P0745
DTC P0745 PRESSURE CONTROL SOLENOID VALVE ACOMPONENT LOCATION:
GENERAL DESCRIPTION
The Pressure Control Solenoid Valve A (PCSV A) converts the electric signals, which are controlled by the PCM, into hydraulic pressure. The PCSV A controls the hydraulic pressure, which is applied to the Clutches and Brakes, to reduce the shift shock during shifting.
DTC DESCRIPTION
The PCM checks the Pressure Control Solenoid Valve signals by monitoring the feedback signals from the solenoid valve drive circuit. If an unexpected signal is monitored, (For example, high voltage is detected when low voltage is expected, or low voltage is detected when high voltage is expected) the PCM judges that the PCSV A drive circuit is malfunctioning and sets this code.
DTC DETECTING CONDITION:
CIRCUIT DIAGRAM FOR AUTOMATIC TRANSAXLE:
SIGNAL WAVEFORM:
MONITOR SCANTOOL DATA
1. Connect scantool to data link connector (DLC).
2. Engine "ON".
3. Monitor the "PCSV-A" parameter on the scantool.
4. Select "N -> D RANGE".
5. Check "PCSV-A" parameter value changes while driving.
6. Does "PCSV-A DUTY" follow the reference data?
YES
> Fault is intermittent caused by poor contact in the sensor's and/or PCM's connector or was repaired and 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 then go to "Verification of vehicle repair" procedure.
NO
> Go to "Signal circuit inspection" procedure.
SIGNAL CIRCUIT INSPECTION
1. Disconnect "A/T SOLENOID VALVE" connector.
2. IGNITION "ON", ENGINE "OFF".
3. Measure voltage between terminal "5" of the sensor harness connector and chassis ground.
Specification: approx. 6V
4. Is voltage within specifications?
YES
> Go to "Component inspection" procedure.
NO
> Check for open or short in harness. Repair as necessary and Go to "Verification of vehicle repair" procedure.
> If signal circuit in harness is OK, Go to "Check PCM" of the "Component inspection" procedure
COMPONENT INSPECTION
1. CHECK SOLENOID VALVE
1) Ignition "OFF".
2) Disconnect A/T SOLENOID VALVE connector.
3) Measure resistance between terminal 5 and chassis ground.
Specification: Approximately 2.7 - 3.4 Ohms [20°C (68°F)]
4) Is resistance within specification?
YES
> Go to CHECK PCM as below.
NO
> Replace TCC SOLENOID VALVE as necessary and go to "Verification of vehicle repair" procedure.
2. CHECK PCM
1) Connect scantool to data link connector (DLC).
2) Ignition "ON" & Engine "OFF".
3) Select A/T, solenoid valve actuator test and operate actuator test.
4) Can you hear operating sound for "TCC SOLENOID VALVE" actuator testing function?
YES
> Go to Verification of vehicle repair procedure.
NO
> Replace PCM as necessary and Go to Verification of vehicle repair procedure
ACTUATOR TEST CONDITION
1. IG SWITCH ON
2. TRANSAXLE RANGE SWITCH is normal
3. P RANGE
4. Vehicle speed 0 mph (0 km/h)
5. Throttle position sensor < 1 V
6. IDLE SWITCH ON
7. ENGINE RPM 0
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 scantool, 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.