Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

DESCRIPTION

This circuit provides power to the clearance warning ECU.

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - AIR CONDITIONER AMPLIFIER)

CHECK HARNESS AND CONNECTOR

  1. Disconnect the connectors from the clearance warning ECU C9 and air conditioner amplifier connector A10 or A11.
  2.  Measure the resistance according to the value(s) in the table below.

Standard resistance

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

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

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

Standard resistance

Standard resistance

3 INSPECT CLEARANCE WARNING ECU

INSPECT CLEARANCE WARNING ECU

  1. Disconnect the clearance warning ECU connector.
  2.  Turn the ignition switch ON.
  3.  Turn the clearance sonar main switch ON.
  4.  Measure the voltage between terminals +B and E of the ECU.

Standard voltage: 10 to 14 V

Result

Result

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

4 INSPECT PRINTED WIRE INTEGRATION BOARD SUB-ASSEMBLY

  1. Check that the malfunction disappears when a known good printed wire integration board sub-assembly is installed.

OK: Malfunction disappears

REPLACE PRINTED WIRE INTEGRATION BOARD SUB-ASSEMBLY

5 INSPECT INTEGRATION PANEL SUB-ASSEMBLY

  1. Check that the malfunction disappears when a known good integration panel sub-assembly is installed.

OK: Malfunction disappears.

REPLACE INTEGRATION PANEL SUB-ASSEMBLY

Other materials:

Touch screen gestures
Operations are performed by touching the screen directly with your finger. Operation method Outline Main use Touch Quickly touch and release once. Changing and selecting various settings. Drag* Touch the screen with your ...

Hydraulic test
1. Perform hydraulic test (a) Measure the line pressure. NOTICE: Perform the test at the normal operating ATF (Automatic Transmission Fluid) temperature: 50 to 80°C (122 to 176°F). The line pressure test should always be carried out in pairs. One technician should ...

Disposal
HINT: When scrapping a vehicle equipped with the SRS or disposing of the steering pad, be sure to deploy the airbag first in accordance with the procedure described below. If any abnormality occurs with airbag deployment, contact the SERVICE DEPT.

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  • Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit

    Toyota Sienna Service Manual: Clearance Warning ECU Power Source Circuit