PROBLEM SYMPTOMS TABLE
HINT:
Symptom |
Suspected Area |
See page |
---|---|---|
Noise |
Oil (Level low) |
|
Oil (Wrong) |
|
|
Transfer faulty |
|
|
Oil leakage |
Oil (Level too high) |
|
Gasket (Damaged) |
|
|
Oil seal (Worn or damaged) |
|
|
O-ring (Worn or damaged) |
|
|
Hard to shift or does not shift |
Shifting key spring (Damaged) |
|
Synchronizer spring (Worn or damaged) |
|
|
4WD indicator light does not come on |
Harness or connector |
|
Combination meter |
|
|
CAN communication system |
|
|
Four wheel drive control ECU |
|
|
Transfer indicator switch (for 4WD position) |
|
|
4WD indicator light remains on |
Four wheel drive control ECU |
|
Transfer indicator switch (for 4WD position) |
|
|
Combination meter |
|
|
Shift from 2WD (H2) to 4WD (H4) is impossible |
Transfer indicator switch (for 4WD position) |
|
A.D.D. actuator |
|
|
Harness or connector |
|
|
ECM |
|
|
Four wheel drive control ECU |
|
|
Shift from 4WD (H4) to 2WD (H2) is impossible |
Transfer indicator switch (for 4WD position) |
|
A.D.D. actuator |
|
|
Harness or connector |
|
|
ECM |
|
|
Four wheel drive control ECU |
|
|
Shift from 4WD (H4) to 4WD (L4) is impossible |
Transfer indicator switch (for 4WD position) |
|
Transfer indicator switch (for L4 position) |
|
|
Transfer indicator switch (for neutral position) |
|
|
Harness or connector |
|
|
ECM |
|
|
Shift from 4WD (L4) to 4WD (H4) is impossible |
Transfer indicator switch (for 4WD position) |
|
Transfer indicator switch (for L4 position) |
|
|
Transfer indicator switch (for neutral position) |
|
|
Harness or connector |
|
|
ECM |
|
Installation
INSTALLATION
PROCEDURE
1. INSTALL REFRESHING SEAT SWITCH
(a) Attach the 4 claws to install the refreshing seat switch.
2. INSTALL LOWER CENTER INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY
3. INSTALL NO. 2 CONSOLE BOX RETAINER
4. INSTALL UPPER CONSO ...
General Information
GENERAL INFORMATION
A large number of ECU controlled systems are used in the 4RUNNER. In
general, ECU controlled systems are considered to be very intricate, requiring
a high level of technical knowledge to troubleshoot. However, most problem
...