Reverse Signal Circuit

NAVIGATION: NAVIGATION SYSTEM (for HDD): Reverse Signal Circuit
- Reverse Signal Circuit

DESCRIPTION

The display and navigation module display receives a reverse signal from the main body ECU LH (cowl side junction block LH) and information about the navigation antenna, and then adjusts the vehicle position on the navigation display. The hybrid vehicle control ECU sends a reverse signal based on the shift position signal received from the shift lever position sensor. The reverse signal sent from the hybrid vehicle control ECU is received by the main body ECU LH (cowl side junction block LH) via the network gateway ECU using CAN communication and BEAN communication.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (REVERSE SIGNAL)

(a) Disconnect the K46 display and navigation module display connector.

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

Standard Voltage:





NG -- CHECK HARNESS AND CONNECTOR

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table

2. CHECK HARNESS AND CONNECTOR

(a) Disconnect the K46 display and navigation module display connector.

(b) Disconnect the V2 main body ECU LH (cowl side junction block LH) connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. READ VALUE 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: Powertrain / Hybrid Control / Data List.

(e) According to the display on the Techstream, read the "Data List".

Hybrid vehicle control ECU





OK:





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

4. REPLACE MAIN BODY ECU LH (COWL SIDE JUNCTION BLOCK LH)

(a) Replace the main body ECU LH (cowl side junction block LH).

(b) Enter the "Vehicle Signal Check Mode" screen. Refer to Check Vehicle Signal in Operation Check Operation Check.





(c) Check that the display changes between ON and OFF according to the shift lever operation.

OK:





HINT
This display is updated once per second. As a result, it is normal for the display to lag behind the actual switch operation.

NG -- REPLACE NETWORK GATEWAY ECU

OK -- END

5. REPLACE NETWORK GATEWAY ECU

(a) Replace the network gateway ECU Removal.

(b) Enter the "Vehicle Signal Check Mode" screen. Refer to Check Vehicle Signal in Operation Check Operation Check.





(c) Check that the display changes between ON and OFF according to the shift lever operation.

OK:





HINT
This display is updated once per second. As a result, it is normal for the display to lag behind the actual switch operation.

NG -- REPLACE HYBRID VEHICLE CONTROL ECU Service and Repair

OK -- END