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DTC No. U1E00-87 Lost Communication With HVAC Control Module 2
 
 
 
 
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
  • The PHEV-ECU power supply voltage is between 10.0 volts and 16.0 volts for 5 seconds or more.
  • The power supply mode of the electric motor switch is ON
Judgment Criterion
  • The communication status between the PHEV-ECU and PHEV A/C amplifier is in Fail condition for 2.5 seconds or more.
 
 
OBD-II DRIVE CYCLE PATTERN
 
 
TROUBLESHOOTING HINTS
  • Malfunction of the CAN bus line (EV CAN)
  • Malfunction of the PHEV A/C amplifier power supply circuit
  • Malfunction of the PHEV A/C amplifier
  • Malfunction of the PHEV-ECU
 
 
DIAGNOSIS
1.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?
Diagnose the CAN bus line (Refer to CAN Fundamental - Trouble Diagnosis Flow Chart Trouble Diagnosis Flow Chart).
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).