P31E0
Description
The high voltage connector connection detecting circuit monitors the connection status of the high voltage connector.
The high voltage connector connection detecting circuit is composed of 2 circuits: the input side and output side. When the high voltage connector is connected, the input side and outputs side are connected via the contacts inside the high voltage connector, forming the circuit.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1. PRECONDITIONING
- Turn power switch OFF and wait at least 20 seconds.
- Make sure that 12V battery voltage is 11 V or more.
- GO TO 2.
2. PERFORM DTC CONFIRMATION PROCEDURE-I
With CONSULT
1.Turn power switch ON at least 5 seconds.
2.Check self-diagnostic result.
Is DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- GO TO 3.
3. PERFORM DTC CONFIRMATION PROCEDURE-II
With CONSULT
1.Set the vehicle to READY at least 10 seconds.
2.Check self-diagnostic result.
Is DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END
Diagnosis Procedure
WARNING:
- Because hybrid vehicles and electric vehicles contain a high voltage battery, there is the risk of electric shock, electric leakage, or similar accidents if the high voltage component and vehicle are handled incorrectly. Be sure to follow the correct work procedures when performing inspection and maintenance.
- Be sure to remove the service plug in order to disconnect the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.
- To prevent the removed service plug from being connected by mistake during the procedure, always carry it in your pocket or put it in the tool box.
- Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses before beginning work on the high voltage system.
- Clearly identify the persons responsible for high voltage work and ensure that other persons do not touch the vehicle. When not working, cover high voltage parts with an insulating cover sheet or similar item to prevent other persons from contacting them.
- Refer to "High Voltage Precautions" High Voltage Precautions.
CAUTION:
- There is the possibility of a malfunction occurring if the vehicle is changed to READY status while the service plug is removed. Therefore do not change the vehicle to READY status unless instructed to do so in the Service Manual.
- Erase DTC after the work is completed.
1. PRECONDITIONING
WARNING:
Disconnect high voltage. Refer to "How to Disconnect High Voltage" Service and Repair.
Check voltage in high voltage circuit. (Check that condenser are discharged.)
1.Lift up the vehicle and remove the Li-ion battery under covers. Refer to "Removal and Installation" Service and Repair (without Li-ion battery heater models), "Removal and Installation" Service and Repair (with Li-ion battery heater models).
2.Disconnect high voltage harness connector from front side of Li-ion battery. Refer to "Removal and Installation" Service and Repair (without Li-ion battery heater models), "Removal and Installation" Service and Repair (with Li-ion battery heater models).
3.Measure voltage between high voltage harness connector terminals.
DANGER:
Touching high voltage components without using the appropriate protective equipment will cause electrocution.
Standard: 5 V or less
CAUTION:
For voltage measurements, use a tester which can measure to 500 V or higher.
- GO TO 2.
2. CHECK HIGH VOLTAGE HARNESS CONNECTOR INSTALLATION CONDITION
Check high voltage harness connectors installation condition visually and tactually.
CAUTION:
When reconnecting the high voltage harness connector, insert it slowly and directly.
Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace error-detected parts.
3. CHECK FUSE
Pull out #73 fuse and check that the fuse is not fusing.
Is the inspection result normal?
YES-1 (With quick charge port)-GO TO 4.
YES-2 (Without quick charge port)-GO TO 8.
NO- Replace the fuse after repairing the applicable circuit.
4. CHECK CONNECTION DETECTING CIRCUIT POWER SUPPLY-I
1.Insert the fuse which pulled out.
2.Disconnect quick charge port harness connector (+) side.
3.Reconnect 12V battery cable.
4.Turn power switch ON.
5.Check the voltage between quick charge port and ground.
Is the inspection result normal?
YES- GO TO 6.
NO- GO TO 5.
5. CHECK CONNECTION DETECTING CIRCUIT POWER SUPPLY CIRCUIT-I
1.Turn power switch OFF.
2.Remove M/C relay.
3.Check the continuity between quick charge port harness connector and M/C relay harness connector terminal.
4.Also check harness for short to ground.
Is the inspection result normal?
YES- Check M/C relay routing circuit. Refer to "Diagnosis Procedure" M/C Relay.
NO- Repair or replace error-detected parts.
6. CHECK CONNECTION DETECTING CIRCUIT POWER SUPPLY CIRCUIT-II
1.Disconnect quick charge port harness connector (-) side.
2.Check the continuity between quick charge port harness connectors.
3.Also check harness for short to ground.
Is the inspection result normal?
YES- GO TO 7.
NO- Repair or replace error-detected parts.
7. CHECK CONNECTION DETECTING CIRCUIT POWER SUPPLY CIRCUIT-III
1.Disconnect DC/DC junction box harness connector.
2.Check the continuity between quick charge port harness connector and DC/DC junction box harness connector.
3.Also check harness for short to ground.
Is the inspection result normal?
YES- GO TO 10.
NO- Repair or replace error-detected parts.
8. CHECK CONNECTION DETECTING CIRCUIT POWER SUPPLY-II
1.Insert the fuse which pulled out.
2.Disconnect DC/DC junction box harness connector.
3.Reconnect 12V battery cable.
4.Turn power switch ON.
5.Check the voltage between DC/DC junction box and ground.
Is the inspection result normal?
YES- GO TO 10.
NO- GO TO 9.
9. CHECK CONNECTION DETECTING CIRCUIT POWER SUPPLY CIRCUIT-IV
1.Turn power switch OFF.
2.Remove M/C relay.
3.Check the continuity between DC/DC harness connector and M/C relay harness connector terminal.
4.Also check harness for short to ground.
Is the inspection result normal?
YES- Check M/C relay routing circuit. Refer to "Diagnosis Procedure" M/C Relay.
NO- Repair or replace error-detected parts.
10. CHECK CONNECTION DETECTION CIRCUIT-V
1.Disconnect VCM harness connector.
2.Check the continuity between VCM harness connector and DC/DC junction box harness connector.
3.Also check harness for short to ground.
Is the inspection result normal?
YES- GO TO 11.
NO- Repair or replace error-detected parts.
11. CHECK HIGH VOLTAGE HARNESS CONNECTOR
1.Remove DC/DC junction box. Refer to "Removal and Installation" Removal And Installation.
2.Check the continuity between following connector terminals.
Is the inspection result normal?
YES- Replace DC/DC junction box. Refer to "Removal and Installation" Removal And Installation.
NO- Replace malfunctioning high voltage harness.