Whenever ECU is replaced, ensure that the CAN bus lines are normal.
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)
Not applicable
DTC SET CONDITIONS
Logic Flow Chart
Check Conditions <DTC P0532>
The heater controller assembly (A/C-ECU) power supply voltage is between 10 and 16 volts.
The battery cooling evaporator temperature is more than 4°C (39°F).
The drive battery temperature minimum value is more than 15°C (59°F).
The intake air temperature is more than 0°C (32°F).
The vehicle speed is more than 1 km/h (0.6 mph).
Judgment Criterion <DTC P0532>
Change the A/C pressure sensor voltage is less than 0.07 volt [-0.02 MPa (-3 psi)] for 3 seconds.
Check Conditions <DTC P0533>
The heater controller assembly (A/C-ECU) power supply voltage is between 10 and 16 volts.
Judgment Criterion <DTC P0533>
Change the A/C pressure sensor voltage is more than 4.92 volts [3.25 MPa (471 psi)] for 3 seconds.
OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 2 . <DTC P0532>
Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 3 . <DTC P0533>
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 2 <DTC P0532>, Pattern 3 <DTC P0533>.
(2) Check if the DTC is set.
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 2 <DTC P0532>, Pattern 3 <DTC P0533>.