DTC P0715 [FN4A-EL]


B3E050219090W13

DTC P0715

Input/turbine speed sensor circuit malfunction

DETECTION CONDITION

• When all conditions below are satisfied and 0.7 s or more have passed.
- D or M range of TR switch input
- Driving vehicle at vehicle speed of 40 km/h {25 mph} or more
- Input/turbine speed sensor signal not input
Diagnostic support note:
• This is a continuous monitor (CCM).
• The MIL illuminates if the PCM detects the above malfunction conditions during the first drive cycle.
• A PENDING CODE is not available.
• FREEZE FRAME DATA is available.
• The AT warning light illuminates.
• The DTC is stored in the PCM memory.

POSSIBLE CAUSE

• Input/turbine speed sensor malfunction
• Short to ground in wiring harness between input/turbine speed sensor terminal A and PCM terminal 1K (Z6)/1Q (LF)
• Short to ground in wiring harness between input/turbine speed sensor terminal B and PCM terminal 1O (Z6)/1M (LF)
• Open circuit in wiring harness between input/turbine speed sensor terminal A and PCM terminal K (Z6)/1Q (LF)
• Open circuit in wiring harness between input/turbine speed sensor terminal B and PCM terminal 1O (Z6)/1M (LF)
• Damaged connectors between input/turbine speed sensor and PCM
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1

VERIFY FREEZE FRAME DATA HAS BEEN RECORDED

• Has the FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2

VERIFY RELATED REPAIR INFORMATION AVAILABILITY

• Verify related Service Bulletins and/or on-line repair information availability.
• Is any related repair information available?
Yes
Perform repair or diagnosis according to the available repair information.
• If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3

VERIFY CURRENT INPUT SIGNAL STATUS

• Turn the ignition switch to the LOCK position.
• Start the engine.
• Measure the frequency of input/turbine speed sensor using a oscilloscope.
- IG ON: 0 Hz
- Idle: Within 320-374 Hz (P, N position)
• Are frequencies of input/turbine speed sensor within specifications?
Yes
Go to the intermittent concern troubleshooting procedure.
No
Go to the next step.
4

INSPECT INPUT/TURBINE SPEED SENSOR CONNECTOR FOR POOR CONNECTION

• Turn the ignition switch to the LOCK position.
• Disconnect the input/turbine speed sensor connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is the connection normal?
Yes
Go to the next step.
No
Repair or replace the connector and/or terminals, then go to Step 10.
5

INSPECT INPUT/TURBINE SPEED SENSOR RESISTANCE

• Measure the resistance between the input/turbine speed sensor terminals (part-side).
• Is the resistance within 250-600 ohms between input/turbine speed sensor terminals (part-side)?
Yes
Go to the next step.
No
Replace the input/turbine speed sensor, then go to Step 10.
6

INSPECT INPUT/TURBINE SPEED SENSOR

• Remove input/turbine speed sensor.
• Is there iron powder stuck on input/turbine speed sensor?
Yes
Clean the input/turbine speed sensor, then go to Step 10.
No
Go to the next step.
7

INSPECT PCM CONNECTOR FOR POOR CONNECTION

• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is the connection normal?
Yes
Go to the next step.
No
Repair or replace the connector and/or terminals, then go to Step 10.
8

INSPECT INPUT/TURBINE SPEED SENSOR CIRCUIT FOR OPEN CIRCUIT

• Inspect the following input/turbine speed sensor terminals (wiring harness-side) and PCM terminals (wiring harness-side):
- A and 1K (Z6)/1Q (LF)
- B and 1O (Z6)/1M (LF)
• Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then go to Step 10.
9

INSPECT INPUT/TURBINE SPEED SENSOR CIRCUIT FOR SHORT TO GROUND

• Inspect input/turbine speed sensor terminal (wiring harness-side) and body ground.
- A and body ground
- B and body ground
• Is there continuity?
Yes
Repair or replace the wiring harness, then go to the next step.
No
Go to the next step.
10

VERIFY TROUBLESHOOTING OF DTC P0715 COMPLETED

• Make sure to reconnect all the disconnected connectors.
• Clear the DTC from the memory using the WDS or equivalent.
• Drive the vehicle a vehicle speed 40 km/h {25 mph} or more for 0.7 s or more.
• Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
No
Go to the next step.
11

VERIFY AFTER REPAIR PROCEDURE

• Perform the "After Repair Procedure".
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.