Last Modified: 11-29-2007 1.6 D
Service Category: Engine/Hybrid System Section: Cruise Control
Model Year: 2008 Model: Sequoia Doc ID: RM000000PLO03MX
Title: CRUISE CONTROL: CRUISE CONTROL SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING (2008 Sequoia)

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:

  • Use the following procedures to troubleshoot the cruise control system.
  • *: Use the Techstream.

1.

VEHICLE BROUGHT TO WORKSHOP
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2.

PROBLEM SYMPTOM CONFIRMATION
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3.

CHECK CAN COMMUNICATION SYSTEM*

(a) Check for output DTCs.

Result:

Proceed to

Proceed to

CAN DTC is not output

A

CAN DTC is output

B

HINT:

The ECM 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.

B

GO TO CAN COMMUNICATION SYSTEM .
A

4.

DTC CHECK AND CLEAR*

Refer to DTC Check/Clear CRUISE CONTROL: CRUISE CONTROL SYSTEM: DTC CHECK / CLEAR (2008 Sequoia) .

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5.

DTC CHECK (OTHER THAN CAN SYSTEM DTC)*

Result:

Result

Proceed to

DTC is not output

A

DTC is output

B
B

GO TO DTC CHART .
A

6.

PROBLEM SYMPTOM CONFIRMATION

Result:

Result

Proceed to

Symptom does not occur

A

Symptom occurs

B
B

Go to STEP 9
A

7.

SYMPTOM SIMULATION

Refer to Electronic Circuit Inspection Procedure INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: ELECTRONIC CIRCUIT INSPECTION PROCEDURE (2008 Sequoia) .

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8.

PROBLEM SYMPTOMS TABLE

Refer to Problem Symptoms Table CRUISE CONTROL: CRUISE CONTROL SYSTEM: PROBLEM SYMPTOMS TABLE (2008 Sequoia) .

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9.

CIRCUIT INSPECTION
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10.

TERMINALS OF ECM

Refer to Terminals of ECM CRUISE CONTROL: CRUISE CONTROL SYSTEM: TERMINALS OF ECU (2008 Sequoia) .

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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