RM35X0E _56 Audio / Visual / Telematics _079315 PARK ASSIST / MONITORING _0385761 TOYOTA PARKING ASSIST-SENSOR SYSTEM J

PARK ASSIST / MONITORING  TOYOTA PARKING ASSIST-SENSOR SYSTEM  Clearance Sonar Main Switch Circuit  


DESCRIPTION

The back sonar or clearance sonar switch assembly is installed at the base of the driver side of the instrument panel.

When the back sonar or clearance sonar switch assembly is turned on, an ON signal is sent to the clearance warning ECU assembly. The TOYOTA parking assist-sensor system operates according to this signal.

WIRING DIAGRAM

E302603E13
0.083,1.042 1.073,1.49 0.99,0.448 10 false from IG1 NO.1 Relay 1.448,1.208 2.385,1.417 0.938,0.208 10 false ECU-IG1 NO.3 2.49,0.917 2.667,1.104 0.177,0.188 10 false 5 3.719,0.917 3.948,1.104 0.229,0.188 10 false 2 2.583,1.406 2.979,1.583 0.396,0.177 10 false N50 2.583,1.594 4.156,2.344 1.573,0.75 10 false Back Sonar or Clearance Sonar Switch Assembly 4.875,0.927 5.156,1.094 0.281,0.167 10 false 38 5.135,1.042 5.594,1.24 0.458,0.198 10 false CLSW 5.01,1.875 5.469,2.073 0.458,0.198 10 false N48 5,2.052 6.229,2.438 1.229,0.385 10 false Clearance Warning ECU Assembly 2.698,0.927 3.01,1.125 0.313,0.198 10 false IG 3.365,0.927 3.708,1.115 0.344,0.188 10 false ECU

CAUTION / NOTICE / HINT

NOTICE:

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


PROCEDURE

1.READ VALUE USING GTS
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / Clearance Sonar / Data List.


e.

According to the display on the GTS, read the Data List.

Body Electrical > Clearance Sonar > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Main Switch Back sonar or clearance sonar switch assembly OFF or ON OFF: Back sonar or clearance sonar switch assembly off
ON: Back sonar or clearance sonar switch assembly on 		-
Clearance Sonar ECU Clearance warning ECU assembly information Normal or Abnormal Normal: Clearance warning ECU assembly normal
Abnormal: Clearance warning ECU assembly not normal 		-
Body Electrical > Clearance Sonar > Data List
Tester Display
Main Switch
Clearance Sonar ECU
50003 170 1,35

Result:
Result Proceed to
Both of the following conditions are met:
·

The display changes as shown above when the back sonar or clearance sonar switch assembly is operated.

·

"Normal" is displayed.


A
Both of the following conditions are met:
·

The display does not change as shown above when the back sonar or clearance sonar switch assembly is operated.

·

"Normal" is displayed.


B
Both of the following conditions are met:
·

The display changes as shown above when the back sonar or clearance sonar switch assembly is operated.

·

"Abnormal" is displayed.


C



A

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


B

2.INSPECT BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY

C

REPLACE CLEARANCE WARNING ECU ASSEMBLY

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>CLEARANCE WARNING ECU>REMOVAL


3.CHECK HARNESS AND CONNECTOR (BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY POWER SOURCE)
a.
E380278C06
1.49,0.219 1.958,0.438 0.469,0.219 1.958,1.375 2.573,0.719 2.573,0.719 2.771,0.719 true 0.073,0.031 0.385,0.188 0.313,0.156 10 false *a 1.604,0.25 2.021,0.458 0.417,0.208 10 false N50 2.844,0.625 3.156,0.823 0.313,0.198 10 false IG
*a Front view of wire harness connector
(to Back Sonar or Clearance Sonar Switch Assembly)


Disconnect the back sonar or clearance sonar switch assembly connector.


b.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
N50-5 (IG) - Body ground Ignition switch ON 11 to 14 V
N50-5 (IG) - Body ground Ignition switch off Below 1 V



Result:
Proceed to
OK
NG



OK

4.CHECK HARNESS AND CONNECTOR (BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY - CLEARANCE WARNING ECU ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK HARNESS AND CONNECTOR (BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY - CLEARANCE WARNING ECU ASSEMBLY)
a.

Disconnect the N48 clearance warning ECU assembly connector.


b.

Disconnect the N50 back sonar or clearance sonar switch assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N48-38 (CLSW) - N50-2 (ECU) Always Below 1 Ω
N48-38 (CLSW) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE CLEARANCE WARNING ECU ASSEMBLY

Click hereAudio / Visual / Telematics>PARK ASSIST / MONITORING>CLEARANCE WARNING ECU>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR