Toyota Corolla Cross: 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. In this case, the window defogger system may not operate.
HINT:
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Window Defogger System
|
Symptom | Suspected Area |
Link |
| Window defogger system does not operate |
Proceed to the "Rear Window Defogger System does not Operate" |
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TERMINALS OF ECU CHECK POWER DISTRIBUTION BOX ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
(a) Remove the main body ECU (multiplex network body ECU). Click here
*1 Power Dist
DATA LIST / ACTIVE TEST DATA LIST NOTICE:
In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a p
DESCRIPTION An operation request signal is sent to the air conditioning amplifier assembly via LIN communication when the rear window defogger switch (air conditioning control assembly) is operated. W
SEE MORE:
MONITOR DESCRIPTION The auxiliary battery supplies electricity to the ECM even when the ignition switch is off. This power allows the ECM to store data such as DTC history, Freeze Frame Data and fuel trim values. If the auxiliary battery voltage falls below a minimum level, the memory is cleared and
READINESS MONITOR DRIVE PATTERN PURPOSE OF READINESS TESTS
The On-Board Diagnostic (OBD II) system is designed to monitor the performance of emission related components, and indicate any detected abnormalities using DTCs (Diagnostic Trouble Codes). Since various components need to be monitored
