Shift Concerns: No 1-2 Shift (Automatic)

SHIFT CONCERNS: NO 1-2 SHIFT (AUTOMATIC) - DIAGNOSTIC ROUTINES

Possible Component	Reference/Action
220 - ELECTRICAL ROUTINE
Powertrain Control System
Electrical inputs/outputs, vehicle wiring harnesses, PCM, Shift Solenoid C (SSC) and Transmission Range (TR) sensor	Run On-Board Diagnostic (OBD). Refer to INTRODUCTION - GASOLINE MODELS for diagnosis. Go To PINPOINT TEST A and Go To PINPOINT TEST D .
320 - HYDRAULIC/MECHANICAL ROUTINE
Incorrect Pressures
Line pressure	Check pressure at line pressure tap. Carry out Line Pressure Test. Refer to SPECIAL TESTING PROCEDURES . See the Line Pressure Chart for specifications. If not OK, check Main Control. Refer to 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.
Intermediate regulator valve, springs, clips - loose, stuck, missing, misassembled stuck off	Inspect for damage. Repair or install new as required.
SSC not functioning correctly	Activate solenoid using scan tool. Refer to OUTPUT STATE CONTROL (OSC) MODE . Go To PINPOINT TEST A . Install a new solenoid body. Refer to SOLENOID BODY ASSEMBLY . Download a new solenoid body strategy into the PCM. Refer to SOLENOID BODY STRATEGY .
Intermediate Clutch Assembly - Failed Off
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 - damaged	Inspect for damage. Install new as required.
Return spring assembly - damaged	Inspect for damage. Install new as required.
Low/Reverse Clutch Assembly - Failed On
Piston - damaged	Inspect for damage. Install new as required.
Friction - overheated	Inspect for damage. Install new as required.
Cylinder hub - damaged	Inspect for damage. Install new as required.
Return spring assembly - damaged	Inspect for damage. Install new as required.
Pump Assembly
Worn/cross leaks	Inspect for damage. Install new as required.
Component damaged	Inspect for damage. Install a new pump assembly as required.
Low One-Way Clutch (OWC) Assembly
Not overrunning, damaged	Inspect for damage. Install new as required.
Planetary Carrier
Damaged	Inspect for damage. Install new as required.