Toyota Sienna Service Manual: 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 systems
• The intelligent tester can be used at steps 3, 4, 6, and 9.

1 Vehicle brought to workshop

2 Customer problem analysis

3 Connect the obd ii scan tool or intelligent tester to dlc3

4 Check and clear dtcs and freeze frame data

Hint: (see page ax-27).

5 Visual inspection

6 Setting the Check Mode Diagnosis

HINT: (See page AX-28).

7 Problem Symptom Confirmation

HINT: (See page AX-9).

8 Symptom Simulation

HINT: (See page IN-35).

9 DTC Check

HINT: (See page AX-27).

10 Basic Inspection

HINT: (See page AX-127, AX-123 and AX-148).

11 Mechanical System Test

HINT: (See page AX-12).

12 Hydraulic Test

HINT: (See page AX-14).

13 Manual Shifting Test

HINT: (See page AX-15).

14 Problem Symptoms Table Chapter 1

HINT: (See page AX-19).

15 Problem Symptoms Table Chapter 2

HINT: (See page AX-19).

16 Part Inspection

17 DTC Chart

HINT: (See page AX-35).

18 Circuit Inspection

19 Repair or Replace

20 Confirmation Test

End