Toyota 4Runner: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the front power seat control system.
- *: Use the Techstream.
PROCEDURE
|
1. |
VEHICLE BROUGHT TO WORKSHOP |
|
.gif)
|
2. |
INSPECT BATTERY VOLTAGE |
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
|
|
3. |
CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Use the Techstream to check if the CAN communication system is functioning
normally (See page .gif)
).
|
Result |
Proceed to |
|---|---|
|
CAN DTC is not output |
A |
|
CAN DTC is output |
B |
| B | .gif) |
GO TO CAN COMMUNICATION SYSTEM |
|
|
4. |
CHECK DTC OUTPUT* |
(a) Check for DTCs (See page ).
(b) Clear the DTCs (See page ).
(c) Recheck for DTCs (See page ).
|
Result |
Proceed to |
|---|---|
|
DTC is not output |
A |
|
DTC is output |
B |
| B | |
GO TO STEP 7 |
|
|
5. |
PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table (See page
).
|
Result |
Proceed to |
|---|---|
|
Fault is not listed in problem symptoms table |
A |
|
Fault is listed in problem symptoms table |
B |
| B | |
GO TO STEP 7 |
|
|
6. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Operation Check (See page )
(b) Data List / Active Test (See page )
(c) Terminals of ECU (See page )
|
|
7. |
REPAIR OR REPLACE |
|
|
8. |
CONFIRMATION TEST |
| NEXT | |
END |
System Diagram
SYSTEM DIAGRAM
Communication Table
Sender
Receiver
Signal
Line
ECM
Main Body ECU (Multiplex Network Body ECU)
...
Operation Check
OPERATION CHECK
1. CHECK FRONT POWER SEAT FUNCTION
(a) Check the basic functions.
Text in Illustration
*a
Sliding Function
*b
Front Vertical Func ...
Other materials about Toyota 4Runner:
Certification ECU Communication Stop Mode
DESCRIPTION
Detection Item
Symptoms
Trouble Area
Certification ECU Communication Stop Mode
Either condition is met:
"Certification (Smart)" is not displayed on the "CAN ...
Yaw Rate Sensor Malfunction (C1436)
DESCRIPTION
Refer to DTC C1419 and C1435 (See page ).
DTC Code
DTC Detection Condition
Trouble Area
C1436
Either condition is met:
With the vehicle stationary, the yaw rate and accel ...
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