Home Vehicle Interior Door Lock POWER DOOR LOCK CONTROL SYSTEM
Last Modified: 11-27-2007 1.6 D
Service Category: Vehicle Interior Section: Door Lock
Model Year: 2008 Model: LX570 Doc ID: RM000000TNQ015X
Title: DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING (2008 LX570)

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:

  • Use these procedures to troubleshoot the power door lock control system.
  • *: Use the Techstream.

1.

VEHICLE BROUGHT TO WORKSHOP

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2.

CUSTOMER PROBLEM ANALYSIS

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3.

INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

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

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4.

CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

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

Result

Result

Proceed to

LIN DTC is not output

A

LIN DTC is output

B

B

Go to LIN COMMUNICATION SYSTEM

A

5.

CHECK FOR DTC*

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

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

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

Result

Result

Proceed to

DTC is not output

A

DTC is output

B

B

Go to DIAGNOSTIC TROUBLE CODE CHART

A

6.

PROBLEM SYMPTOMS TABLE

(a) Refer to the Problem Symptoms Table DOOR LOCK: POWER DOOR LOCK 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) Operation Check DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: OPERATION CHECK (2008 LX570)

(b) Terminals of ECU DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: TERMINALS OF ECU (2008 LX570)

(c) Data List / Active Test DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: DATA LIST / ACTIVE TEST (2008 LX570)

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8.

ADJUST, REPAIR OR REPLACE

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9.

CONFIRMATION TEST

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END