Generator Resolver Circuit

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION .

NOTE:

When the faulty phenomenon is not reproduced, perform a driving test on a road where vehicle vibration tends to occur so that the phenomenon may occur.
When the resolver has a malfunction, the vehicle may not be able to drive smoothly.
When it is difficult to check the connector for connecting condition, terminal deformation poor crimping, reconnect the connector after disconnecting once, and read DTCs again to check reproduction of the condition.
It may be poor connection of the connector if the diagnostic condition is not reproduced. However, the diagnostic detection value may temporarily be outside the threshold due to "vibrations", "temperature change due to time passage", etc. because of the connector inspection procedure. Therefore, be sure to perform the following inspection to check that there is no abnormality in other areas.

Wiring diagram:

Hybrid system Ref. to WIRING SYSTEM (CROSSTREK MODEL (HEV))>HYBRID ELECTRIC VEHICLE SYSTEM>WIRING DIAGRAM .

Courtesy of SUBARU OF AMERICA, INC.

CHECK Wire harness AND CONNECTOR (Inverter with converter assembly - Generator resolver) (SHORT TO POWER SUPPLY) .
CAUTION: Make sure to wear insulated gloves and protective goggles during the work.
1. Check that the Service plug is disconnected. Ref. to HYBRID ELECTRIC VEHICLE>SERVICE PLUG .
2. Disconnect Inverter with converter assembly connector (HV24). Ref. to HYBRID ELECTRIC VEHICLE>INVERTER AND CONVERTER ASSEMBLY .
3. Connect the Battery (12V) ground terminal. Ref. to REPAIR CONTENTS>REPAIR CONTENTS>NOTE>BATTERY .
4. Turn to IG ON.
5. Using a tester, measure the voltage between Inverter with converter assembly connector and chassis ground.
  Connector and terminal
  
  (HV24) No. 2 (+) - Chassis ground (-):
  
  (HV24) No. 8 (+) - Chassis ground (-):
  
  (HV24) No. 1 (+) - Chassis ground (-):
  
  (HV24) No. 5 (+) - Chassis ground (-):
  
  (HV24) No. 11 (+) - Chassis ground (-):
  
  (HV24) No. 7 (+) - Chassis ground (-):
  
  Is the voltage less than 1 V?
  
  Yes:
  
  Go to 2.
  
  No:
  
  Repair or replace the Wire harness between Inverter with converter assembly connector and Generator resolver connector.
CHECK Generator resolver .
CAUTION: Make sure to wear insulated gloves and protective goggles during the work.
1. Turn to IG OFF.
2. Disconnect the ground terminal of Battery (12V). Ref. to REPAIR CONTENTS>REPAIR CONTENTS>NOTE>BATTERY .
3. Using a tester, measure the resistance between Inverter with converter assembly connector terminals.
  NOTE: To correct a change of the resistance value due to temperature, calculate the resistance value at 20°C (68°F) by applying the following formula:
  R20 = Rt ÷ (1 + 0.00393 x (T - 20))
  R20: Resistance value (mΩ) at 20°C (68°F)
  Rt: Measured resistance value (mΩ)
  T: Temperature (°C (°F)) at measuring the resistance
  
  Connector and terminal
  
  (HV24) No. 2 - (HV24) No. 8:
  
  (HV24) No. 1 - (HV24) No. 5:
  
  (HV24) No. 11 - (HV24) No. 7:
  
  Is the resistance as follows?
  
  (HV24) No. 2 - (HV24) No. 8: 8.9 - 14.9 Ω
  
  (HV24) No. 1 - (HV24) No. 5: 22.6 - 34.5 Ω
  
  (HV24) No. 11 - (HV24) No. 7: 25.5 - 37.4 Ω
  
  Yes:
  
  Go to 3.
  
  No:
  
  Go to 4.
CHECK Generator resolver (SHORT TO GROUND OR LINE-TO-LINE SHORT) .
CAUTION: Make sure to wear insulated gloves and protective goggles during the work.

Using a tester, measure the resistance between terminals in Inverter with converter assembly connector, and between Inverter with converter assembly connector and chassis ground.

Connector and terminal

(HV24) No. 2 - (HV24) No. 1 - 13:

(HV24) No. 2 - Chassis ground:

(HV24) No. 1 - (HV24) No. 1 - 13:

(HV24) No. 1 - Chassis ground:

(HV24) No. 11 - (HV24) No. 1 - 13:

(HV24) No. 11 - Chassis ground:

Is the resistance 1 MΩ or more?

Yes:

GENERATOR RESOLVER CIRCUIT is normal.

No:

Go to 4.
CHECK CONNECTING CONDITION OF CONNECTOR (RESOLVER CONNECTOR) .
Check the connecting condition of the resolver connector (T45), the relevant terminals for contact pressure, deformation and intrusion of water and foreign matter.

Is there looseness at the connector connection, or any poor contact, deformation or intrusion of water or foreign matters at the relevant terminals?

Yes:

Connect the connector securely. Or repair the poor contact of connector.

No:

Go to 5.
CHECK Wire harness AND CONNECTOR (Inverter with converter assembly - Generator resolver) (OPEN CIRCUIT) .
CAUTION: Make sure to wear insulated gloves and protective goggles during the work.
1. Disconnect the resolver connector (T45).
2. Using a tester, measure the resistance between Inverter with converter assembly connector and Generator resolver connector.
  Connector and terminal
  
  (HV24) No. 2 - (T45) No. 1:
  
  (HV24) No. 8 - (T45) No. 5:
  
  (HV24) No. 11 - (T45) No. 3:
  
  (HV24) No. 7 - (T45) No. 7:
  
  (HV24) No. 5 - (T45) No. 6:
  
  (HV24) No. 1 - (T45) No. 2:
  
  Is the resistance less than 1 Ω?
  
  Yes:
  
  Go to 6.
  
  No:
  
  Repair or replace the Wire harness between Inverter with converter assembly connector and Generator resolver connector.
CHECK Wire harness AND CONNECTOR (Inverter with converter assembly - Generator resolver) (SHORT TO GROUND OR LINE-TO-LINE SHORT) .
CAUTION: Make sure to wear insulated gloves and protective goggles during the work.

Using a tester, measure the resistance between terminals in Inverter with converter assembly, and between Inverter with converter assembly connector and chassis ground.

Connector and terminal

(HV24) No. 2 - (HV24) No. 1 - 13:

(HV24) No. 2 - Chassis ground:

(HV24) No. 8 - (HV24) No. 1 - 13:

(HV24) No. 8 - Chassis ground:

(HV24) No. 1 - (HV24) No. 1 - 13:

(HV24) No. 1 - Chassis ground:

(HV24) No. 5 - (HV24) No. 1 - 13:

(HV24) No. 5 - Chassis ground:

(HV24) No. 11 - (HV24) No. 1 - 13:

(HV24) No. 11 - Chassis ground:

(HV24) No. 7 - (HV24) No. 1 - 13:

(HV24) No. 7 - Chassis ground:

Is the resistance 1 MΩ or more?

Yes:

Replace Transmission assembly. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TH2A)>TRANSMISSION ASSEMBLY .

No:

Repair or replace the Wire harness between Inverter with converter assembly connector and Generator resolver connector.