Last Modified: 11-29-2007 1.6 D
Service Category: Suspension Section: Suspension Control System
Model Year: 2008 Model: Sequoia Doc ID: RM000001N9H00DX
Title: SUSPENSION CONTROL: AIR SUSPENSION SYSTEM (w/ AVS): DIAGNOSIS SYSTEM (2008 Sequoia)

DIAGNOSIS SYSTEM

1. CHECK DLC3

(a) Check the DLC3 SUSPENSION CONTROL: AIR SUSPENSION SYSTEM (w/ AVS): DTC CHECK / CLEAR (2008 Sequoia) .

HINT:

  • If any properly connected ECUs or sensors are not displayed, there is a communication stop in the system NETWORKING: CAN COMMUNICATION SYSTEM: PROBLEM SYMPTOMS TABLE (2008 Sequoia) .
  • Display the communication BUS check screen for approximately 1 minute and check for ECUs and sensors that are not indicated on the screen.

2. DTCs (Normal mode)

(a) DTCs are memorized in the suspension control ECU and read by using the Techstream SUSPENSION CONTROL: AIR SUSPENSION SYSTEM (w/ AVS): TEST MODE PROCEDURE (2008 Sequoia) .

3. TEST MODE

(a) By switching from normal mode into test mode, you can inspect the height control switch, height control mode select switch, and absorber control switch SUSPENSION CONTROL: AIR SUSPENSION SYSTEM (w/ AVS): TEST MODE PROCEDURE (2008 Sequoia) .

4. CHECK INDICATOR LIGHT

(a) Turn the ignition switch to ON.

(b) Check that the height control manual indicator light and the height control indicator light come on for 2 seconds. If the indicator check result is not normal, proceed to troubleshooting for the CAN Communication System NETWORKING: CAN COMMUNICATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING (2008 Sequoia) .