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Home >> Toyota >> 2021 >> Prius L Eco >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> HEADUP Display - Diagnostics - Introduction >> HEADUP Display System >> Problem Symptoms Table [11/2015 - ] >> Problem Symptoms Table [11/2015 - ]

Problem Symptoms Table [11/2015 - ]

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HEADUP DISPLAY SYSTEM

Symptom Suspected Area Link
Headup display is not displayed. Fuse (ECU-DCC NO. 2, ECU-IG1 NO. 4) -
Wire harness or connector -
Headup display switch (No. 2 combination switch assembly) circuit Refer to Main Switch Circuit [11/2015 - ]
Combination meter mirror ECU Refer to DISASSEMBLY [11/2015 - ]
Combination display Refer to DISASSEMBLY [11/2015 - ]
Brightness of the headup display does not change. Perform Active Test (Display Brightness) Refer to DATA LIST / ACTIVE TEST [11/2015 - 07/2020] , or refer to DATA LIST / ACTIVE TEST [07/2020 - ] 
Read the Data List (Brightness Up Switch (Meter), Brightness Down Switch (Meter)) Refer to DATA LIST / ACTIVE TEST [11/2015 - 07/2020] , or refer to DATA LIST / ACTIVE TEST [07/2020 - ] 
Combination meter mirror ECU Refer to DISASSEMBLY [11/2015 - ]
Combination display Refer to DISASSEMBLY [11/2015 - ]
Combination meter assembly (Meter circuit plate) Refer to REMOVAL [11/2015 - 12/2018] , or refer to REMOVAL [12/2018 - 07/2020] , or refer to REMOVAL [07/2020 - ]
Headup display is not displayed in the correct position. Perform Active Test (Display Position) Refer to DATA LIST / ACTIVE TEST [11/2015 - 07/2020] , or refer to DATA LIST / ACTIVE TEST [07/2020 - ] 
Read the Data List (Projection Position Up Switch (Meter), Projection Position Down Switch (Meter)) Refer to DATA LIST / ACTIVE TEST [11/2015 - 07/2020] , or refer to DATA LIST / ACTIVE TEST [07/2020 - ] 
Combination meter mirror ECU Refer to DISASSEMBLY [11/2015 - ]
Combination meter wire Refer to DISASSEMBLY [11/2015 - ]
No. 2 combination meter mirror Refer to DISASSEMBLY [11/2015 - ]
Combination meter assembly (Meter circuit plate) Refer to REMOVAL [11/2015 - 12/2018] , or refer to REMOVAL [12/2018 - 07/2020] , or refer to REMOVAL [07/2020 - ]
Other headup display malfunction (Other systems are normal) Combination meter mirror ECU Refer to REMOVAL [11/2015 - ]