СИСТЕМА УПРАВЛЕНИЯ ГИБРИДНОЙ СИСТЕМОЙ, Diagnostic DTC:P0A38-257, P0A39-259

DESCRIPTION

Refer to the description for DTC P0A37-260 Click here.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK CONNECTOR CONNECTION CONDITION (POWER MANAGEMENT CONTROL ECU CONNECTOR)

   
   
   1. 

      Text in Illustration

      *A	for LHD
      *B	for RHD

      Check the connector connections and contact pressure of the relevant terminals for the power management control ECU connectors Click here.

      OK
      The connectors are connected securely and there are no contact pressure problems.

   
   

   NG

   CONNECT SECURELY

   OK

2. READ VALUE USING GTS (MOTOR TEMP NO2)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power switch on (IG).

   3. Enter the following menus: Powertrain / Hybrid Control / Data List / Motor Temp No2.

   4. Read the Data List.

      Result

      Result	Proceed to
      -40°C (-40°F)	A
      215°C (419°F)	B
      Same as actual temperature	C

   5. Turn the power switch off.

   
   

   B

   CHECK GENERATOR TEMPERATURE SENSOR Click here

   C

   CHECK FOR INTERMITTENT PROBLEMS Click here

   A

3. CHECK GENERATOR TEMPERATURE SENSOR

   
   

   1. Disconnect the A36 power management control ECU connector.

   2. Turn the power switch on (IG).

   3. 

      Text in Illustration

      *a	Rear view of wire harness connector (to Power Management Control ECU)

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition A36-27 (GMT) or A36-26 (GMTG) - Body ground and other terminals Power switch on (IG) Below 1 V

      Note

      Turning the power switch on (IG) with the power management control ECU connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

   4. Turn the power switch off.

   5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)
      Tester Connection Switch Condition Specified Condition A36-27 (GMT) - A36-26 (GMTG) Power switch off Motor temperature: 0°C (32°F) 142.6 to 184.1 kΩ Power switch off Motor temperature: 25°C (77°F) 44.2 to 54.4 kΩ Power switch off Motor temperature: 50°C (122°F) 16.2 to 19.1 kΩ Power switch off Motor temperature: 100°C (212°F) 3.1 to 3.5 kΩ

   6. Reconnect the A36 power management control ECU connector.

   
   

   NG

   CHECK HARNESS AND CONNECTOR (GENERATOR TEMPERATURE SENSOR - POWER MANAGEMENT CONTROL ECU) Click here

   OK

   REPLACE POWER MANAGEMENT CONTROL ECU Click here

4. CHECK GENERATOR TEMPERATURE SENSOR

   
   

   1. Disconnect the A36 power management control ECU connector.

   2. 

      Text in Illustration

      *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
      Check for Open
      Tester Connection Switch Condition Specified Condition A36-27 (GMT) - A36-26 (GMTG) Power switch off Motor temperature: 0°C (32°F) 142.6 to 184.1 kΩ Power switch off Motor temperature: 25°C (77°F) 44.2 to 54.4 kΩ Power switch off Motor temperature: 50°C (122°F) 16.2 to 19.1 kΩ Power switch off Motor temperature: 100°C (212°F) 3.1 to 3.5 kΩ
      Check for Short
      Tester Connection Switch Condition Specified Condition A36-27 (GMT) or A36-26 (GMTG) - Body ground and other terminals Power switch off 10 kΩ or higher

   3. Reconnect the A36 power management control ECU connector.

   
   

   NG

   CHECK HARNESS AND CONNECTOR (GENERATOR TEMPERATURE SENSOR - POWER MANAGEMENT CONTROL ECU) Click here

   OK

   REPLACE POWER MANAGEMENT CONTROL ECU Click here

5. CHECK HARNESS AND CONNECTOR (GENERATOR TEMPERATURE SENSOR - POWER MANAGEMENT CONTROL ECU)

   
   

   1. Remove the hybrid vehicle transmission assembly Click here.

   2. Disconnect the F50 generator temperature sensor connector.

   3. Disconnect the A36 power management control ECU connector.

   4. 

      Text in Illustration

      *a	Front view of wire harness connector (to Generator Temperature Sensor)
      *b	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
      Check for Open
      Tester Connection Switch Condition Specified Condition F50-4 (GMT) - A36-27 (GMT) Power switch off Below 1 Ω F50-8 (GMTG) - A36-26 (GMTG) Power switch off Below 1 Ω
      Check for Short
      Tester Connection Switch Condition Specified Condition F50-4 (GMT) or A36-27 (GMT) - Body ground and other terminals Power switch off 10 kΩ or higher F50-8 (GMTG) or A36-26 (GMTG) - Body ground and other terminals Power switch off 10 kΩ or higher

   5. Reconnect the A36 power management control ECU connector.

   6. Reconnect the F50 generator temperature sensor connector.

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

   REPLACE HYBRID VEHICLE TRANSMISSION ASSEMBLY Click here