Solar Ventilation ECU Power Source Circuit

HEATING / AIR CONDITIONING: SOLAR VENTILATION SYSTEM: Solar Ventilation ECU Power Source Circuit
- Solar Ventilation ECU Power Source Circuit

DESCRIPTION

For the solar ventilation system, the moon roof glass assembly (solar panel) generates electricity using sunlight to generate the required power.

The electricity generated by the moon roof glass assembly (solar panel) is sent to the solar ventilation ECU and used as the power source for the solar ventilation system.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT MOON ROOF GLASS ASSEMBLY (SOLAR PANEL)

(a) Leave the vehicle for 10 minutes in a location where the following conditions are met, and then measure the voltage.

System Operation Conditions Reference Table





NOTICE:
To ensure stable generation of voltage by the moon roof glass assembly (solar panel), make sure to park the vehicle in a location where the system operation conditions reference table are satisfied.

(b) Disconnect the solar ventilation ECU connector.





CAUTION:
The moon roof glass assembly (solar panel) generates electricity when exposed to a light source such as sunlight. If an inspection of the moon roof glass assembly (solar panel) is performed while electricity is being generated, work carefully in order to prevent an accidental short circuit or electric shock.

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

Standard Voltage:





Text in Illustration





NG -- CHECK HARNESS AND CONNECTOR (SOLAR VENTILATION ECU - SOLAR PANEL, BODY GROUND)
OK -- Continue to next step.

2. READ VALUE USING TECHSTREAM

(a) Reconnect the solar ventilation ECU connector.

(b) Connect the Techstream to the DLC3.

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

(d) Turn the Techstream on.

(e) Enter the following menus: Body Electrical / Air Conditioner / Data List.

(f) Check the value(s) by referring to the table below.

(1) Check that the Solar Voltage value in the Data List is 10 V or higher.

Air Conditioner





OK:

10 V or higher

HINT
If the Data List items are not displayed, inspect the communication circuit between the solar ventilation ECU and A/C amplifier Communication Circuit Between Solar Ventilation ECU And A/C Amplifier.

NG -- REPLACE SOLAR VENTILATION ECU Removal

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Solar Ventilation System

3. CHECK HARNESS AND CONNECTOR (SOLAR VENTILATION ECU - SOLAR PANEL, BODY GROUND)

(a) Disconnect the solar ventilation ECU connector.





(b) Disconnect the moon roof glass assembly (solar panel) connector.





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

Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MOON ROOF GLASS ASSEMBLY (SOLAR PANEL) Removal