Part 2 of 2

DTC 27: Park/Neutral Position Switch System (Open Circuit)

STEP 15. Check PCM connector C-114 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q: Are the connector and terminals in good condition?
YES: Go to Step 16.
NO: Repair or replace the damaged components.

STEP 16. Check harness for open circuit or short circuit to ground between Park/Neutral position switch connector B16 terminal 7 and PCM connector C-114 terminal 108.








Q: Is the harness wire in good condition?
YES: Go to Step 5.
NO: Repair or replace the harness wire.

STEP 17. Check the Park/Neutral position switch. Measure the resistance between the terminals for each selector position as indicated in the table above.











Q: Is the measured resistance less than 2 ohms for each selector position?
YES: Go to Step 18.
NO: Replace the Park/Neutral position switch.

STEP 18. Check Park/Neutral position switch connector B16 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q: Are the connector and terminals in good condition?
YES: Go to Step 19.
NO: Repair or replace the damaged components.

STEP 19. Measure the Park/Neutral position switch output voltage at PCM connector C-114 by backprobing.





1. Do not disconnect connector C-114.
2. Turn the ignition switch to the "ON" position.
3. Move the selector lever to the "N" position.





4. Measure the voltage between terminal 121 and ground by backprobing.
^ The voltage should measure battery positive voltage.
5. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Does the voltage measure battery positive voltage?
YES: Go to Step 11.
NO: Go to Step 20.

STEP 20. Check PCM connector C-114 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q: Are the connector and terminals in good condition?
YES: Go to Step 21.
NO: Repair or replace the damaged components.

STEP 21. Check harness for open circuit or short circuit to ground between Park/Neutral position switch connector B16 terminal 4 and PCM connector C-114 terminal 121.








Q: Is the harness wire in good condition?
YES: Go to Step 5.
NO: Repair or replace the harness wire.

STEP 22. Check the Park/Neutral position switch.











Measure the resistance between the terminals for each selector position as indicated in the table above.
Q: Is the measured resistance less than 2 ohms for each selector position?
YES: Go to Step 23.
NO: Replace the Park/Neutral position switch.

STEP 23. Check Park/Neutral position switch connector B16 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q: Are the connector and terminals in good condition?
YES: Go to Step 24.
NO: Repair or replace the damaged components.

STEP 24. Measure the Park/Neutral position switch output voltage at PCM connector C-114 by backprobing.





1. Do not disconnect connector C-114.
2. Turn the ignition switch to the "ON" position.
3. Move the selector lever to the "D" position.





4. Measure the voltage between terminal 102 and ground by backprobing.
^ The voltage should equal battery voltage (approximately 12 volts).
5. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Does the voltage measure battery positive voltage?
YES: Go to Step 11.
NO: Go to Step 25.

STEP 25. Check PCM connector C-114 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q: Are the connector and terminals in good condition?
YES: Go to Step 26.
NO: Repair or replace the damaged components.

STEP 26. Check harness for open circuit or short circuit to ground between Park/Neutral position switch connector B16 terminal 1 and PCM connector C-114 terminal 102.








Q: Is the harness wire in good condition?
YES: Go to Step 5.
NO: Repair or replace the harness wire.

STEP 27. Check the Park/Neutral position switch.











Measure the resistance between the terminals for each selector position as indicated in the table above.
Q: Is the measured resistance less than 2 ohms for each selector position?
YES: Go to Step 28.
NO: Replace the Park/Neutral position switch.

STEP 28. Check Park/Neutral position switch connector B16 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q: Are the connector and terminals in good condition?
YES: Go to Step 29.
NO: Repair or replace the damaged components.

STEP 29. Measure the Park/Neutral position switch output voltage at PCM connector C-114 by backprobing.





1. Do not disconnect connector C-114.
2. Turn the ignition switch to the "ON" position.
3. Move the selector lever to the "3" position.





4. Measure the voltage between terminal 109 and ground by backprobing.
^ The voltage should measure battery positive voltage.
5. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Does the voltage measure battery positive voltage?
YES: Go to Step 11.
NO: Go to Step 30.

STEP 30. Check PCM connector C-114 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q: Are the connector and terminals in good condition?
YES: Go to Step 31.
NO: Repair or replace the damaged components.

STEP 31. Check harness for open circuit or short circuit to ground between Park/Neutral position switch connector B16 terminal 5 and PCM connector C-114 terminal 109.








Q: Is the harness wire in good condition?
YES: Go to Step 5.
NO: Repair or replace the harness wire.

STEP 32. Check the Park/Neutral position switch.











Measure the resistance between the terminals for each selector position as indicated in the table above.
Q: Is the measured resistance less than 2 ohms for each selector position?
YES: Go to Step 33.
NO: Replace the Park/Neutral position switch.

STEP 33. Check Park/Neutral position switch connector B16 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q: Are the connector and terminals in good condition?
YES: Go to Step 34.
NO: Repair or replace the damaged components.

STEP 34. Measure the Park/Neutral position switch output voltage at PCM connector C-114 by backprobing.





1. Do not disconnect connector C-114.
2. Turn the ignition switch to the "ON" position.
3. Move the selector lever to the "2" position.





4. Measure the voltage between terminal 122 and ground by backprobing.
^ The voltage should measure battery positive voltage.
5. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Does the voltage measure battery positive voltage?
YES: Go to Step 11.
NO: Go to Step 35.

STEP 35. Check PCM connector C-114 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q: Are the connector and terminals in good condition?
YES: Go to Step 36.
NO: Repair or replace the damaged components.

STEP 36. Check harness for open circuit or short circuit to ground between Park/Neutral position switch connector B16 terminal 2 and PCM connector C-114 terminal 122.








Q: Is the harness wire in good condition?
YES: Go to Step 5.
NO: Repair or replace the harness wire.

STEP 37. Check the Park/Neutral position switch. Measure the resistance between the terminals for each selector position as indicated in the table above.











Q: Is the measured resistance less than 2 ohms for each selector position?
YES: Go to Step 38.
NO: Replace the Park/Neutral position switch.

STEP 38. Check Park/Neutral position switch connector B-16 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q: Are the connector and terminals in good condition?
YES: Go to Step 39.
NO: Repair or replace the damaged components.

STEP 39. Measure the Park/Neutral position switch output voltage at PCM connector C-114 by backprobing.





1. Do not disconnect connector C-114.
2. Turn the ignition switch to the "ON" position.
3. Move the selector lever to the "L" position.





4. Measure the voltage between terminal 110 and ground by backprobing.
^ The voltage should measure battery positive voltage.
5. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Does the voltage measure battery positive voltage?
YES: Go to Step 11.
NO: Go to Step 40.

STEP 40. Check PCM connector C-114 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q: Are the connector and terminals in good condition?
YES: Go to Step 41.
NO: Repair or replace the damaged components.

STEP 41. Check harness for open circuit or short circuit to ground between Park/Neutral position switch connector B16 terminal 6 and PCM connector C-114 terminal 110.








Q: Is the harness wire in good condition?
YES: Go to Step 5.
NO: Repair or replace the harness wire.