Last Modified: 11-29-2007 1.6 C
Service Category: Suspension Section: Suspension Control System
Model Year: 2008 Model: Sequoia Doc ID: RM000001N9E004X
Title: SUSPENSION CONTROL: AIR SUSPENSION SYSTEM (w/ AVS): DESCRIPTION (2008 Sequoia)

DTC

U0100

Lost Communication with ECM / PCM "A"

DTC

U0122

Lost Communication with Vehicle Dynamics Control Module

DTC

U0126

Lost Communication with Steering Angle Sensor Module

DESCRIPTION

The suspension control ECU inputs signals from the skid control ECU and ECM via CAN communication. When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system first.

DTC Code

Detection Condition

Trouble Area

U0100

While driving at 30 km/h (19 mph), CAN communication between suspension control ECU and ECM stops for 3 seconds or more.
  • CAN communication line
  • ECM
  • Suspension control ECU

U0122

CAN communication between suspension control ECU and Skid control ECU stops for 3 seconds or more.
  • CAN communication line
  • Skid control ECU
  • Suspension control ECU

U0126

CAN communication between suspension control ECU and steering angle sensor stops for 3 seconds or more.
  • CAN communication line
  • Steering angle sensor
  • Suspension control ECU

INSPECTION PROCEDURE

PROCEDURE

1.

CHECK FOR DTC

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

(b) Perform a road test.

(c) Check if DTC U0100, U0122 or U0126 are output SUSPENSION CONTROL: AIR SUSPENSION SYSTEM (w/ AVS): DTC CHECK / CLEAR (2008 Sequoia) .

Result

Result

Proceed to

DTC is output

A

DTC is not output

B

HINT:

If a CAN communication malfunction DTC and a related sensor malfunction DTC are output at the same time, the CAN communication malfunction must be repaired before troubleshooting the sensor malfunction DTC.

A