DESCRIPTION The hybrid vehicle control ECU controls the back-up lights via the BKUP LP relay. WIRING DIAGRAM ![]() CAUTION / NOTICE / HINT NOTICE:
PROCEDURE
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes. (e) Check for DTCs. Powertrain > Hybrid Control > Trouble Codes
(a) Disconnect the 4D instrument panel junction block assembly connector. (b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Disconnect the 4F instrument panel junction block assembly connector. (b) Disconnect the A24 hybrid vehicle control ECU connector. (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
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(a) Connect the A24 hybrid vehicle control ECU connector. (b) Connect the 4D and 4F instrument panel junction block assembly connectors. (c) Measure the voltage according to the value(s) in the table below. Standard Voltage:
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(a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Climate Control Seat System(for Gasoline Model): How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: Use this procedure to troubleshoot the climate control seat system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT 2. CUSTOMER PROBLEM ANALYSIS (a) Interview the customer to confirm the problem. Click here NEXT 3. PRE-CHECK (a) Measure the battery ...