Diagnostic Routine 220/320- Shift Concerns: No 1-2 Shift (Automatic)

WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.

SHIFT CONCERNS: NO 1-2 SHIFT (AUTOMATIC)

Possible Component	Reference/Action
220 - ELECTRICAL ROUTINE
Powertrain Control System
Electrical Inputs/Outputs, Vehicle Wiring Harnesses, Powertrain Control Module (PCM), Shift Solenoids, (SSA, SSB), Digital TR Sensor, Internal Wire Harness NOTE: If SSA is ON, it equals a third gear start.	Run On-Board Diagnostic. Refer to INTRODUCTION - CNG, FLEX-FUEL & GASOLINE for diagnosis. Go To PINPOINT TEST A: SHIFT SOLENOID or Go To PINPOINT TEST D: DIGITAL TRANSMISSION RANGE (TR) SENSOR . Refer to PINPOINT TESTS - NON OSC EQUIPPED VEHICLES . If DTC P1700 is present check for a low transaxle fluid level, then continue to Hydraulic/Mechanical Routines and repair as required. Clear codes. Road Test and rerun On-Board Diagnostic.
320 - HYDRAULIC/MECHANICAL ROUTINE
Incorrect Pressures
Line pressure, EPC pressure	Check pressure at line, and EPC taps. Carry out Line Pressure Test. Refer to SPECIAL TESTING PROCEDURES . See the LINE PRESSURE CHART . If not OK, check Main Control Valve Body.
Main Control Valve Body
Bolts out of torque specification	Tighten bolts to specification.
Gaskets and Separator Plate - damaged, off location	Inspect for damage. Install new as required.
1-2 Shift Valve, Springs, Clips - loose, stuck, missing, misassembled	Inspect. Repair as required.
SSA and SSB not functioning correctly	Activate the solenoid using the Transmission Tester. If the solenoid operation cannot be felt when placing hand on solenoid, install a new solenoid. Inspect O-rings for damage. Repair as required.
Pump Assembly
Porosity/cross leaks	Inspect. Install new as required.
Gasket - damaged, off location	Inspect for damage. Install new as required.
Component damaged	Inspect for damage, missing ball. Install new pump assembly if required.
1-2 Accumulator Assembly
	Carry out Air Pressure Test. Refer to SPECIAL TESTING PROCEDURES .
Piston Seals, Springs - damaged, missing	Inspect for damage. Install new as required
Support Assembly - Driven Sprocket
Seals - damaged, missing	Inspect for damage, missing or blockage. Install new as required.
Holes - blocked
Low One-Way Clutch Assembly
Not overrunning, damaged	Inspect for damage. Install new as required.
Intermediate Clutch Assembly
	Carry out Air Pressure Test. Refer to SPECIAL TESTING PROCEDURES .
Seals - damaged	Inspect for damage. Install new as required.
Piston - damaged	Inspect for damage. Install new as required.
Friction - damaged, worn	Inspect for damage. Install new as required.
Cylinder Hub Lube Grooves - blocked, damaged	Inspect for damage. Install new as required
Return Spring Assembly - damaged	Inspect for damage. Install new as required
Front Planetary Carrier
Damaged	Inspect for damage. Repair as required.