P3245

L110F HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P3245-203: Short in Inverter Circuit
P3245-203 - Short in Inverter Circuit

DESCRIPTION

For a description of the inverter, P0A78.





INSPECTION PROCEDURE

NOTICE:
- DTC P3245-203 is stored after any of DTCs P0A7A-122, 130, 322, 324, 325, 517, 518, 809, 810, and 811 are stored. After troubleshooting and repairing DTC P3245-203, be sure to troubleshoot all the other DTCs.
- The generator cable and hybrid vehicle transmission assembly may be affected depending on the vehicle operating conditions if a short occurs in the inverter with converter assembly. If DTC P3245-203 is output, inspect the generator cable and hybrid vehicle transmission assembly and replace the defective parts.
- After completing the repair, test-drive the vehicle at a speed of approximately 25 mph (40 km/h) for 1 minute and check that DTC P0A92-261 (Hybrid Generator Performance) is not output. If DTC P0A92-261 (Hybrid Generator Performance) is output, replace the hybrid vehicle transmission assembly.

PROCEDURE

1. CHECK HYBRID VEHICLE TRANSMISSION ASSEMBLY (MG1)

CAUTION:
Be sure to wear insulated gloves.

(a) Remove the service plug grip Hybrid Control System.

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) Disconnect the generator cable and motor cable from the inverter with converter assembly.

HINT
For the removal and installation procedures related to the generator cable and motor cable, Components.

(c) Check MG1 for an interphase short using a milliohmmeter.





(1) Using a milliohmmeter, measure the resistance according to the value(s) in the table below.

HINT
If the MG1 temperature is high, the resistance will vary greatly from the specification. Therefore, measure the resistance at least 8 hours after the vehicle is stopped.

Standard resistance:





HINT
- To correct the variation of the measured resistance due to temperature, use the following formula to calculate the resistance at 68° F (20°C).
* R20 = Rt / {1 + 0.00393 X (T - 20)}
- The calculation is based on the following:
* R20: Resistance at 68° F (20°C) (mOhms)
* Rt: Measured resistance (mOhms)
* T: Temperature when the resistance is measured (°C)

(d) Using a megohmmeter set to 500 V, measure the resistance according to the value(s) in the table below.

NOTICE:
Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

Standard resistance:





NG -- CHECK GENERATOR CABLE
OK -- Continue to next step.

2. REPLACE INVERTER WITH CONVERTER ASSEMBLY

(a) Replace the inverter with converter assembly Installation.

NEXT -- CHECK DTC OUTPUT (HV)

3. CHECK GENERATOR CABLE P0A78

NG -- REPLACE GENERATOR CABLE
OK -- Continue to next step.

4. REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY

(a) Replace the hybrid vehicle transmission assembly Components.

NEXT -- Continue to next step.

5. REPLACE INVERTER WITH CONVERTER ASSEMBLY

(a) Replace the inverter with converter assembly Installation.

NEXT -- CHECK DTC OUTPUT (HV)

6. REPLACE GENERATOR CABLE

(a) Replace the generator cable Components.

NEXT -- Continue to next step.

7. REPLACE INVERTER WITH CONVERTER ASSEMBLY

(a) Replace the inverter with converter assembly Installation.

NEXT -- Continue to next step.

8. CHECK DTC OUTPUT (HV)

(a) Check the other DTCs that were output together with DTC P3245-203.





NOTICE:
DTC P3245-203 is stored after any of DTCs P0A7A-122, 130, 322, 324, 325, 517, 518, 809, 810, and 811 are stored. After troubleshooting and repairing DTC P3245-203, be sure to troubleshoot all the other DTCs.

NEXT -- GO TO DTC CHART Hybrid Control System