| Last Modified: 11-29-2007 | 1.6 T | |
| Service Category: Drivetrain | Section: Transfer/4wd/Awd | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM0000030AC002X |
| Title: JF3A TRANSFER / 4WD / AWD: TOUCH SELECT 2-4 AND HIGH-LOW SYSTEM: PROBLEM SYMPTOMS TABLE (2008 Sequoia) | ||
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.
Touch Select 2-4 and High-Low System
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Switch from 2WD (H2) to 4WD HIGH (H4F) impossible |
Harness or connector |
|
|
Transfer shift actuator |
|
|
|
A.D.D. actuator |
|
|
|
CAN communication system |
|
|
|
4WD control switch |
|
|
|
4WD control ECU |
|
|
|
Transfer assembly |
|
|
|
Switch from 4WD HIGH (H4F) to 2WD (H2) impossible |
Harness or connector |
|
|
Transfer shift actuator |
|
|
|
A.D.D. actuator |
|
|
|
CAN communication system |
|
|
|
4WD control switch |
|
|
|
4WD control ECU |
|
|
|
Transfer assembly |
|
|
|
Switch from 4WD HIGH (H4F) to 4WD LOW (L4F) impossible |
Harness or connector |
|
|
Transfer shift actuator |
|
|
|
CAN communication system |
|
|
|
4WD control switch |
|
|
|
4WD control ECU |
|
|
|
Transfer assembly |
|
|
|
Switch from 4WD LOW (L4F) to 4WD HIGH (H4F) impossible |
Harness or connector |
|
|
Transfer shift actuator |
|
|
|
CAN communication system |
|
|
|
4WD control switch |
|
|
|
4WD control ECU |
|
|
|
Transfer assembly |
|
|
|
Switch from 4WD HIGH (H4F) to 4WD HIGH (H4L) impossible |
Harness or connector |
|
|
Transfer shift actuator |
|
|
|
CAN communication system |
|
|
|
Center differential lock switch |
|
|
|
4WD control ECU |
|
|
|
Transfer assembly |
|
|
|
Switch from 4WD HIGH (H4L) to 4WD HIGH (H4F) impossible |
Harness or connector |
|
|
Transfer shift actuator |
|
|
|
CAN communication system |
|
|
|
Center differential lock switch |
|
|
|
4WD control ECU |
|
|
|
Transfer assembly |
|
|
|
Switch from 4WD LOW (L4F) to 4WD LOW (L4L) impossible |
Harness or connector |
|
|
Transfer shift actuator |
|
|
|
CAN communication system |
|
|
|
Center differential lock switch |
|
|
|
4WD control ECU |
|
|
|
Transfer assembly |
|
|
|
Switch from 4WD LOW (L4L) to 4WD LOW (L4F) impossible |
Harness or connector |
|
|
Transfer shift actuator |
|
|
|
CAN communication system |
|
|
|
Center differential lock switch |
|
|
|
4WD control ECU |
|
|
|
Transfer assembly |
|
|
|
4HI indicator light does not come on |
Harness or connector |
|
|
4WD fuse |
|
|
|
Combination meter |
|
|
|
CAN communication system |
|
|
|
4WD control switch |
|
|
|
4WD control ECU |
|
|
|
4HI indicator light remains on |
4WD control switch |
|
|
4WD control ECU |
|
|
|
Combination meter |
|
|
|
4LO indicator light does not come on |
Harness or connector |
|
|
4WD fuse |
|
|
|
Combination meter |
|
|
|
CAN communication system |
|
|
|
4WD control switch |
|
|
|
4WD control ECU |
|
|
|
Combination meter |
|
|
|
4HI indicator light remains on |
4WD control switch |
|
|
4WD control ECU |
|
|
|
Combination meter |
|
|
|
CENTER DIFF. indicator light does not come on |
Harness or connector |
|
|
4WD fuse |
|
|
|
Combination meter |
|
|
|
CAN communication system |
|
|
|
Center differential lock switch |
|
|
|
4WD control ECU |
|
|
|
Combination meter |
|
|
|
CENTER DIFF. light remains on |
Center differential lock switch |
|
|
4WD control ECU |
|
|
|
Combination meter |
|
|
|