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DTC No. P2872-00 Clutch Stuck ON
 
 
 
 
MONITOR EXECUTION
Continuous
 
 
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)
Other Monitor (There is no temporary DTC set in memory for the item monitored below)
  • Not applicable
Sensor (The sensor below is determined to be normal)
  • Not applicable
 
 
DTC SET CONDITIONS
Logic Flow Chart
 
 
Check Condition A
  • The drive mode is in EV mode for 1 second or more.
  • Front motor speed is 750 rpm or more.
  • The amount of change in actual revolution speed difference*1 is 10 rpm/sec or less.
  • The PHEV-ECU power supply voltage is 9 volts or more.
  • EV power source relay drive signal is ON.
note
  • *1: The summation of the actual revolution speed change (absolute value) from previous 0.03 sec segments
Check Condition B
  • The drive mode is in series mode, and the the estimated revolution speed difference*2 is 1,000 rpm or more for 1 second or more.
  • The front motor speed is 750 rpm or more.
  • The amount of change in actual revolution speed difference*1 is 10 rpm/sec or less.
  • The PHEV-ECU power supply voltage is 9 V or more.
  • EV power source relay drive signal is ON.
note
  • *1: The summation of the actual revolution speed change (absolute value) from previous 0.03 sec segments
  • *2: Estimated revolution speed difference: Target generator speed - Estimated Generator Speed if the clutch system stuck ON
Judgment Criterion
  • The difference between the input revolution speed and output revolution speed is 8 rpm or less for 3.5 seconds or more.
 
 
OBD-II DRIVE CYCLE PATTERN
 
 
TROUBLESHOOTING HINTS
  • Malfunction of the front transaxle (clutch stuck)
  • Malfunction of the valve body assembly (foreign material stuck in proportional valve)
  • Malfunction of the PHEV-ECU
 
 
DIAGNOSIS
Required Special Tools:
  • MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite main harness A
  • MB992747: V.C.I.-Lite USB cable short
  • MB992748: V.C.I.-Lite USB cable long
1.Check whether the clutch is stuck.
(1) Raise the vehicle.
(2) Rotate the left and right front wheels by hands, and check that the crank pulley does not rotate.
Is the check result normal?
Replace the front transaxle assembly (Refer to Transaxle - Front Transaxle REMOVAL AND INSTALLATION). Then,
 
2.Hydraulic pressure test
Perform the hydraulic pressure test (Refer to Transaxle - Hydraulic Pressure Test HYDRAULIC PRESSURE TEST).
Is the check result normal?
Replace the valve body assembly (Refer to Transaxle Overhaul - Front Transaxle DISASSEMBLY AND ASSEMBLY). Then,
 
3.Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to OBD-II Drive Cycle OBD-II DRIVE CYCLE.
(2) Check the DTC.
Is the DTC set?
Replace the PHEV-ECU (Refer to PHEV-ECU REMOVAL AND INSTALLATION). Then,
The trouble can be an intermittent malfunction (Refer to General Information - How to Use Troubleshooting/Inspection Service Points, How to Cope with Intermittent Malfunctions HOW TO COPE WITH INTERMITTENT MALFUNCTIONS).
 
4.Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to OBD-II Drive Cycle OBD-II DRIVE CYCLE.
(2) Check the DTC.
Is the DTC set?
Retry the troubleshooting.
The procedure is complete.