DTC P0AAE-123: Hybrid Battery Pack Air Temperature Sensor "A" Circuit Low; DTC P0AAF-123: Hybrid Battery Pack Air Temperature Sensor "A" Circuit High [08/2013 - ]: Procedure

B → See step   8 

A: Go to next step 

1. Check that the service plug grip is not installed.
   NOTE:

   After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair information because this may cause a malfunction.

2. Remove the luggage compartment front trim cover. Refer to REMOVAL [08/2013 - ] - Step 10 .
3. Check the connections of the z8 connector of the battery smart unit.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK

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

4. Install the luggage compartment front trim cover.

NG → CONNECT SECURELY 

OK: Go to next step 

1. Check that the service plug grip is not installed.
   NOTE:

   After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair information because this may cause a malfunction.

2. Remove the luggage compartment front trim cover. Refer to REMOVAL [08/2013 - ] - Step 10 .
3. Visually check the installation condition of the inlet air temperature sensor.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK

   The inlet air temperature sensor is installed in the correct location and its claws are engaged securely.

   Result

   Result	Proceed to
   The inlet air temperature sensor is installed in the correct location and its claws are engaged securely	A
   Claws are damaged.	B
   Inlet air temperature sensor is not installed correctly, but claws are not damaged.	C

4. Install the luggage compartment front trim cover.

B → See step   6 

C → INSTALL PARTS CORRECTLY 

A: Go to next step 

1. Check that the service plug grip is not installed.
   NOTE:

   After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair information because this may cause a malfunction.

2. Remove the luggage compartment front trim cover. Refer to REMOVAL [08/2013 - ] - Step 10 .
3. Remove the rear side seat back assembly LH.
4. Disconnect the P10 and z8 battery smart unit connectors.
5. Measure the resistance according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   z8-1 (TC0) - z8-7 (GC0)	0 °C (32 °F)	26.7 to 27.8 kΩ
   	25 °C (77 °F)	9.9 to 10.1 kΩ
   	40 °C (104 °F)	5.73 to 5.92 kΩ

   TEXT IN ILLUSTRATION
   
   

   *a	Rear view of wire harness connector (to Battery Smart Unit)

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   z8-1 (TC0) - P10-3 (IGCT)	Power switch off	10 kΩ or higher
   z8-1 (TC0) - P10-6 (GND)	Power switch off	10 kΩ or higher
   z8-7 (GC0) - P10-3 (IGCT)	Power switch off	10 kΩ or higher
   z8-7 (GC0) - P10-6 (GND)	Power switch off	10 kΩ or higher

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   z8-4 (TB0) - P10-3 (IGCT)	Power switch off	10 kΩ or higher
   z8-4 (TB0) - P10-6 (GND)	Power switch off	10 kΩ or higher
   z8-10 (GB0) - P10-3 (IGCT)	Power switch off	10 kΩ or higher
   z8-10 (GB0) - P10-6 (GND)	Power switch off	10 kΩ or higher
   z8-3 (TB1) - P10-3 (IGCT)	Power switch off	10 kΩ or higher
   z8-3 (TB1) - P10-6 (GND)	Power switch off	10 kΩ or higher
   z8-9 (GB1) - P10-3 (IGCT)	Power switch off	10 kΩ or higher
   z8-9 (GB1) - P10-6 (GND)	Power switch off	10 kΩ or higher
   z8-2 (TB2) - P10-3 (IGCT)	Power switch off	10 kΩ or higher
   z8-2 (TB2) - P10-6 (GND)	Power switch off	10 kΩ or higher
   z8-8 (GB2) - P10-3 (IGCT)	Power switch off	10 kΩ or higher
   z8-8 (GB2) - P10-6 (GND)	Power switch off	10 kΩ or higher

8. Reconnect the P10 and z8 battery smart unit connectors.
9. Install the rear side seat back assembly LH.
10. Install the luggage compartment front trim cover.

NG → See step   5 

OK → See step   7 

1. Check that the service plug grip is not installed.
   NOTE:

   After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair information because this may cause a malfunction.

2. Remove the luggage compartment front trim cover. Refer to REMOVAL [08/2013 - ] - Step 10 .
3. Check the wire harness and connectors of the battery temperature sensor and inlet air temperature sensor for abnormalities by sight and touch.

   Specified Condition

   There are no open or short circuits in the wire harness and connectors. There are no short circuits to other wire harnesses.

   HINT: 

   Because the battery harness is not available as a supply part, if the harness cannot be repaired, replace the HV battery assembly.

4. Install the luggage compartment front trim cover.

NG → REPAIR HARNESS OR CONNECTOR 

OK → See step   6