P2733

DTC P2733: Clutch/Shift Changeover Solenoid 1, spool stuck

CAUTION:
^ If there is any problem in the CAN bus lines, an incorrect diagnostic trouble code may be set. Prior to this diagnosis, diagnose the CAN bus lines.
^ Whenever the ECU is replaced, ensure that the CAN bus lines are normal.

DIAGNOSTIC FUNCTION
TC-SST-ECU checks that the clutch/shift changeover solenoid 1 is normal.

DESCRIPTIONS OF MONITOR METHODS
The clutch/shift changeover solenoid 1 is determined to be seized.

MONITOR EXECUTION
^ Continuous

MONITOR EXECUTION CONDITIONS (OTHER MONITOR AND SENSOR)

Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
^ P2736: Clutch/shift switching solenoid 1 system (Open circuit)
^ P2738: Clutch/shift switching solenoid 1 system (Short to ground)
^ P2739: Clutch/shift switching solenoid 1 system (Short to power supply)
^ P181B: Clutch 1 (Pressure low range out)
^ P181C: Clutch 1 (Pressure high range out)
^ P1859: Disengagement too late with clutch 1

Sensor (The sensor below is determined to be normal)
^ Not applicable

LOGIC FLOW CHARTS (Monitor Sequence)





DTC SET CONDITIONS

Check Conditions
^ Voltage of battery: 8 V or more.
^ Voltage of battery: 16.5 V or less.
^ Engine speed: 500 r/min or more.
^ Time since above engine condition: 400 millisecond or more.
^ Clutch/shift changeover solenoid 1: ON.
^ Clutch/shift changeover solenoid 2: OFF.
^ Clutch cooling flow solenoid: OFF.
^ Clutch/shift pressure solenoid 1: ON.

JUDGMENT CRITERIA
^ Clutch 1 (odd) pressure: 1,400 mbar or more, or clutch 1 pressure sensor (odd) change: 0, and shift fork position sensor 1 and 2 change: 0. (200 millisecond)

OBD-II DRIVE CYCLE PATTERN
The status with the clutch 1 pressure 1,400 mbar or less, or with the clutch 1 pressure sensor (odd) and shift fork position sensor 1 and 2 changed continues for 200 milliseconds.

PROBABLE CAUSES
^ Malfunction of TC-SST-ECU

DIAGNOSTIC PROCEDURE

STEP 1. Scan tool CAN bus diagnostics
Using scan tool MB991958, diagnose the CAN bus lines.

Q: Is the check result normal?
YES: Go to Step 2.
NO: Repair the CAN bus lines. After repairing the CAN bus line, go to Step 2.

STEP 2. Check whether the DTC is reset.

Q: Is DTC No. P2733 set?
YES: Replace the TC-SST assembly.
NO: Intermittent malfunction.