Home › Vehicle Interior › Theft Deterrent/Keyless Entry › SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function)
Last Modified: 11-27-2007 1.6 D
Service Category: Vehicle Interior Section: Theft Deterrent/Keyless Entry
Model Year: 2008 Model: LX570 Doc ID: RM000000XU702DX
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function): HOW TO PROCEED WITH TROUBLESHOOTING (2008 LX570)

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:

  • Use these procedures to troubleshoot the smart access system with push-button start.
  • *: Use the Techstream.

1.

VEHICLE BROUGHT TO WORKSHOP
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2.

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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3.

INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the CAN communication system is functioning normally NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSTIC TROUBLE CODE CHART (2008 LX570) .

Result

Result

Proceed to

CAN DTC is not output

A

CAN DTC is output

B
B

Go to CAN COMMUNICATION SYSTEM

A

4.

INSPECT 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. Based on the DTCs output, try to cause the output of the same steering lock system DTC or engine immobiliser system DTC by simulating the symptoms indicated by the DTC.

Result

Result

Proceed to

DTC is not output

A

Steering lock system DTC is output

B

Engine immobiliser system DTC is output

C
B

Go to STEERING LOCK SYSTEM

C

Go to ENGINE IMMOBILISER SYSTEM

A

6.

PROBLEM SYMPTOMS TABLE

(a) Refer to the Problem Symptoms Table THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function): 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 THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function): OPERATION CHECK (2008 LX570)

(b) Data List / Active Test THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function): DATA LIST / ACTIVE TEST (2008 LX570)

(c) Terminals of ECU THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function): TERMINALS OF ECU (2008 LX570)

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8.

REPAIR OR REPLACEMENT
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9.

CONFIRMATION TEST
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END