RM38N0EC _56 Audio / Visual / Telematics _111825 PARK ASSIST / MONITORING _0501856 TOYOTA PARKING ASSIST-SENSOR SYSTEM J

PARK ASSIST / MONITORING  TOYOTA PARKING ASSIST-SENSOR SYSTEM  Clearance Warning ECU Power Source Circuit  


DESCRIPTION

This circuit provides power to operate the clearance warning ECU assembly.

WIRING DIAGRAM

E437404E04
0.042,0.469 1.604,0.771 1.563,0.302 10 false from IGR NO. 1 Relay*1 3.167,0.646 4.24,0.885 1.073,0.24 10 false ECU-IGR NO. 1 5.365,1.927 6.594,2.427 1.229,0.5 10 false Clearance Warning ECU Assembly 5.583,0.479 5.896,0.677 0.313,0.198 10 false IG 5.552,1.292 5.865,1.49 0.313,0.198 10 false E 5.323,1.188 5.635,1.385 0.313,0.198 10 false 31 5.385,0.385 5.698,0.583 0.313,0.198 10 false 1 5.385,1.76 5.698,1.958 0.313,0.198 10 false E51 0.313,0.948 2.74,1.25 2.427,0.302 10 false from Engine Stop and Start ECU*2 0.885,1.875 3.219,2.156 2.333,0.281 10 false *1: w/o Stop and Start System 0.896,2.26 3.229,2.542 2.333,0.281 10 false *2: w/ Stop and Start System

CAUTION / NOTICE / HINT

NOTICE:

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


PROCEDURE

1.CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY POWER SOURCE)
a.

Disconnect the E51 clearance warning ECU assembly connector.


b.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
Tester Connection Switch Condition Specified Condition

Click Location & Routing(E51)Location & Routing

Click Connector(E51)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>Clearance Warning ECU Assembly

E51-1 (IG) - Body ground Ignition switch ON 11 to 14 V*1
10.5 to 16V*2
E51-1 (IG) - Body ground Ignition switch off Below 1 V


*1: w/o Stop and Start System

*2: w/ Stop and Start System



Result:
Result Proceed to
OK A
NG (w/o Stop and Start System) B
NG (w/ Stop and Start System) C



A

2.CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - BODY GROUND)

B

REPAIR OR REPLACE HARNESS OR CONNECTOR

C

GO TO STOP AND START SYSTEM

Click hereEngine / Hybrid System>STOP AND START>STOP AND START SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING


2.CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - BODY GROUND)
a.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition

Click Location & Routing(E51)Location & Routing

Click Connector(E51)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>Clearance Warning ECU Assembly

E51-31 (E) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>TOYOTA PARKING ASSIST-SENSOR SYSTEM>PROBLEM SYMPTOMS TABLE


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR