LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Saturn >> 2000 >> LS2 Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Shift Interlock System >> Symptom Tests >> Shift Lock Control Inoperative >> "Y" Body
April 5, 2026: LEMON Manuals is launched! Read the announcement.

"Y" Body

  1. Disconnect Park/Neutral Position (PNP) switch 7-pin connector. Turn ignition switch to ON position. Measure voltage between PNP switch 7-pin connector terminal "C" and ground. See Figure. If voltage is 10-14 volts, go to next step. If voltage is not 10-14 volts, go to step  7.
  2. Place gearshift lever in "P" position. Turn ignition switch to OFF position. Check for continuity between PNP switch 7-pin connector terminals "B" and "C" (component side). If continuity is present, go to next step. If continuity is not present, check PNP switch adjustment. Adjust as necessary, recheck for continuity, then go to step  11. If adjustment is okay, replace PNP switch, then go to step  11.
  3. Disconnect brakelight switch 4-pin connector C2. Check for continuity between brakelight switch 4-pin connector C2 terminal "A" and PNP switch 7-pin connector terminal "B". See Figure and Figure . If continuity is present, go to next step. If continuity is not present, repair open in circuit between brakelight switch 4-pin connector C2 terminal "A" and PNP switch 7-pin connector terminal "B", then go to step  11. See WIRING DIAGRAMS .
  4. Check for continuity between brakelight switch 4-pin connector C2 terminals "A" and "B". See Figure. DO NOT apply brake pedal. If continuity is present, go to next step. If continuity is not present, check brakelight switch adjustment. Adjust as necessary, then go to step  11. If adjustment is okay, replace brakelight switch, then go to step  11.
  5. Disconnect BTSI solenoid 4-pin connector. Check for continuity between BTSI solenoid 4-pin connector terminal "C" and brakelight switch 4-pin connector C2 terminal "B". See Figure and Figure . If continuity is present, go to next step. If continuity is not present, check for an open in circuit between BTSI solenoid 4-pin connector terminal "C" and brakelight switch 4-pin connector C2 terminal "B". See WIRING DIAGRAMS . Repair as necessary, then go to step  11.
  6. Measure resistance between BTSI solenoid 4-pin connector terminal "D" and ground. See Figure. If resistance is less than .5 ohm, replace BTSI solenoid, then go to step  11. If resistance is .5 ohm or more, repair open in circuit between BTSI solenoid 4-pin connector terminal "D" and ground (G203), located behind right kick panel. See WIRING DIAGRAMS . Repair as necessary, then go to step  11.
  7. Check BTSI BU minifuse® No. 21 (10-amp) for an open. If fuse is blown, go to next step. If fuse is okay, check for an open in circuit between BTSI BU minifuse® (10-amp) terminal "A" and PNP switch 7-pin connector terminal "C". See Figure. See WIRING DIAGRAMS . Repair as necessary, then go to step  11.
  8. Remove BTSI BU minifuse® No. 21 (10-amp). Ensure PNP switch 7-pin connector is disconnected. Check for continuity between PNP switch 7-pin connector terminal "C" and ground. See Figure. If continuity is not present, go to next step. If continuity is present, repair short to ground in circuit between PNP switch 7-pin connector terminal "C" and BTSI BU minifuse® No. 21 (10-amp) terminal "A". See WIRING DIAGRAMS . Repair as necessary, then go to step  11.
  9. Disconnect brakelight switch 4-pin connector C2. Check for continuity between PNP switch 7-pin connector terminal "B" and ground. See Figure. If continuity is not present, go to next step. If continuity is present, check for short to ground in circuit between PNP switch 7-pin connector terminal "B" and brakelight switch 4-pin connector C2 terminal "A". See WIRING DIAGRAMS . Repair as necessary, then go to step  11.
  10. Check for short to ground in circuit between brakelight switch 4-pin connector C2 terminal "B" and BTSI solenoid 4-pin connector terminal "B". See Figure and Figure . See WIRING DIAGRAMS . Repair as necessary, then go to next step.
  11. Ensure all components disconnected or removed during testing are reconnected and installed on vehicle. Ensure BTSI system operates correctly. See SHIFT INTERLOCK SOLENOID  under DESCRIPTION & OPERATION. If system does not operate correctly, repeat step  1.
scientia non olet · About LEMON Manuals