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
System description
1. SYSTEM DESCRIPTION
(a) The ECT (Electronic controlled automatic
transmission/transaxle) is an automatic
transmission/transaxle that electronically controls
shift timing using the ECM. The ECM d ...
Road test
1. PROBLEM SYMPTOM CONFIRMATION
(a) Based on the result of the customer problem
analysis, try to reproduce the symptoms. If the
problem is that the transaxle does not shift up, shift
down, or the ...
Other materials:
Bluetooth
When using the Bluetooth® audio system
In the following conditions, the system may not function.
If the portable audio player is turned off
If the portable audio player is not connected
If the portable audio player’s battery is low
There may be a delay if a cellular phone conn ...
Problem symptoms table
When a "Normal" code is output during a DTC check but
the problem still occurs, use the Problem Symptoms
Table. The suspected areas (circuits or parts) for each
problem symptoms are in the table. The suspected areas
are listed in order of probability. A description of each of
the char ...
Front passenger side power
window switch
Inspection
1. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY
Check the resistance between the switch terminals
when the switch is operated.
Standard
If the result is not as specified, replace the switch
assembly. ...
