P0745

DTC P0745 PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE)
Description





- The pressure control solenoid valve A is normally high, 3-port linear pressure control solenoid.
- The pressure control solenoid valve A regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the TCM.

On Board Diagnosis Logic
- This is an OBD-II self-diagnostic item.
- Diagnostic trouble code "PC SOL A (L/PRESS)" with CONSULT-II or P0745 without CONSULT-II is detected under the conditions.
- When normal voltage is not applied to solenoid due to open, short, and so on.
- When TCM detects as irregular by comparing target value with monitor value.

Possible Cause
- Harness or connectors (The solenoid circuit is open or shorted.)
- Pressure control solenoid valve A

DTC Confirmation Procedure

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, perform the procedure to confirm the malfunction is eliminated.

WITH CONSULT-II





1. Turn ignition switch "ON". (Do not start engine.)
2. Select "A/T" with "DATA MONITOR" mode in CONSULT-II.
3. Start engine.
4. Run engine for at least 13 consecutive seconds at idle speed.
5. If DTC is detected, go to AT-528, "Diagnostic Procedure".

WITH GST
Follow the procedure "With CONSULT-II".

Wiring Diagram-AT-PC/A

AT-PC/A-01:

AT-PC/A-01

Diagnostic Procedure
1. CHECK PRESSURE CONTROL SOLENOID VALVE A SIGNAL

With CONSULT-II
1. After warming up the engine and transaxle, turn ignition switch "OFF".
2. Turn ignition switch "ON". (Do not start engine.)
3. Select "DATA MONITOR" mode for "A/T" with CONSULT-II.








4. Read out the value of "PC SOL A OUT" and "PC SOL A MON".

Without CONSULT-II
1. Start the engine.








2. Check pulse between TCM connector terminals 35 and 40.
OK or NG
OK >> GO TO 7.
NG >> GO TO 2.

2. CHECK PRESSURE CONTROL SOLENOID VALVE A CIRCUIT
1. Turn ignition switch "OFF".








2. Disconnect the TCM connector.
3. Check resistance between TCM connector terminals 35 and 40.
OK or NG
OK >> GO TO 7.
NG >> GO TO 3.

3. CHECK TERMINAL CORD ASSEMBLY WITH PRESSURE CONTROL SOLENOID VALVE A
1. Turn ignition switch "OFF".
2. Disconnect terminal cord assembly harness connector.








3. Check resistance between terminals 3 and 6.
OK or NG
OK >> GO TO 4.
NG >> GO TO 5.

4. CHECK HARNESS BETWEEN TCM AND TERMINAL CORD ASSEMBLY
Check the following.
- Open or short-circuit in the harness between TCM and terminal cord assembly.
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.

5. CHECK PRESSURE CONTROL SOLENOID VALVE A
1. Remove side cover. Refer to "Side cover".
2. Disconnect pressure control solenoid valve A harness connector.








3. Check resistance between terminals 1 and 2.
OK or NG
OK >> GO TO 6.
NG >> Replace the control valve assembly. Refer to "Control Valve Assembly".

6. CHECK HARNESS BETWEEN TERMINAL CORD ASSEMBLY AND PRESSURE CONTROL SOLENOID VALVE A
Check the following.
- Open or short-circuit in the harness between terminal cord assembly and pressure control solenoid valve A.
OK or NG
OK >> GO TO 7.
NG >> Repair or replace transmission wire. Refer to "Terminal Cord Assembly".

7. CHECK DTC
Perform "DTC Confirmation Procedure". Refer to "DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> GO TO 8.

8. CHECK TCM
1. Check TCM input/output signal. Refer to "TCM Input/Output Signal Reference Values".
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.

Component Inspection
PRESSURE CONTROL SOLENOID VALVE A
1. Remove side cover. Refer to "Side cover".
2. Disconnect pressure control solenoid valve A harness connector.








3. Check resistance between terminals 1 and 2.
4. If NG, replace the control valve assembly. Refer to "Control Valve Assembly".