Toyota 4Runner: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
- 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.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Engine does not start |
ECU power source circuit |
|
|
SFI system |
|
|
|
Transponder key ECU assembly |
|
|
|
Security indicator light malfunction |
Security indicator light circuit |
|
|
Transponder key ECU assembly |
|
|
|
Unable to register key |
Key |
- |
|
Transponder key ECU assembly |
|
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Dtc Check / Clear
DTC CHECK / CLEAR
HINT:
When using the Techstream with the ignition switch off to troubleshoot:
Connect the Techstream to the vehicle and turn the front door courtesy light
switch LH ...
Push Switch / Key Unlock Warning Switch Malfunction (B2780)
DESCRIPTION
This DTC is stored if the transponder key ECU assembly does not detect that the
unlock warning switch assembly is on even when the ignition switch is ON. Under
normal conditions, the ...
Other materials about Toyota 4Runner:
Fail-safe Chart
FAIL-SAFE CHART
If a problem occurs in the power steering system, the power steering warning
light in the combination meter comes on and the power steering assist is stopped,
locked at a particular point or decreased simultaneously to protect the system.
...
Data List / Active Test
DATA LIST / ACTIVE TEST
1. READ DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any parts. This non-intrusive
inspection can be very usefu ...
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