Toyota 4Runner: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use these procedures to troubleshoot the automatic running board system.
PROCEDURE
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1. |
VEHICLE BROUGHT TO WORKSHOP |
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2. |
INSPECT BATTERY VOLTAGE |
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
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3. |
CHECK FOR DTC |
(a) Check for DTCs and make a note of any codes that are output.
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Result |
Proceed to |
|---|---|
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No DTCs are output |
A |
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DTC is output |
B |
| B | .gif) |
GO TO DIAGNOSTIC TROUBLE CODE CHART |
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4. |
PROBLEM SYMPTOMS TABLE |
(a) Refer to the Problem Symptoms Table (See page
.gif)
).
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Result |
Proceed to |
|---|---|
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Fault not listed in problem symptoms table |
A |
|
Fault listed in problem symptoms table |
B |
| B | |
GO TO STEP 6 |
|
|
5. |
OVERALL ANALYSIS AND TROUBLESHOOTING |
(a) Operation Check (See page ).
(b) Terminals of ECU (See page ).
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6. |
REPAIR OR REPLACE |
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7. |
CONFIRMATION TEST |
| NEXT | |
END |
System Diagram
SYSTEM DIAGRAM
...
Operation Check
OPERATION CHECK
1. CHECK AUTOMATIC RUNNING BOARD OPERATION
(a) When side auto step switch assembly is "AUTO", the operation and condition
of this control are described below.
Check that ...
Other materials about Toyota 4Runner:
Seat heaters
1. On The indicator light comes on.
2. Adjusts the seat temperature The further you move the dial forward, the
warmer the seat becomes.
The seat heaters can be used when Vehicles without a smart key
system
The engine switch is in the “ON” positi ...
Lost Communication with Back Door Power Window ECU (Abnormal Power Supply) (B2327,B2328)
DESCRIPTION
DTC B2327 is stored when LIN communication between the multiplex network
door ECU (back door P/W) and back door power window regulator motor assembly
stops for 10 seconds or more.
DTC B2328 is stored when a malfunction in the LI ...
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