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 |
|---|---|---|
|
Front power seat does not operate with front power seat switch |
Proceed to "Front Power Seat does not Operate with Front Power Seat Switch" |
|
|
Power seat position is not memorized |
Proceed to "Power Seat Position is not Memorized" |
|
|
Power seat does not return to memorized position |
Front power seat switch LH |
- |
|
Main body ECU (multiplex network body ECU) |
- |
|
|
Lumbar support function does not operate |
Power seat switch assembly |
|
|
Separate type front seatback spring assembly LH (Lumbar support motor) |
|
|
|
Harness or connector |
- |
.gif)
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
All functions do not operate |
Front power seat switch RH |
|
|
Harness or connector |
- |
|
|
Only slide function does not operate |
Front power seat switch RH |
|
|
Separate type front seat cushion spring assembly (Slide motor) |
|
|
|
Harness or connector |
- |
|
|
Only reclining function does not operate |
Front power seat switch RH |
|
|
Separate type front seatback spring assembly RH (Reclining motor) |
|
|
|
Harness or connector |
- |
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 ...
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK FRONT POWER SEAT SWITCH LH
(a) Disconnect the b18 and b19 connectors from the front power seat switch LH.
(b) Measure the voltage and resistance according to the value(s ...
Other materials about Toyota 4Runner:
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
HINT:
If a trouble code is output during the DTC check, inspect the trouble areas listed
for that code. For details of the code, refer to the "See page" below.
Power Steering System
DTC Code
D ...
Dtc Check / Clear
DTC CHECK / CLEAR
1. CHECK FOR DTC
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Air Conditioner / Trouble Codes.
(e) Check for DTCs.
2. CLEAR DTC ...
0.0088