DTC P0745:00 [FN4A-EL]

id050218818500

DTC P0745:00

Pressure control solenoid malfunction

DETECTION CONDITION

•  The PCM detects that output voltage to the pressure control solenoid is stuck at 0 V or B+ when the solenoid valve operates according to PCM calculation.

Diagnostic support note:

•  This is a continuous monitor (CCM).

•  The MIL does not illuminate.

•  The HOLD indicator light flashes if the PCM detects the above malfunction condition during the first drive cycle.

•  PENDING CODE is not available.

•  FREEZE FRAME DATA is not available.

•  The DTC is stored in the PCM memory.

POSSIBLE CAUSE

•  Pressure control solenoid malfunction

•  Connector or terminal malfunction

•  Open circuit in wiring harness between pressure control solenoid terminal A and PCM terminal 1P

•  Short to power supply in wiring harness between pressure control solenoid terminal A and PCM terminal 1P

•  Short to GND in wiring harness between pressure control solenoid terminal A and PCM terminal 1P

•  Open circuit in wiring harness between pressure control solenoid terminal B and PCM terminal 1T

•  Short to power supply in wiring harness between pressure control solenoid terminal B and PCM terminal 1T

•  Short to GND in wiring harness between pressure control solenoid terminal B and PCM terminal 1T

•  PCM malfunction

DTC P0745:00	Pressure control solenoid malfunction
DETECTION CONDITION	• The PCM detects that output voltage to the pressure control solenoid is stuck at 0 V or B+ when the solenoid valve operates according to PCM calculation. Diagnostic support note: • This is a continuous monitor (CCM). • The MIL does not illuminate. • The HOLD indicator light flashes if the PCM detects the above malfunction condition during the first drive cycle. • PENDING CODE is not available. • FREEZE FRAME DATA is not available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE	• Pressure control solenoid malfunction • Connector or terminal malfunction • Open circuit in wiring harness between pressure control solenoid terminal A and PCM terminal 1P • Short to power supply in wiring harness between pressure control solenoid terminal A and PCM terminal 1P • Short to GND in wiring harness between pressure control solenoid terminal A and PCM terminal 1P • Open circuit in wiring harness between pressure control solenoid terminal B and PCM terminal 1T • Short to power supply in wiring harness between pressure control solenoid terminal B and PCM terminal 1T • Short to GND in wiring harness between pressure control solenoid terminal B and PCM terminal 1T • PCM malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related repair information available?	Yes	Perform repair or diagnosis according to the available repair information. • If the vehicle is not repaired, go to the next step.
1		No	Go to the next step.
2	INSPECT COUPLER COMPONENT CONNECTOR FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect the coupler component connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion) • Is there any malfunction?	Yes	Repair or replace the terminal, then go to Step 8.
2		No	Go to the next step.
3	INSPECT PRESSURE CONTROL SOLENOID CIRCUIT FOR SHORT TO POWER SUPPLY • Turn the ignition switch off. • Measure the voltage between the following circuits: ― Coupler component terminal D (wiring harness-side) and body GND ― Coupler component terminal I (wiring harness-side) and body GND • Is the voltage B+?	Yes	Repair or replace the wiring harness for a possible short to power supply, then go to Step 8.
3		No	Go to the next step.
4	INSPECT PRESSURE CONTROL SOLENOID CIRCUIT FOR SHORT TO GND • Turn the ignition switch off. • Inspect for continuity between the following circuits: ― Coupler component terminal D (wiring harness-side) and body GND ― Coupler component terminal I (wiring harness-side) and body GND • Is there continuity?	Yes	Repair or replace the wiring harness for a possible short to GND, then go to Step 8.
4		No	Go to the next step.
5	INSPECT PRESSURE CONTROL SOLENOID • Inspect pressure control solenoid. (See SOLENOID VALVE INSPECTION [FN4A-EL].) • Is there any malfunction?	Yes	Replace the pressure control solenoid, then go to Step 8. (See SOLENOID VALVE REMOVAL/INSTALLATION [FN4A-EL].)
5		No	Go to the next step.
6	INSPECT PCM CONNECTOR FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion) • Is there any malfunction?	Yes	Repair or replace the terminal, then go to Step 8.
6		No	Go to the next step.
7	INSPECT PRESSURE CONTROL SOLENOID CIRCUIT FOR OPEN CIRCUIT • Turn the ignition switch off. • Inspect for continuity between the following circuits: ― Coupler component terminal D (wiring harness-side) and PCM terminal 1P (wiring harness-side) ― Coupler component terminal I (wiring harness-side) and PCM terminal 1T (wiring harness-side) • Is there continuity?	Yes	Repair or replace the wiring harness for a possible open circuit, then go to the next step.
7		No	Go to the next step.
8	VERIFY TROUBLESHOOTING OF DTC P0745:00 COMPLETED • Make sure to reconnect all the disconnected connectors. • Clear the DTC from the memory using the M-MDS. • Perform the following procedure to ensure that the DTC has been resolved: ― Warm up the engine. ― Shift the selector lever to D range. ― Make sure that the gears shift smoothly from 1GR to 4GR. ― Make sure that TCC operates smoothly. • Is the same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].)
8		No	Go to the next step.
9	VERIFY AFTER REPAIR PROCEDURE • Perform the “After Repair Procedure”. (See AFTER REPAIR PROCEDURE [FN4A-EL].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [FN4A-EL].)
9		No	DTC troubleshooting completed.