Home › Vehicle Exterior › Door/Hatch › POWER BACK DOOR SYSTEM
Last Modified: 11-27-2007 1.6 D
Service Category: Vehicle Exterior Section: Door/Hatch
Model Year: 2008 Model: LX570 Doc ID: RM000003EBQ000X
Title: DOOR / HATCH: POWER BACK DOOR SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING (2008 LX570)

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:

  • Use the following procedures to troubleshoot the power back door 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 FOR DTC*

(a) Clear the DTCs DOOR / HATCH: POWER BACK DOOR SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

(b) Recheck for DTCs DOOR / HATCH: POWER BACK DOOR 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

5.

PROBLEM SYMPTOMS TABLE

(a) Refer to the Problem Symptoms Table DOOR / HATCH: POWER BACK DOOR 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 7
A

6.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check DOOR / HATCH: POWER BACK DOOR SYSTEM: OPERATION CHECK (2008 LX570) .

(b) Terminals of ECU DOOR / HATCH: POWER BACK DOOR SYSTEM: TERMINALS OF ECU (2008 LX570) .

(c) Data List / Active Test DOOR / HATCH: POWER BACK DOOR SYSTEM: DATA LIST / ACTIVE TEST (2008 LX570) .

NEXT

7.

REPAIR OR REPLACE
NEXT

8.

CONFIRMATION TEST
NEXT

END