Last Modified: 7-3-2017 6.8:8.0.40 Doc ID: RM0000018AL005X
Model Year Start: 2007 Model: LX470 Prod Date Range: [08/2006 -           ]
Title: DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2007 MY LX470 [08/2006 -        ]

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:

Troubleshooting of the wireless door lock control system is based on the premise that the door lock control system is operating normally. Accordingly, before troubleshooting the wireless door lock control system, first make certain that the door lock control system is operating normally.

Perform troubleshooting in accordance with the procedure on the following page.

HINT:

  • Use this procedure to troubleshoot the wireless door lock control system.
  • *: Use the intelligent tester.

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 MULTIPLEX COMMUNICATION SYSTEM (BEAN)*

(a) Using the intelligent tester, check if the Multiplex Communication System (MPX) is functioning normally.

Result

Result

Proceed to

MPX DTC is not output

A

MPX DTC is output

B
B

Go to MULTIPLEX COMMUNICATION SYSTEM
A

4.

PROBLEM SYMPTOMS TABLE

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 6
A

5.

OVERALL ANALYSIS AND TROUBLESHOOTING*
  1. Terminals of ECU 2007 MY LX470 [08/2006 -        ]; DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM: TERMINALS OF ECU
  2. DATA LIST / ACTIVE TEST 2007 MY LX470 [08/2006 -        ]; DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM: DATA LIST / ACTIVE TEST
  3. On-vehicle inspection 2007 MY LX470 [08/2006 -        ]; DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM: ON-VEHICLE INSPECTION
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6.

ADJUST, REPAIR OR REPLACE
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7.

CONFIRMATION TEST
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END