DESCRIPTION
The SMRs (System Main Relays) are the relays that connect or disconnect the high-voltage system in accordance with commands from the hybrid vehicle control ECU.
There are 3 SMRs and 1 system main resistor. SMRB, SMRP, SMRG and the system main resistor are located in the HV battery junction block assembly.
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. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
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P0AE411 | Hybrid/EV Battery Precharge Contactor Circuit Short to Ground | Short to ground in the SMRP circuit: Primary circuit of SMRP is malfunctioning. (2 trip detection logic) |
| Does not come on | Master Warning Light: Comes on |
DTC No. | Data List |
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P0AE411 |
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CONFIRMATION DRIVING PATTERN
HINT:
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
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HINT:
WIRING DIAGRAM
Refer to the wiring diagram for the HV Battery High-voltage Line Circuit.
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CAUTION / NOTICE / HINT
CAUTION:
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HINT:
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
*a | Without waiting for 10 minutes |
NOTICE:
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.
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HINT:
If DTC P0AE411 is output, the power switch cannot be turned on (READY).
PROCEDURE
1. | CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - BODY GROUND) |
(a) Disconnect the G59 hybrid vehicle control ECU connector.
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
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(c) Reconnect the G59 hybrid vehicle control ECU connector.
OK | REPLACE HYBRID VEHICLE CONTROL ECU |
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2. | CHECK CONNECTOR CONNECTION CONDITION (FLOOR WIRE CONNECTOR) |
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Result | Proceed to |
---|---|
OK | A |
NG (The connector is not connected securely.) | B |
NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) | C |
B | CONNECT SECURELY |
C | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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3. | CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - HV BATTERY JUNCTION BLOCK ASSEMBLY) |
CAUTION:
Be sure to wear insulated gloves.
(a) Check that the service plug grip is not installed.
NOTICE:
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.
(b) Remove the No. 1 HV battery cover panel RH.
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(c) Disconnect the N22 HV battery junction block assembly connector. | |
(d) Disconnect the G59 hybrid vehicle control ECU connector.
(e) Measure the resistance according to the value(s) in the table below. Standard Resistance:
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(f) Reconnect the G59 hybrid vehicle control ECU connector.
(g) Reconnect the N22 HV battery junction block assembly connector.
(h) Install the No. 1 HV battery cover panel RH.
OK | REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |