CVT

P0725 ENGINE SPEED

Description

The engine speed signal is sent from the ECM to the TCM.


CONSULT Reference Value in Data Monitor Mode

Remarks: Specification data are reference values.







On Board Diagnosis Logic

- This is not an OBD-II self-diagnostic item.
- Diagnostic trouble code "P0725" with CONSULT is detected when TCM does not receive the engine speed signal (input by CAN communication) from ECM.


Possible Cause

Harness or connectors (The ECM to the TCM circuit is open or shorted.)


DTC Confirmation Procedure


CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If "DTC Confirmation Procedure" has been previously performed, always turn ignition switch OFF and wait at least 10 seconds before performing the next test.
After the repair, touch "ERASE" on "SELF-DIAG RESULTS" and then perform the following procedure to confirm the malfunction is eliminated.

WITH CONSULT

1.Turn ignition switch ON and select "DATA MONITOR" mode for "TRANSMISSION" with CONSULT.
2.Start engine and maintain the following conditions for at least 10 consecutive seconds.
PRI SPEED SEN: More than 1000 rpm
3.If DTC is detected, go to .


Diagnosis Procedure


1. CHECK DTC WITH ECM

With CONSULT
1.Turn ignition switch ON. (Do not start engine.)
2.Select "SELF-DIAG RESULTS" mode for "ENGINE" with CONSULT. CONSULT Function (Engine).
OK or NG
OK- GO TO 2.
NG- Check the DTC detected item. CONSULT Function (Engine).

2. CHECK DTC WITH TCM

With CONSULT
1.Turn ignition switch ON. (Do not start engine.)
2.Select "SELF-DIAG RESULTS" mode for "TRANSMISSION" with CONSULT. Trouble Diagnosis.
OK or NG
OK- GO TO 3.
NG-Check the DTC detected item. Trouble Diagnosis.
- If DTC of CAN communication line is detected, go to U1000.

3. CHECK INPUT SIGNALS

With CONSULT
1.Start engine.
2.Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT.
3.While monitoring "ENG SPEED SIG", check for engine speed change corresponding to "ACC PEDAL
OPEN".





OK or NG
OK- GO TO 4.
NG- Check ignition signal circuit. Ignition Signal.

4. CHECK DTC

Perform DTC Confirmation Procedure, (see above)..
OK or NG
OK-INSPECTION END
NG- GO TO 5.

5. CHECK TCM

1.Check TCM input/output signals. Trouble Diagnosis.
2.If NG, re-check TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK-INSPECTION END
NG- Repair or replace damaged parts.