P0880

DTC P0880 TCM POWER SIGNAL ERROR

COMPONENT LOCATION





GENERAL DESCRIPTION
The TCM monitors supplying voltage to "SOLENOID VALVE".
The gear position is fixed at 3rd gear when input value is higher or lower than specification.

DTC DESCRIPTION
The TCM set this code If an input voltage is higher or lower than specification.

DTC DETECTING CONDITION





SIGNAL WAVEFORM





MONITOR SCANTOOL DATA
1. Connect scan tool to data link connector (DLC).
2. Ignition "ON" & Engine "OFF".
3. Monitor the "BATTERY VOLTAGE" parameter on the scan tool.





4. Does "BATTERY VOLTAGE" follow the reference data?

YES

> Fault is intermittent caused by poor contact in the sensors and/or TCM (PCM)'s connector or was repaired and TCM(PCM) memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure.

No

> Go to "Terminal & connector inspection" procedure.

TERMINAL & CONNECTOR INSPECTION
1. Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?

YES

> Repair as necessary and go to "Verification of vehicle repair" procedure.

No

> Go to "Power supply circuit inspection" procedure.

POWER SUPPLY CIRCUIT INSPECTION
1. Ignition "ON" & Engine "OFF".
2. Disconnect the PCM/TCM connector.
3. Measure voltage between terminal No"49" of TCM harness connector and chassis ground and then terminal No"50" of the TCM harness connector and chassis ground.





4. Is voltage within specifications?

YES

> Fault is intermittent caused by poor contact in the sensor's and/or PCM/TCM's connector or was repaired and PCM/TCM memory was not cleared. And go to Verification of Vehicle Repair procedure.

No

> Substitute with a known-good PCM/TCM and check for proper operation. If the problem is corrected, replace PCM/TCM as necessary and then go to "Verification of Vehicle Repair" procedure.

VERIFICATION OF VEHICLE REPAIR
After a repair, it is essential to verify that the fault has been corrected.
1. Connect scan tool and select "Diagnostic Trouble Codes (DTCs)" mode.
2. Using a scan tool, Clear DTC.
3. Operate the vehicle within DTC Enable conditions in General information.
4. Are any DTCs present?

YES

> Go to the applicable troubleshooting procedure.

No

> System performing to specification at this time.