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Last Modified: 11-27-2007 1.6 D
Service Category: Engine/Hybrid System Section: Cruise Control
Model Year: 2008 Model: LX570 Doc ID: RM000002L6T009X
Title: CRUISE CONTROL: CRUISE CONTROL SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING (2008 LX570)

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:

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

1.

VEHICLE BROUGHT TO WORKSHOP
NEXT

2.

INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

NEXT

3.

CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the CAN communication system is functioning normally.

Result

Result

Proceed to

CAN DTC is not output

A

CAN DTC is output

B
B

GO TO CAN COMMUNICATION SYSTEM

A

4.

CHECK INDICATOR

(a) Check the indicator CRUISE CONTROL: CRUISE CONTROL SYSTEM: DIAGNOSIS SYSTEM (2008 LX570) .

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5.

CHECK FOR DTC*

(a) Check for DTCs CRUISE CONTROL: CRUISE CONTROL SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

(b) Clear the DTCs CRUISE CONTROL: CRUISE CONTROL SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

(c) Recheck for DTCs CRUISE CONTROL: CRUISE CONTROL SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

Result

Result

Proceed to

DTC is not output

A

DTC is output

B
B

GO TO DTC CHART

A

6.

PROBLEM SYMPTOMS TABLE

(a) Refer to the Problem Symptoms Table CRUISE CONTROL: CRUISE CONTROL SYSTEM: PROBLEM SYMPTOMS TABLE (2008 LX570) .

Result

Result

Proceed to

Fault is not listed in problem symptoms table

A

Fault is listed in problem symptoms table

B
B

Go to step 8
A

7.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU CRUISE CONTROL: CRUISE CONTROL SYSTEM: TERMINALS OF ECU (2008 LX570) .

(b) Data List / Active Test CRUISE CONTROL: CRUISE CONTROL SYSTEM: DATA LIST / ACTIVE TEST (2008 LX570) .

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8.

ADJUST, REPAIR OR REPLACE

NEXT

9.

CONFIRMATION TEST
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END