Engagement Concern: Harsh Reverse

ENGAGEMENT CONCERN: HARSH REVERSE - DIAGNOSTIC ROUTINES

Possible Component	Reference/Action
203 - ELECTRICAL ROUTINE
Powertrain Control System
Electrical inputs/outputs, vehicle wiring harnesses, PCM, Mass Air Flow (MAF) sensor, Intake Air Temperature (IAT) sensor, Throttle Position (TP) sensor, Idle Speed Control (ISC), Power Steering Pressure (PSP) sensor, engine rpm, Line Pressure Control (LPC) solenoid, Transmission Fluid Temperature (TFT) sensor, Turbine Shaft Speed (TSS) sensor, Output Shaft Speed (OSS) sensor, Shift Solenoid B (SSB), Shift Solenoid D (SSD) or transaxle solenoid power control circuit open/shorted	Run On-Board Diagnostic (OBD). REFER to the INTRODUCTION - GASOLINE MODELS for diagnosis. Go To PINPOINT TEST A , Go To PINPOINT TEST B , Go To PINPOINT TEST C and Go To PINPOINT TEST E .
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 .
303 - HYDRAULIC/MECHANICAL ROUTINE
Incorrect Pressures
Line pressure, LPC solenoid pressure - high	Carry out Line Pressure and Stall Speed Tests. Refer to SPECIAL TESTING PROCEDURES . Check pressure at line pressure taps. See the Line Pressure Chart for specifications. If high, check the Main Control Valve Body.
Pump Assembly
Bolts out of torque specification	Inspect for damage. Install a new pump as required.
Porosity/cross leaks, pump assembly leaking, plugged hole	Inspect for damage. Install a new pump as required.
Components damaged	Inspect for damage. Install a new pump as required.
Main Controls
Bolts out of torque specification	Tighten bolts to specification.
Gasket and separator plate - damaged, off location	Inspect for damage. Install new as required.
Low/reverse regulator valve - stuck, damaged	Inspect for damage. Install new as required.
Low/reverse boost valve - stuck, damaged	Inspect for damage. Install new as required.
Direct regulator valve - stuck, damaged	Inspect for damage. Install new as required.
Direct boost valve - stuck, damaged	Inspect for damage. Install new as required.
SSB mechanically stuck - high	Install a new solenoid body. Refer to SOLENOID BODY ASSEMBLY .
SSD mechanically stuck - high	Install a new solenoid body. Refer to SOLENOID BODY ASSEMBLY .
Main regulator valve - stuck, damaged	Inspect for damage. Install new as required.
Low/Reverse Clutch Assembly
SSD solenoid stuck low	Inspect for damage. Install a new solenoid body as required. Refer to SOLENOID BODY ASSEMBLY .
Low/Reverse regulator valve stuck	Inspect for damage. Install a new solenoid body as required.
Seals, piston, springs - damaged	Inspect for damage. Repair as required.
Clearance check out of specification	Inspect for damage. Carry out clearance checks.
Friction elements - damaged or worn	Inspect for damage. Repair as required.
Direct Clutch Assembly
Seals, piston, spring - damaged	Inspect for damage. Repair or install new as required.
SSB solenoid stuck	Inspect for damage. Install a new solenoid body as required. Refer to SOLENOID BODY ASSEMBLY .
Direct clutch regulator valve	Inspect for damage. Repair or install new as required.
Clearance check out of specification	Inspect for damage. Carry out clearance checks.
Friction elements - damaged, clearance check incorrect	Inspect for damage. Repair or install new as required.