DOOR / HATCH: FUEL LID OPENER SYSTEM: TERMINALS OF ECU; 2019 - 2024 MY Camry HV [09/2018

Last Modified: 11-20-2023	6.11:8.1.0	Doc ID: RM100000001E2LC
Model Year Start: 2019	Model: Camry HV	Prod Date Range: [09/2018 - ]
Title: DOOR / HATCH: FUEL LID OPENER SYSTEM: TERMINALS OF ECU; 2019 - 2024 MY Camry HV [09/2018 - ]

TERMINALS OF ECU

CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

(a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

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(b) Reconnect the instrument panel junction block assembly connectors.

HINT:

Measure the values on the wire harness side with the connectors disconnected.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
MB-11 (GND1) - Body ground	-	Ground	Always	Below 1 Ω
MB-31 (BECU) - Body ground	-	Auxiliary battery power supply	Power switch off	11 to 14 V
MB-30 (ACC) - Body ground	-	ACC power supply	Power switch on (ACC)	11 to 14 V
MB-30 (ACC) - Body ground	-	ACC power supply	Power switch off	Below 1 V
MB-32 (IG) - Body ground	-	IG power supply	Power switch on (IG)	11 to 14 V
MB-32 (IG) - Body ground	-	IG power supply	Power switch off	Below 1 V

(d) Install the main body ECU (multiplex network body ECU) to the instrument panel junction block assembly.

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(e) Measure the voltage and check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
K52-15 (FUSW) - Body ground	G - Body ground	Fuel lid opener switch signal	Fuel lid opener switch pushed	Below 1 V
K52-15 (FUSW) - Body ground	G - Body ground	Fuel lid opener switch signal	Fuel lid opener switch not pushed	11 to 14 V
K51-24 (FUEL) - Body ground	G - Body ground	Fuel lid open request signal	Power switch off Fuel lid opener switch not pushed → pushed for 0.8 second	4.5 to 5.5 V → Below 1 V → 4.5 to 5.5 V

CHECK ECM

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