P0725
P0725 ENGINE SPEED SIGNALDescription
The engine speed signal is transmitted from the ECM to the TCM with CAN communication line.
DTC Logic
P0725:
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. Then wait at least 10 seconds before performing the next test.
1. CHECK DTC DETECTION
With CONSULT-III
1. Start the engine.
2. Select "Data Monitor" mode for "TRANSMISSION".
3. Drive vehicle and maintain the following conditions for at least 10 consecutive seconds.
VHCL/S SE-A/T: 10 km/h (6 MPH) or more
ACCELE POSI: More than 1.0/8
SLCT LVR POSI: "D" position:
With GST
Follow the procedure "With CONSULT-III".
Is "P0725 ENGINE SPEED SIG" detected?
YES >> Go to "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-38, "Intermittent Incident". Service Information For Electrical Incident
Diagnosis Procedure
1. CHECK DTC OF ECM
With CONSULT-III
1. Turn ignition switch ON.
2. Select "Self Diagnostic Results" mode for "ENGINE".
Is any DTC other than "P0725 ENGINE SPEED SIG" detected?
YES >> Check DTC detected item. Refer to EC-113, "CONSULT-III Function". CONSULT-III Function
NO >> GO TO 2.
2. CHECK DTC OF TCM
With CONSULT-III
Select "Self Diagnostic Results" mode for "TRANSMISSION".
Is any DTC other than "P0725 ENGINE SPEED SIG" detected?
YES >> Check DTC detected item. Refer to TM-40, "CONSULT-III Function (TRANSMISSION)". Consult-III Function (Transmission)
NO >> GO TO 3.
3. CHECK THE IGNITION SIGNAL CIRCUIT
With CONSULT-III
1. Start the engine.
2. Select "Data Monitor" mode for "TRANSMISSION".
3. Check for engine speed change corresponding to "ACCELE POSI" while monitoring "ENGINE SPEED".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Check ignition signal circuit. Refer to EC-458, "Description". Ignition Signal
4. CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to TM-89, "Diagnosis Procedure". Main Power Supply and Ground Circuit
Is the inspection result normal?
YES >> Replace the control valve with TCM.
NO >> Repair or replace damaged parts.