Part 2

DTC P1770 (P0705): Transmission Range Switch System (Open Circuit)(continued)

STEP 20. Check PCM, connector B-21 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 PCM, connector B-21 terminal 77 and transmission range switch connector B-110 terminal 4.





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





STEP 22. Check the transmission range switch.





Measure the resistance between the terminals for each transmission range as indicated in the table below.





NOTE: For vehicles with sport mode, four positions (P, R, N, D) are used.

Q: Is the measured resistance less than 2 ohms for each transmission range?
YES: Go to Step 23.
NO: Replace the transmission range switch.





STEP 23. Check transmission range switch connector B-110 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 transmission range switch output voltage at PCM connector B-21 by using check harness special tool MB991923.





1) Disconnect all the connectors from the PCM.





2) Connect special tool MB991923 (check harness) between the PCM and the body-side harness connector.
3) Turn the ignition switch to the "ON" position.
4) Move the selector lever to the "D" position.





5) Measure the voltage between terminal 73 and ground.
^ The voltage should equal battery voltage (approximately l2 volts).
6) 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 B-21 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 PCM connector B-21 terminal 73 and transmission range switch connector B-110 terminal 1.





Q: Is the harness wire in good condition?
YES [Vehicles without sport mode]: Go to Step 5.
YES [Vehicles with sport mode]: Go to Step 27.
NO: Repair or replace the harness wire.





STEP 27. Check intermediate connector A-1 3 and shift switch assembly connector C-20 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 28.
NO: Repair or replace the damaged components.





STEP 28. Check harness for short circuit to ground between transmission range switch connector B-110 terminal 1 and shift switch assembly connector C-20 terminal 1.





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





STEP 29. Check the transmission range switch.





Measure the resistance between the terminals for each transmission range as indicated in the table below.





NOTE: For vehicles with sport mode, four positions (P, R, N, D) are used.

Q: Is the measured resistance less than 2 ohms for each transmission range?
YES: Go to Step 30.
NO: Replace the transmission range switch.





STEP 30. Check transmission range switch connector B-110 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. Measure the transmission range switch output voltage at PCM connector B-21 by using check harness special tool MB991923.





1) Disconnect all the connectors from the PCM.





2) Connect special tool MB991923 (check harness) between the PCM and the body-side harness connector.
3) Turn the ignition switch to the "ON" position.
4) Move the selector lever to the "3" position.





5) Measure the voltage between terminal 62 and ground.
^ The voltage should measure battery positive voltage.
6) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage battery positive voltage?
YES: Go to Step 11.
NO: Go to Step 32.

STEP 32. Check PCM, connector B-21 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 33.
NO: Repair or replace the damaged components.

STEP 33. Check harness for open circuit or short circuit to ground between PCM, connector B-21 terminal 62 and transmission range switch connector B-110 terminal 5.





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





STEP 34. Check the transmission range switch.





Measure the resistance between the terminals for each transmission range as indicated in the table below.





NOTE: For vehicles with sport mode, four positions (P, R, N, D) are used.

Q: Is the measured resistance less than 2 ohms for each transmission range?
YES: Go to Step 35.
NO: Replace the transmission range switch.





STEP 35. Check transmission range switch connector B-110 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. Measure the transmission range switch output voltage at PCM connector B-21 by using check harness special tool MB991923.





1) Disconnect all the connectors from the PCM.





2) Connect special tool MB991923 (check harness) between the PCM and the body-side harness connector.
3) Turn the ignition switch to the "ON" position.
4) Move the selector lever to the "2" position.





5) Measure the voltage between terminal 75 and ground.
^ The voltage should measure battery positive voltage.
6) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage battery positive voltage?
YES: Go to Step 11.
NO: Go to Step 37.

STEP 37. Check PCM, connector B-21 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 38.
NO: Repair or replace the damaged components.

STEP 38. Check harness for open circuit or short circuit to ground between PCM, connector B-21 terminal 75 and transmission range switch connector B-110 terminal 2.





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





STEP 39. Check the transmission range switch.





Measure the resistance between the terminals for each transmission range as indicated in the table below.





NOTE: For vehicles with sport mode, four positions (P, R, N, D) are used.

Q: Is the measured resistance less than 2 ohms for each transmission range?
YES: Go to Step 40.
NO: Replace the transmission range switch.





STEP 40. Check transmission range switch connector B-110 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. Measure the transmission range switch output voltage at PCM connector B-21 by using check harness special tool MB991923.





1) Disconnect all the connectors from the PCM.





2) Connect special tool MB991923 (check harness) between the PCM and the body-side harness connector.
3) Turn the ignition switch to the "ON" position.
4) Move the selector lever to the "L" position.





5) Measure the voltage between terminal 72 and ground.
^ The voltage should measure battery positive voltage.
6) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage battery positive voltage?
YES: Go to Step 11.
NO: Go to Step 42.

STEP 42. Check PCM, connector B-21 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 43.
NO: Repair or replace the damaged components.

STEP 43. Check harness for open circuit or short circuit to ground between PCM, connector B-21 terminal 72 and transmission range switch connector B-110 terminal 6.





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





STEP 44. Check PCM connector B-20 and shift switch assembly connector C-20 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 45.
NO: Repair or replace the damaged components.





STEP 45. Check harness for short circuit to ground between PCM, connector B-20 terminal 39 and shift switch assembly connector C-20 terminal 6.





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