2UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2007 MY LX470 [08/2006

Last Modified: 7-3-2017	6.8:8.0.40	Doc ID: RM000000PD9031X
Model Year Start: 2007	Model: LX470	Prod Date Range: [08/2006 - ]
Title: 2UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2007 MY LX470 [08/2006 - ]

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:

*: Use the intelligent tester.

1.	VEHICLE BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS

3.	CONNECT INTELLIGENT TESTER TO DLC3*

HINT:

If the display indicates a communication fault in the tester, inspect the DLC3.

4.	CHECK DTC AND FREEZE FRAME DATA*

HINT:

Record or print DTCs and freeze frame data, if necessary.

5.	CLEAR DTC AND FREEZE FRAME DATA*

6.	CONDUCT VISUAL INSPECTION

7.	SET CHECK MODE DIAGNOSIS*

8.	CONFIRM PROBLEM SYMPTOMS

HINT:

If the engine does not start, first perform the "check DTC" procedures and "conduct basic inspection" procedures below.

Result	Proceed to
Malfunction does not occur	A
Malfunction occurs	B

GO TO STEP 10

9.	SIMULATE SYMPTOMS

10.	CHECK DTC*

Result	Proceed to
Malfunction code	A
No code	B

GO TO STEP 12

11.	REFER TO DTC CHART

GO TO STEP 14

12.	CONDUCT BASIC INSPECTION

Result	Proceed to
Malfunctioning parts not confirmed	A
Malfunctioning parts confirmed	B

GO TO STEP 17

13.	REFER TO PROBLEM SYMPTOMS TABLE

Result	Proceed to
Malfunctioning circuit confirmed	A
Malfunctioning parts confirmed	B

GO TO STEP 17

14.	CHECK ECM POWER SOURCE CIRCUIT

15.	CONDUCT CIRCUIT INSPECTION

Result	Proceed to
Malfunction not confirmed	A
Malfunction confirmed	B

GO TO STEP 18

16.	CHECK FOR INTERMITTENT PROBLEMS

GO TO STEP 18

17.	CONDUCT PARTS INSPECTION

18.	IDENTIFY PROBLEM

19.	ADJUST, REPAIR OR REPLACE

20.	CONDUCT CONFIRMATION TEST

END