DESCRIPTION If the radio and display receiver assembly cannot detect the navigation ECU for a certain period of time (90 seconds) after the engine switch is turned on (ACC) and the radio and display receiver assembly confirms that the information is missing by checking past navigation ECU recognition information (registered information), this DTC will be stored. HINT: The Navigation system uses USB communication between devices. If an open, short, short to +B or short to ground occurs in the USB circuit, communication is interrupted and the Navigation system will not operate normally.
HINT: This DTC may be stored due to environmental reasons such as electrical noise or interference. WIRING DIAGRAM ![]() CAUTION / NOTICE / HINT NOTICE:
PROCEDURE
(a) Turn the engine switch on (ACC) and wait for 90 seconds. (b) Press the "MAP" switch and check that the map screen is displayed normally.
HINT:
(a) Clear the DTCs. Body Electrical > Navigation System > Clear DTCs(b) Turn the engine switch off. (c) Turn the engine switch on (IG) and wait for 90 seconds. (d) Recheck for DTCs and check that no DTCs are output. Body Electrical > Navigation System > Trouble CodesOK: No DTCs are output.
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(c) Measure the voltage according to the value(s) in the table below. Standard Voltage:
(b) Disconnect the G111 radio and display receiver assembly connector. (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Replace the navigation ECU with a new one. Click here
(a) Clear the DTCs. Body Electrical > Navigation System > Clear DTCs(b) Turn the engine switch off. (c) Turn the engine switch on (IG) and wait for 90 seconds. (d) Recheck for DTCs and check that no DTCs are output. Body Electrical > Navigation System > Trouble CodesOK: No DTCs are output.
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Sfi System: High Pressure Fuel Pump Circuit Open (P123513)
DESCRIPTION The high-pressure direct injection fuel system consists of a spill control valve, check valve, fuel relief valve, fuel pressure sensor (for high pressure side), fuel pump assembly (for high pressure side) and direct fuel injector assemblies. The spill control valve adjusts the return vol ...