P0A38

P313 HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P0A38-257, P0A39-259: Generator Temperature Sensor Circuit Low
P0A39-259 - Generator Temperature Sensor Circuit High

DESCRIPTION

Refer to the description for DTC P0A37-260 P0A37.

HINT
After confirming that DTC P0A38-257 or P0A39-259 is output, use the Techstream to check "Motor Temp No2" in the hybrid vehicle control ECU Data List.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR) P0340-886

NG -- CONNECT SECURELY
OK -- Continue to next step.

2. READ VALUE USING TECHSTREAM (MOTOR TEMP NO2)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Enter the following menus: Powertrain / Hybrid Control / Data List / Motor Temp No2.

(d) Read the Data List.

Result:

(e) Turn the ignition switch off.

C -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems

B -- READ VALUE USING TECHSTREAM (CHECK FOR SHORT)
A -- Continue to next step.

3. READ VALUE USING TECHSTREAM (CHECK FOR OPEN)

(a) Disconnect the generator temperature sensor connector.

(b) Connect terminals 4 (GMT) and 9 (GMTG) of vehicle side connector B59 of the generator temperature sensor.

(c) Connect the Techstream to the DLC3.

(d) Turn the ignition switch to ON.

(e) Enter the following menus: Powertrain / Hybrid Control / Data List / Motor Temp No2.

(f) Read the Data List.

OK:

Text in Illustration

HINT
The generator temperature sensor is not available separately. If it requires replacement, replace the hybrid vehicle transaxle assembly.

(g) Turn the ignition switch off.

(h) Connect the generator temperature sensor connector.

NG -- CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - GENERATOR TEMPERATURE SENSOR)

OK -- REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY Removal

4. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - GENERATOR TEMPERATURE SENSOR)

(a) Connect terminals 26 (GMT) and 27 (GMTG) of connector A65 of the hybrid vehicle control ECU.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Hybrid Control / Data List / Motor Temp No2.

(e) Read the Data List.

OK:

Text in Illustration

(f) Turn the ignition switch off.

NG -- REPLACE HYBRID VEHICLE CONTROL ECU Removal

OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR

5. READ VALUE USING TECHSTREAM (CHECK FOR SHORT)

(a) Disconnect the generator temperature sensor connector.

HINT
The generator temperature sensor is not available separately. If it requires replacement, replace the hybrid vehicle transaxle assembly.

(f) Turn the ignition switch off.

NG -- CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - GENERATOR TEMPERATURE SENSOR)

OK -- REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY Removal

6. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - GENERATOR TEMPERATURE SENSOR)

(a) Disconnect the generator temperature sensor connector.

(b) Disconnect connector A65 from the hybrid vehicle control ECU.

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

Standard Resistance (Check for Open):

Standard Resistance (Check for Short):

Text in Illustration

(d) Connect the hybrid vehicle control ECU connector.

(e) Connect the generator temperature sensor connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE HYBRID VEHICLE CONTROL ECU Removal