1994 Geo Metro XFiFACTORY OEM SERVICE PROCEDURE

Park/Neutral Position Switch

Disconnect park/neutral position switch. Using ohmmeter, check for continuity between specified wires with gearshift in selected position. See PARK/NEUTRAL POSITION SWITCH CONTINUITY  . Continuity should exist between appropriate wires with gearshift in corresponding position as listed.

NOTE: On Metro A/T, ECM receives gear position signals from Transaxle Control Module (TCM). Park/neutral position switch provides gear position signal to TCM.
PARK/NEUTRAL POSITION SWITCH CONTINUITY

Gear Position Wire Colors
Park Yellow & Blue/White
" Black & Blue/White
Reverse Yellow & Red
" Black & Red
Neutral Yellow & Blue
" Black & Blue
Drive Yellow & Green
" Black & Green
2nd Gear Yellow & Green/Red
" Black & Green/Red
Low Yellow & Green/Blue
" Black & Green/Blue
NOTE: If power steering pressure switch fails to close, or open circuit in wiring exists between ECM and pressure switch, engine may stall when wheels are turned. If power steering pressure switch fails to open or short to ground exists in wiring between ECM and pressure switch, idle quality will be affected.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.