Toyota Corolla Cross: System Description
SYSTEM DESCRIPTION
GENERAL
The windshield deicer system uses thin heater wires attached to the inside of the windshield glass to help deice the window surface more quickly. An indicator light illuminates while the system is operating. This system automatically turns off after approximately 15 minutes.
NOTICE:
If the auxiliary battery voltage becomes low, auxiliary battery load control will operate in order to ensure sufficient power is supplied to the power steering system. In this case, the windshield deicer system may not operate.
FUNCTION OF MAIN COMPONENT
|
Component | Outline |
|---|---|
|
Front Wiper Deicer Switch | Sends signals to the air conditioning control assembly to operate the windshield deicer system. |
|
Air Conditioning Control Assembly | Sends windshield deicer activation request signals to the air conditioning amplifier assembly. |
|
Air Conditioning Amplifier Assembly |
Sends windshield deicer activation request signals to the DEICER relay. |
|
DEICER Relay | Receives windshield deicer activation request signals from the air conditioning amplifier assembly and supplies power to the windshield deicer wire (windshield glass). |
|
Windshield Deicer Wire (Windshield Glass) |
Receives power from the DEICER relay and heats the windshield deicer wire (windshield glass). |
READ NEXT:
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedure to troubleshoot the windshield deicer system.
*: Use the GTS.
PROCEDURE
1. VEHICLE BROUGHT TO WORKSHOP
NEXT
Operation Check
OPERATION CHECK CHECK WINDSHIELD DEICER SYSTEM
(a) Turn the ignition switch to ON. (b) Check that the windshield deicer wire (windshield glass) becomes warm by operating the front wiper deicer switch
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE: If the auxiliary battery voltage becomes low, auxiliary battery load control will operate in order to ensure sufficient power is supplied to the power steering system. I
SEE MORE:
Inspection
INSPECTION
PROCEDURE
1. INSPECT ELECTRIC PARKING BRAKE SWITCH ASSEMBLY
(a) Check the resistance.
(1) Measure the resistance according to the value(s) in the
table below.
Standard Resistance:
Tester Connection
Condition
Spec
Precaution
PRECAUTION
PRECAUTION
NOTICE:
If Continuously Variable Transaxle (CVT) parts are replaced, perform the
following as necessary: Parts Replacement Compensation Table
*1: When replacing with a new TCM
*2: When replacing with a TCM which was installed to another vehicle
