Rear Sunshade Shift-linked Function does not Operate when Shift Lever is Moved to R Position

INTERIOR PANELS / TRIM: REAR SUNSHADE SYSTEM: Rear Sunshade Shift-linked Function does not Operate when Shift Lever is Moved to R Position
- Rear Sunshade Shift-linked Function does not Operate when Shift Lever is Moved to R Position

DESCRIPTION

When the power switch is on (IG) and the shift lever is moved to R, the shift position sensors send a reverse (R) signal to the hybrid vehicle control ECU. Then, the hybrid vehicle control ECU sends this signal to the main body ECU (multiplex network body ECU) via CAN. When the rear sunshade relay receives this signal with the rear sunshade raised, the rear sunshade is lowered.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
Since the rear sunshade system has functions that use CAN communication, first confirm that there is no malfunction in the CAN communication system using the How to Proceed with Troubleshooting procedure How To Proceed With Troubleshooting.

PROCEDURE

1. READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (READY).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Hybrid Control / Data List.

(e) Read the Data List according to the display on the Techstream.

Hybrid Control (Hybrid Vehicle Control ECU)





OK:

The Techstream display changes according to the shift state selected using the shift lever or P position switch (transmission shift main switch).

NG -- GO TO HYBRID CONTROL SYSTEM How To Proceed With Troubleshooting
OK -- Continue to next step.

2. CHECK HYBRID VEHICLE CONTROL ECU (REVERSE SIGNAL)

(a) Check if the shift position indicator light in the combination meter assembly operates normally.

OK:

The shift position indicator light indicates the actual shift position correctly.

NG -- REPLACE HYBRID VEHICLE CONTROL ECU Removal
OK -- Continue to next step.

3. PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Active Test.

(e) Perform the Active Test according to the display on the Techstream.

HINT
Make sure the rear sunshade assembly is raised before performing Active Test.

Main Body (Main Body ECU (Multiplex Network Body ECU))





OK:

The rear sunshade assembly is lowered.

NG -- CHECK HARNESS AND CONNECTOR

OK -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal

4. CHECK HARNESS AND CONNECTOR

(a) Disconnect the L24 rear sunshade relay connector.

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

Standard Resistance:





NG -- CHECK HARNESS AND CONNECTOR (REAR SUNSHADE RELAY - MAIN BODY ECU)

OK -- REPLACE REAR SUNSHADE RELAY Removal

5. CHECK HARNESS AND CONNECTOR (REAR SUNSHADE RELAY - MAIN BODY ECU)

(a) Disconnect the F8 main body ECU (multiplex network body ECU) connectors.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal