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DTC P1F0C: BAT.Cooling EVAP/PTC heater TEMP
 
 
cautionWhenever ECU is replaced, ensure that the CAN bus lines are normal.
 
 
DESCRIPTIONS OF MONITOR METHODS
  • Uniform temperature in the driving battery is achieved after the driving battery cooling fan has operated for an adequate amount of time.
  • The monitor is enabled during the following condition.
    • The driving battery cooling fan operates for 180 seconds or more.
 
 
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)
  • Not applicable
Sensor (The sensor below is determined to be normal)
  • Driving battery ambient temperature sensor
 
 
DTC SET CONDITIONS
Logic Flow Chart
Check Conditions
  • The heater controller assembly (A/C-ECU) power supply voltage is between 10 and 16 volts.
  • The drive battery cooling fan drive status is on.
  • Time after above condition satisfied is more than 180 seconds.
  • The drive battery cooling compressor drive status is on.
Judgment Criterion
  • The difference between the battery cooling evaporator temperature value and the driving battery ambient temperature value changes to 15°C (59°F) or more within 240 seconds.
Check Conditions
  • The heater controller assembly (A/C-ECU) power supply voltage is between 10 and 16 volts.
  • The drive battery cooling fan drive status is on.
  • Time after above condition satisfied is more than 180 seconds.
  • The drive battery cooling compressor drive status is off.
Judgment Criterion
  • The difference between the battery cooling evaporator temperature value and the driving battery ambient temperature value changes to 26°C (79°F) or more within 240 seconds.
 
 
OBD-II DRIVE CYCLE PATTERN
  • Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 4 .
 
 
PROBABLE CAUSES
  • Malfunction of the CAN bus
  • Malfunction of the heater controller assembly (A/C-ECU)
  • Malfunction of the PHEV-ECU.
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), check whether the other DTC is set.
Scan tool (M.U.T.-IIISE) other system DTC [heater controller assembly (A/C-ECU)] (Refer to ).
Is the DTC set?
Troubleshoot for the relevant DTC. Then go to Step 3.
Go to Step 2.
 
STEP 2. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 4 .
(2) Check the DTC.
Is the DTC set?
Replace the PHEV-ECU (Refer to GROUP 54Da - PHEV-ECU ). Then go to Step 3.
The procedure is complete.
 
STEP 3. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 4 .
(2) Check the DTC.
Is the DTC set?
Retry the troubleshooting.
The procedure is complete.