Toyota Parking Assist-Sensor System Ecu Power Source Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - BATTERY AND BODY GROUND)
TOYOTA PARKING ASSIST-SENSOR 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 TOYOTA parking assist-sensor system, parking assist monitor system (w/ Side Monitor System), side monitor system and wide view front monitor system. When a malfunction occurs in this circuit, each system will be abnormal.
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
| 1.CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - BATTERY AND BODY GROUND) |
Disconnect the parking assist ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
F75-4 (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
|
F75-1 (+B) - F75-4 (GND1)
| Always
| 11 to 14 V
|
F75-8 (IG) - F75-4 (GND1)
| Engine switch on (IG)
| 11 to 14 V
|
F75-9 (ACC) - F75-4 (GND1)
| Engine switch on (ACC)
| 11 to 14 V
|
Text in Illustration*a
| Front view of wire harness connector
(to Parking Assist ECU)
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| OK |
|
|
|
| PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (Click here) |
|
