.

P2714 Channel Plate and Spacer Plate 

Oil channels or orifices blocked by debris.

P2714 or P2715 Control Valve Body Assembly 

2-6 clutch regulator valve stuck/sticking, debris, binding, damaged valve, or scored bore.

P2714 Automatic Transmission Fluid Filter Assembly 

Oil filter or filter seal loose or damaged.

P2714 Torque Converter (w/fluid pump) Housing Assembly 

Fluid pump housing/gear damaged/scored.

P2714 Trans case and 1-2-3-4 clutch backing plate retainer ring 

1-2-3-4 clutch backing plate retaining ring not seated/oriented correctly at trans case groove.

P2714 or P2715 Transmission case, 2-6 clutch piston, spring retaining ring, reaction sun gear

• 2-6 clutch return spring retaining ring not seated in groove
• 2-6 clutch piston assembly - seal damaged or leaking
• 2-6 clutch plates worn or damaged
• 2-6 clutch plates will not slide over the reaction sun gear shell freely

P2714 or P2715 Q8 Control Solenoid Valve Assembly

• Pressure Control Solenoid Valve 4 Stuck ON/OFF.
• Control signal fluid supply leak - valve body filter plate assembly cracked or damaged gasket seal.
• O-ring seals leaking.