Park Assist Monitoring. Parking Assist Monitor System (W/ Side Monitor System) Ecu Power Source Circuit

CHECK FOR DTC (NAVIGATION SYSTEM OR AUDIO AND VISUAL SYSTEM)

CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - BATTERY AND BODY GROUND)

PARKING ASSIST MONITOR SYSTEM (w/ Side Monitor System) - ECU Power Source Circuit

DESCRIPTION

This circuit is the power source circuit to operate the parking assist ECU. The parking assist ECU controls the parking assist monitor system and side monitor system.

HINT:

The parking assist ECU is connected to other ECUs via CAN communication or AVC-LAN communication.
for Navigation Receiver Type:
If the parking assist ECU does not operate due to a power source problem, a navigation system DTC may be stored due to an AVC-LAN communication interruption.
for Radio and Display Type:
If the parking assist ECU does not operate due to a power source problem, an audio and visual system DTC may be stored due to an AVC-LAN communication interruption.
If the parking assist ECU does not operate due to a power source problem, other system DTCs may be stored due to a CAN communication interruption.

WIRING DIAGRAM

Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Park Assist Monitoring.Toyota Parking Assist-Sensor System (W/ Multi-Display).Parking Assist Monitor System (W/ Side Monitor System) Ecu Power Source Circuit

INSPECTION PROCEDURE

NOTICE:

Inspect the fuse for circuits related to this system before performing the following inspection procedure.

1.CHECK FOR DTC (NAVIGATION SYSTEM OR AUDIO AND VISUAL SYSTEM)

Clear the DTCs.
1. for Navigation Receiver Type: LandCruiser RM0000011BU0W7X.html
2. for Radio and Display Type: LandCruiser RM0000014CZ0EQX.html

Check for DTCs.
1. for Navigation Receiver Type: LandCruiser RM0000011BU0W7X.html
2. for Radio and Display Type: LandCruiser RM0000014CZ0EQX.html
OK:
DTC B15D8 is not output.
HINT:
The parking assist ECU is connected to the navigation receiver assembly*1 or radio and display receiver assembly*2 by AVC-LAN communication line. DTC B15D8 may be stored to the navigation receiver assembly*1 or radio and display receiver assembly*2 due to the power source condition or changes in the power supply waveform for the parking assist ECU, even though there is no problem with the AVC-LAN communication system.
1. *1: for Navigation Receiver Type
2. *2: for Radio and Display Type
Result
Result
Proceed to
OK
A
NG (for Navigation Receiver Type)
B
NG (for Radio and Display Type)
C

Result
Result	Proceed to
OK	A
NG (for Navigation Receiver Type)	B
NG (for Radio and Display Type)	C

GO TO NAVIGATION SYSTEM (LandCruiser RM0000011BN0THX.html)

GO TO AUDIO AND VISUAL SYSTEM (LandCruiser RM000003YVF01HX.html)

A

2.CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - BATTERY AND BODY GROUND)

Disconnect the I6 parking assist ECU connector.

Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Condition
Specified Condition
I6-4 (GND1) - Body ground
Always
Below 1 Ω

Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
Condition
Specified Condition
I6-1 (+B) - I6-4 (GND1)
Always
10 to 16 V

Text in Illustration
*a	Front view of wire harness connector (to Parking Assist ECU)

REPAIR OR REPLACE HARNESS OR CONNECTOR

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (LandCruiser RM0000035D7079X.html)

Tester Connection	Condition	Specified Condition
I6-4 (GND1) - Body ground	Always	Below 1 Ω