Last Modified: 7-3-2017 6.8:8.0.40 Doc ID: RM000000W6Z03XX
Model Year Start: 2007 Model: LX470 Prod Date Range: [08/2006 -           ]
Title: A750F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2007 MY LX470 [08/2006 -        ]

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:

  • The ECM of this system is connected to the CAN and multiplex communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the CAN and multiplex communication system.
  • *: Use the intelligent tester.

1.

VEHICLE BROUGHT TO WORKSHOP
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2.

CUSTOMER PROBLEM ANALYSIS
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3.

INSPECT BATTERY VOLTAGE

Standard:

11 to 14 V

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

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4.

CONNECT INTELLIGENT TESTER TO DLC3 *
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5.

CHECK AND CLEAR DTCS AND FREEZE FRAME DATA *
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6.

VISUAL INSPECTION
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7.

SETTING CHECK MODE DIAGNOSIS *

Refer to the CHECK MODE PROCEDURE 2007 MY LX470 [08/2006 -        ]; A750F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: CHECK MODE PROCEDURE .

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8.

PROBLEM SYMPTOM CONFIRMATION

Refer to the ROAD TEST 2007 MY LX470 [08/2006 -        ]; A750F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: ROAD TEST .

Result

Proceed to

Symptom does not occur

A

Symptom occurs

B
B

GO TO STEP 10
A

9.

SYMPTOM SIMULATION

Refer to the ELECTRONIC CIRCUIT INSPECTION PROCEDURE 2007 MY LX470 [08/2006 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: ELECTRONIC CIRCUIT INSPECTION PROCEDURE .

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10.

DTC CHECK *

Refer to the DTC CHECK / CLEAR 2007 MY LX470 [08/2006 -        ]; A750F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: DTC CHECK / CLEAR .

Result

Proceed to

DTC is not output

A

DTC is output

B
B

GO TO STEP 19
A

11.

BASIC INSPECTION

Refer to the AUTOMATIC TRANSMISSION FLUID 2007 MY LX470 [08/2006 -        ]; A750F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION FLUID: ADJUSTMENT .

Refer to the PARK/NEUTRAL POSITION SWITCH 2007 MY LX470 [08/2006 -        ]; A750F AUTOMATIC TRANSMISSION: PARK / NEUTRAL POSITION SWITCH: INSPECTION .

Refer to the FLOOR SHIFT ASSEMBLY 2007 MY LX470 [08/2006 -        ]; A750F AUTOMATIC TRANSMISSION: FLOOR SHIFT ASSEMBLY: REMOVAL .

NG

GO TO STEP 21
OK

12.

MECHANICAL SYSTEM TEST

Refer to the MECHANICAL SYSTEM TEST 2007 MY LX470 [08/2006 -        ]; A750F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: MECHANICAL SYSTEM TESTS .

NG

GO TO STEP 18
OK

13.

HYDRAULIC TEST

Refer to the HYDRAULIC TEST 2007 MY LX470 [08/2006 -        ]; A750F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: HYDRAULIC TEST .

NG

GO TO STEP 18
OK

14.

MANUAL SHIFTING TEST

Refer to the MANUAL SHIFTING TEST 2007 MY LX470 [08/2006 -        ]; A750F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: MANUAL SHIFTING TEST .

NG

GO TO STEP 17
OK

15.

PROBLEM SYMPTOMS TABLE CHAPTER 1

Refer to the PROBLEM SYMPTOMS TABLE 2007 MY LX470 [08/2006 -        ]; A750F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: PROBLEM SYMPTOMS TABLE .

NG

GO TO STEP 20
OK

16.

PROBLEM SYMPTOMS TABLE CHAPTER 2

Refer to the PROBLEM SYMPTOMS TABLE 2007 MY LX470 [08/2006 -        ]; A750F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: PROBLEM SYMPTOMS TABLE .

NG

GO TO STEP 18
OK

17.

PROBLEM SYMPTOMS TABLE CHAPTER 3

Refer to the PROBLEM SYMPTOMS TABLE 2007 MY LX470 [08/2006 -        ]; A750F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: PROBLEM SYMPTOMS TABLE .

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18.

PART INSPECTION
NG

GO TO STEP 21
OK

19.

DTC CHART

Refer to the DIAGNOSTIC TROUBLE CODE CHART 2007 MY LX470 [08/2006 -        ]; A750F AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: DIAGNOSTIC TROUBLE CODE CHART .

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20.

CIRCUIT INSPECTION
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21.

REPAIR OR REPLACE
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22.

CONFIRMATION TEST
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END