Last Modified: 11-29-2007 1.6 D
Service Category: Suspension Section: Suspension Control System
Model Year: 2008 Model: Sequoia Doc ID: RM000001N8X00DX
Title: SUSPENSION CONTROL: AIR SUSPENSION SYSTEM (w/ AVS): HOW TO PROCEED WITH TROUBLESHOOTING (2008 Sequoia)

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:

*: Use the Techstream.

1.

VEHICLE BROUGHT TO WORKSHOP

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2.

CUSTOMER PROBLEM ANALYSIS

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3.

CHECK AND CLEAR DTC*

(a) Check if any DTCs are output NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM (2008 Sequoia) .

HINT:

The suspension control ECU of this system is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the CAN communication system.

Result

Result

Proceed to

CAN DTC not output

A

CAN DTC output

B

B

GO TO CAN COMMUNICATION SYSTEM

A

4.

CHECK AND CLEAR DTC*

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

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5.

PROBLEM SYMPTOM CONFIRMATION

(a) Measure the resistance according to the value(s) in the table below.

Result

Result

Proceed to

Symptom Does Not Occur

A

Symptom Occurs

B

B

Go to step 7

A

6.

SYMPTOM SIMULATION

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7.

CHECK DTC*

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

Result

Result

Proceed to

DTC not output

A

DTC output

B

B

Go to step 9

A

8.

PROBLEM SYMPTOMS TABLE

(a) Refer to the Problem Symptoms Table SUSPENSION CONTROL: AIR SUSPENSION SYSTEM (w/ AVS): PROBLEM SYMPTOMS TABLE (2008 Sequoia) .

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9.

DTC CHART

(a) Refer to the Diagnostic Trouble Code Chart SUSPENSION CONTROL: AIR SUSPENSION SYSTEM (w/ AVS): DIAGNOSTIC TROUBLE CODE CHART (2008 Sequoia) .

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10.

CIRCUIT INSPECTION*

(a) Inspect the circuit.

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11.

IDENTIFICATION OF PROBLEM

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12.

REPAIR OR REPLACE

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13.

CONFIRMATION TEST

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END