DTC Code | DTC Name |
---|---|
P0AE6-225 | Hybrid Battery Precharge Contactor Control Circuit Low |
DESCRIPTION
The SMRs (System Main Relays) are the relays that connect or disconnect the high voltage power system in accordance with commands from the power management control ECU.
There are 3 SMRs and 1 precharge resistor. SMRB, SMRP, SMRG, and the precharge resistor are located in the hybrid battery junction block assembly in the HV battery pack.
To connect to the high voltage power system, the vehicle will first turn on SMRP and SMRB to charge the vehicle through the system main resistor. Then, SMRP will be turned off after SMRG is turned on. To shut off the high voltage power system, SMRB and SMRG are turned off.
DTC No. | INF Code | DTC Detection Condition | Trouble Area |
---|---|---|---|
P0AE6 | 225 | Short to GND in the SMRP circuit |
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WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work Click here.
Tech Tips
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
Note
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work Click here.
Tech Tips
If P0AE6-225 is stored, the vehicle cannot be started.
PROCEDURE
CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)
Disconnect the H1 power management control ECU connector.
*a | Rear view of wire harness connector (to Power Management Control ECU) |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
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Reconnect the H1 power management control ECU connector.
OK |
REPLACE POWER MANAGEMENT CONTROL ECU Click here |
NG |
CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - HYBRID BATTERY JUNCTION BLOCK ASSEMBLY)
CAUTION:
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
Note
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the No. 4 hybrid battery shield panel Click here.
Disconnect the Q6 hybrid battery junction block assembly connector.
Disconnect the H1 power management control ECU connector.
*a | Rear view of wire harness connector (to Power Management Control ECU) |
*b | Rear view of wire harness connector (to Hybrid Battery Junction Block Assembly) |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
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Reconnect the H1 power management control ECU connector.
Reconnect the Q6 hybrid battery junction block assembly connector.
Install the No. 4 hybrid battery shield panel.
OK |
REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY Click here |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |