P0720

P0720 OUTPUT SPEED SENSOR





Description
The output speed sensor detects the revolution of the parking gear and emits a pulse signal. The pulse signal is transmitted to the TCM which converts it into vehicle speed.




DTC Logic

DTC DETECTION LOGIC

DTC DETECTION LOGIC:

DTC CONFIRMATION PROCEDURE

CAUTION:
- Always drive vehicle at a safe speed.
- Be careful not to rev engine into the red zone on the tachometer.

NOTE:
If "DTC CONFIRMATION PROCEDURE" has been previously performed, always turn ignition switch
OFF. Then wait at least 10 seconds before performing the next test.
1.CHECK OUTPUT SPEED SENSOR AND VEHICLE SPEED SIGNAL
With CONSULT-III
1. Start the engine.
2. Select "Data Monitor" in "TRANSMISSION".
3. Drive vehicle and check for an increase of "VHCL/S SE-A/T" value in response to "VHCL/S SE-MTR" value.

VHCL/S SE-A/T : Approximately matches the speedometer reading.
VHCL/S SE-MTR : Approximately matches the speedometer reading.

Are "VHCL/S SE-A/T" and "VHCL/S SE-MTR" values correct?
YES - GO TO 2.
NO - Go to P0720.
2.CHECK DTC DETECTION 1
With CONSULT-III
1. Select "Data Monitor" in "TRANSMISSION".
2. Drive vehicle and maintain the following conditions for at least 5 consecutive seconds.

VHCL/S SE-A/T : 30 km/h (19 MPH) or more
ACCELE POSI : More than 1.0/8
SLCT LVR POSI : "D" position
Drive location : Driving the vehicle uphill (increased engine load) will help maintain the driving conditions required for this test.

With GST
Follow the procedure "With CONSULT-III".
Is "P0720" detected?
YES - Go to P0720.
NO - GO TO 3.
3.CHECK DTC DETECTION 2
With CONSULT-III
1. Select "Data Monitor" in "TRANSMISSION".
2. Drive vehicle and maintain the following conditions for at least 5 consecutive seconds.

ACCELE POSI : More than 1.0/8
ENGINE SPEED : 3,500 rpm or more
SLCT LVR POSI : "D" position
Drive location : Driving the vehicle uphill (increased engine load) will help maintain the driving conditions required for this test.

With GST
Follow the procedure "With CONSULT-III".
Is "P0720" detected?
YES - Go to P0720.
NO - Check intermittent incident. Refer to Intermittent Incident.




Diagnosis Procedure
1.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to Main Power Supply and Ground Circuit.
Is the inspection result normal?
YES - GO TO 2.
NO - Repair or replace damaged parts.
2.CHECK SUB-HARNESS
1. Remove control valve with TCM. Refer to Exploded View.
2. Disconnect transmission range switch connector and TCM connector.
3. Check continuity between transmission range switch connector terminals and TCM connector terminals.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace damaged parts.
3.DETECT MALFUNCTIONING ITEM
Check the following.
- Check terminals of transmission range switch connector and TCM connector, and harness cladding for damage.
- Check connector for loose connection.
Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace damaged parts.
4.REPLACE THE OUTPUT SPEED SENSOR AND CHECK DTC
1. Replace the output speed sensor. Refer to (2WD) or Exploded View, Disassembly (AWD).
2. Reinstall any parts removed.
3. Perform "DTC CONFIRMATION PROCEDURE". Refer to P0720.
3. Perform "DTC CONFIRMATION PROCEDURE". Refer to P0720.
Is the inspection result normal?
YES - INSPECTION END
NO - Replace the control valve with TCM. Refer to Exploded View.