Engagement Concern: Harsh Reverse

ENGAGEMENT CONCERN: HARSH REVERSE CHART

Possible Component	Reference/Action
203 - ELECTRICAL ROUTINE
Powertrain Control System	Carry out Self-Test; refer to SELF-DIAGNOSTICS - EEC-V - CNG & GASOLINE . Carry out engagement test, EPC test and Go To PINPOINT TEST B: TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR or Go To PINPOINT TEST D: ELECTRICAL PRESSURE CONTROL (EPC) SOLENOID . Check idle speed. Repair as required. Clear DTCs, road test and repeat Self-Test.
Electrical inputs/outputs, vehicle wiring harnesses, PCM, TFT sensor, EPC solenoid
303 - HYDRAULIC/MECHANICAL ROUTINE
Fluid
Incorrect level	Adjust fluid to correct level.
Condition	Inspect condition of fluid.
Engine Driveline	Repair as required.
Looseness in the driveshaft, U-joints or the engine mounts	Repair as required.
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 that the digital TR sensor is correctly adjusted. Adjust the digital TR sensor as necessary.
Damaged or incorrectly adjusted
Incorrect Pressures	Check pressure at line and EPC pressure taps; refer to Line Pressure Chart for specifications. If high, check the following components: main controls, oil filter and seal assembly.
High line pressure, high EPC pressure
Fluid Filter and Seal Assembly
Plugged or damaged	Install a new filter and seal assembly.
Filter seal damaged	Install a new filter and seal assembly.
Main Controls
No. 6 shuttle ball, No. 5 check ball, manual valve, main regulator valve stuck, damaged or missing	Inspect for damage. Repair as required.
Bolts not tightened to specifications	Tighten bolts to specifications.
Gasket damaged	Inspect for damage and install a new gasket. Inspect for damage, contamination. Carry out EPC test in Routine No. 203. Repair as required.
EPC solenoid stuck or damaged
Low Reverse Servo
Seals (piston and cover) damaged	Inspect for damage. Repair as required.
Servo cover retaining ring assembled incorrectly
Anchor pins (case) damaged
Pump Assembly
Bolts not tightened to specifications	Tighten bolts to specifications.
Porosity/cross leaks	Inspect pump assembly. Install new as required.
Gasket damaged	Inspect for damage and install a new gasket. Inspect for damage. Repair as required.
No. 1 and No. 2 seal rings damaged
Reverse Clutch Assembly
Seals, piston damaged	Inspect for damage. Repair as required.
Check ball missing or damaged
Friction elements damaged, worn	-
Return spring piston damaged, worn	-
Low Reverse Band	Inspect for damage. Repair as required.
Band, servo, anchor pin damaged or worn	Inspect for damage. Repair as required.