Solar Ventilation Switch Circuit
HEATING / AIR CONDITIONING: SOLAR VENTILATION SYSTEM: Solar Ventilation Switch Circuit
- Solar Ventilation Switch Circuit
DESCRIPTION
The solar ventilation system can operate when the solar ventilation switch is on and the moon roof glass assembly (solar panel) generates the necessary amount of electricity.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT
Before performing this inspection procedure, check if the Data List items for the solar ventilation system are displayed. 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.
PROCEDURE
1. 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: Body Electrical / Air Conditioner / Data List.
(e) Check the value(s) by referring to the table below.
Air Conditioner
OK:
The display is as specified in the Normal Condition column.
Result:
B -- INSPECT SOLAR VENTILATION SWITCH
C -- CHECK HARNESS AND CONNECTOR (SOLAR VENTILATION ECU - A/C AMPLIFIER)
D -- REPLACE SOLAR VENTILATION ECU Removal
A -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Solar Ventilation System
2. INSPECT SOLAR VENTILATION SWITCH
(a) Remove the solar ventilation switch.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE SOLAR VENTILATION SWITCH Removal
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (SOLAR VENTILATION SWITCH - BODY GROUND)
(a) 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 -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (SOLAR VENTILATION SWITCH - SOLAR VENTILATION ECU)
(a) Disconnect the solar ventilation ECU connector.
(b) 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 SOLAR VENTILATION ECU Removal
5. CHECK HARNESS AND CONNECTOR (SOLAR VENTILATION ECU - A/C AMPLIFIER)
(a) Disconnect the A/C amplifier connector.
(b) 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 -- Continue to next step.
6. REPLACE SOLAR VENTILATION ECU
(a) Replace the solar ventilation ECU with a known good one and check if the same problem occurs again Removal.
OK:
Same problem does not occur.
NG -- REPLACE A/C AMPLIFIER Removal
OK -- END (SOLAR VENTILATION ECU WAS DEFECTIVE)