Back-up Light Circuit [12/2018 -]: Procedure
- CHECK FOR DTC
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
- Check for DTCs.
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 [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 [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
- CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND)
- Disconnect the 3D instrument panel junction block assembly connector.
- 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
- CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - HYBRID VEHICLE CONTROL ECU)
- Disconnect the 3F instrument panel junction block assembly connector.
- Disconnect the A50 hybrid vehicle control ECU connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
& Routing (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
- CHECK HYBRID VEHICLE CONTROL ECU (OUTPUT VOLTAGE)
- Connect the A50 hybrid vehicle control ECU connector.
- Connect the 3D and 3F instrument panel junction block assembly connector.
- 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 [12/2018 - 08/2019] , or refer to REMOVAL [08/2019 - 07/2020] , or refer to REMOVAL [07/2020 -]
Result:
OK
See step 5
- INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (OUTPUT VOLTAGE)
- 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
Result:
NG
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to REMOVAL [12/2018 - 07/2020] , or refer to REMOVAL [07/2020 -]
- Measure the voltage according to the value(s) in the table below.