Engagement Concern: No Forward

DIAGNOSTIC ROUTINES CHART

Possible Component	Reference/Action
201 - ELECTRICAL ROUTINE
No Electrical Concerns
301 - HYDRAULIC/MECHANICAL ROUTINE
Fluid
Incorrect level	Adjust fluid to correct level. Inspect as under Fluid Condition Check; refer to Verification of Condition.
Condition
Shift Linkage	Inspect and repair as required. Verify transmission shift cable adjustment; refer to CABLE ADJUSTMENT . Adjust transmission shift cable as necessary. After repairing transmission shift cable, verify the digital transmission range (TR) sensor is correctly adjusted. Adjust the digital TR sensor as necessary.
Damaged or incorrectly adjusted
Incorrect Pressures	Check pressure at line and forward clutch tap. Refer to Line Pressure Chart for specification. If pressures are low, check the following components: oil filter and seal assembly, main controls, pump assembly, forward clutch assembly.
Low forward clutch pressure, low line pressure
Fluid Filter and Seal Assembly
Plugged, damaged Filter seal damaged	Install a new filter and seal assembly.
Main Controls
3-4 shift valve, main regulator valve, manual valve - stuck, damaged	Inspect for damage. Repair as required.
Bolts not tightened to specifications	Tighten bolts to specifications.
Gaskets damaged	Inspect gaskets for damage and install a new gasket.
2-3 accumulator and seals damaged	Inspect piston, seals and bore for damage. Repair as required. Inspect the diameter for wear.
Pressure regulator valve
Pump Assembly
Bolts not tightened to specifications	Tighten bolts to specifications.
Porosity/cross leaks/ball missing or leaking, plugged hole	Inspect for porosity and leaks. Repair as required.
No. 3 and No. 4 seal rings damaged	Inspect seals for damage. Repair as required. Inspect for damage and install a new gasket.
Gaskets damaged
Forward Clutch Assembly
Seals, piston damaged	Inspect seals for damage. Repair as required.
Check balls damaged, missing, mislocated, not seating correctly	Inspect for mislocation, poor seating, damage. Install a new cylinder as required. Check for abnormal wear, damage. Repair as required.
Friction elements damaged or worn
One-Way Clutch Assembly (Planetary)	Inspect for damage. Repair as required.
Worn, damaged or assembled incorrectly	Inspect for damage. Repair as required.
Output Shaft	Inspect for damage. Install new components as required.
Damaged	Inspect for damage. Install new components as required.