Back-up Light Circuit [11/2015 -]: Procedure

1. Clear the DTCs.

   for Nickel Metal Hydride Battery: Refer to DTC CHECK / CLEAR [11/2015 - 11/2017] , or refer to DTC CHECK / CLEAR [11/2017 - 12/2018] , or refer to DTC CHECK / CLEAR [12/2018 -]

   for Lithium-ion Battery: Refer to DTC CHECK / CLEAR [11/2015 - 11/2017] , or refer to DTC CHECK / CLEAR [11/2017 -]

   Powertrain > Hybrid Control > Clear DTCs 

2. Check for DTCs.

   for Nickel Metal Hydride Battery: Refer to DTC CHECK / CLEAR [11/2015 - 11/2017] , or refer to DTC CHECK / CLEAR [11/2017 - 12/2018] , or refer to DTC CHECK / CLEAR [12/2018 -]

   for Lithium-ion Battery: Refer to DTC CHECK / CLEAR [11/2015 - 11/2017] , or refer to DTC CHECK / CLEAR [11/2017 -]

   Powertrain > Hybrid Control > Trouble Codes 

   Result

   Result	Proceed to
   Hybrid control system DTCs are not output	A
   Hybrid control system DTCs are output	B

Result: 

B 

GO TO HYBRID CONTROL SYSTEM 

for Nickel Metal Hydride Battery: Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2015 - 11/2017] , or refer to DIAGNOSTIC TROUBLE CODE CHART [11/2017 - 12/2018] , or refer to DIAGNOSTIC TROUBLE CODE CHART [12/2018 - 08/2019] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2019 - 06/2021] , or refer to DIAGNOSTIC TROUBLE CODE CHART [06/2021 -]

for Lithium-ion Battery: Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2015 - 11/2017] , or refer to DIAGNOSTIC TROUBLE CODE CHART [11/2017 - 12/2018] , or refer to DIAGNOSTIC TROUBLE CODE CHART [12/2018 - 08/2019] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2019 - 06/2021] , or refer to DIAGNOSTIC TROUBLE CODE CHART [06/2021 -]

Result: 

A 

See step  2

1. Disconnect the 3D instrument panel junction block assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   3D-3 - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Disconnect the 3F instrument panel junction block assembly connector.
2. Disconnect the A50 hybrid vehicle control ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   (A50)

   (A50)

   Tester Connection	Condition	Specified Condition
   3F-19 - A50-20 (BL)	Always	Below 1 Ω
   3F-19 or A50-20 (BL) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Reconnect the A50 hybrid vehicle control ECU connector.
2. Reconnect the 3F instrument panel junction block assembly connector.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   3F-19 - Body ground	Power switch on (IG), reverse (R) not selected	Below 1 V
   3F-19 - Body ground	Power switch on (IG), reverse (R) selected	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [11/2015 - 12/2018]  , or refer to  REMOVAL [12/2018 - 08/2019]  , or refer to  REMOVAL [08/2019 - 07/2020]  , or refer to  REMOVAL [07/2020 -] 

Result: 

OK 

See step  5

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   3H-10 - Body ground	Power switch on (IG), reverse (R) not selected	Below 1 V
   3H-10 - Body ground	Power switch on (IG), reverse (R) selected	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) 

Result: 

NG 

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [11/2015 - 12/2018]  , or refer to  REMOVAL [12/2018 - 07/2020]  , or refer to  REMOVAL [07/2020 -]