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Toyota Sienna Service Manual: How to proceed with troubleshooting

Toyota Sienna Service Manual / 2GR-FE Engine control system / SFI system / How to proceed with troubleshooting

HINT: The intelligent tester can be used in steps 2, 3, 4, 6 and 9.

1 VEHICLE BROUGHT TO WORKSHOP

2 CONNECT INTELLIGENT TESTER TO DLC3

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

3 CHECK DTC AND FREEZE FRAME DATA

  1. Check for DTC(s) and freeze frame data.

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

4 CLEAR DTC AND FREEZE FRAME DATA

  1. Clear the DTC(s) and freeze frame data

5 CONDUCT VISUAL INSPECTION

6 SET CHECK MODE DIAGNOSIS

  1. Set the check mode

7 CONFIRM PROBLEM SYMPTOMS

HINT: If the engine does not start, perform steps 9 and 11 first.

Result

Result

8 SIMULATE SYMPTOMS

9 CHECK FOR DTCS

  1. Check for DTCs.

Result

Result

10 REFER TO DTC CHART

HINT: Refer to the DTC chart

GO TO STEP 13

11 CONDUCT BASIC INSPECTION

HINT: Refer to "BASIC INSPECTION".

Result

Result

12 REFER TO PROBLEM SYMPTOMS TABLE

HINT: Refer to "PROBLEM SYMPTOMS TABLE".

Result

Result

13 CHECK ECM POWER SOURCE CIRCUIT

HINT: Refer to "ECM POWER SOURCE CIRCUIT"

14 CONDUCT CIRCUIT INSPECTION

Result

Result

15 CHECK FOR INTERMITTENT PROBLEMS

HINT: Refer to "CHECK FOR INTERMITTENT PROBLEMS"

GO TO STEP 17

16 CONDUCT PARTS INSPECTION

17 IDENTIFY PROBLEM

18 ADJUST AND/OR REPAIR

19 CONDUCT CONFIRMATION TEST

END

Definition of terms
Terms Definitions Monitor Description Description of what ECM monitors and how to detect malfunctions (monitoring purpose and details). Related DTCs A gro ...

Check for intermittent problems
1. CHECK FOR INTERMITTENT PROBLEMS HINT: For use of the intelligent tester only: Inspect the vehicle's ECM using check mode. Intermittent problems are easier to detect with an intelligent teste ...

Other materials:

Engine Coolant Temperature Circuit
DESCRIPTION A thermistor is built into the Engine Coolant Temperature (ECT) sensor, of which the resistance value varies according to the ECT. The structure of the sensor and its connection to the ECM are the same as those of the Intake Air Temperature (IAT) sensor. HINT: When any ...

Front seat frame with adjuster
Inspection 1. INSPECT FRONT SEAT ADJUSTER SUB-ASSEMBLY LH  Check operation of the seat frame (slide motor).  Check if the seat frame moves smoothly when the battery is connected to the slide motor connector terminals. OK If the result is not as specified, replace t ...

Sleep Operation Failure of Occupant Classification ECU
DTC B1796 Sleep Operation Failure of Occupant Classification ECU DESCRIPTION During sleep mode, the occupant classification ECU reads the condition of each sensor while the ignition switch is off. In this mode, if the occupant classification ECU detects an internal malfunction, DTC B1796 ...

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