Toyota Sienna Service Manual: 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
(a) Check for DTC(s) and freeze frame data (See page ES- 40).
HINT:
Record or print the DTCs and freeze frame data, if necessary.
4 CLEAR DTC AND FREEZE FRAME DATA
(a) Clear the DTC(s) and freeze frame data (See page ES- 40).
5 CONDUCT VISUAL INSPECTION
6 SET CHECK MODE DIAGNOSIS
(a) Set the check mode (See page ES-43).
7 CONFIRM PROBLEM SYMPTOMS
HINT:
If the engine does not start, perform steps 9 and 11 first.
Result 
8 SIMULATE SYMPTOMS
9 CHECK FOR DTCS
(a) Check for DTCs (See page ES-39).
Result 
10 REFER TO DTC CHART
HINT:
Refer to the DTC chart (See page ES-56).
| GO TO STEP 13 |
11 CONDUCT BASIC INSPECTION
HINT:
Refer to "BASIC INSPECTION" (See page ES-13).
Result 
12 REFER TO PROBLEM SYMPTOMS TABLE
HINT:
Refer to "PROBLEM SYMPTOMS TABLE" (See page ES- 27).
Result 
13 CHECK ECM POWER SOURCE CIRCUIT
HINT:
Refer to "ECM POWER SOURCE CIRCUIT" (See page ES- 437).
14 CONDUCT CIRCUIT INSPECTION
Result 
15 CHECK FOR INTERMITTENT PROBLEMS
HINT:
Refer to "CHECK FOR INTERMITTENT PROBLEMS" (See page ES-13).
| GO TO STEP 17 |
16 CONDUCT PARTS INSPECTION
17 IDENTIFY PROBLEM
18 ADJUST AND/OR REPAIR
19 CONDUCT CONFIRMATION TEST
END
System diagram
...
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:
How to proceed with
troubleshooting
HINT:
Use this procedure to troubleshoot the engine immobiliser
system.
The intelligent tester should be used in steps 4, 5 and 7.
1 VEHICLE BROUGHT TO WORKSHOP
2 CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK
3 CRANK ENGINE FOR MORE THAN 10 SECONDS
4 CHECK FOR DTC
C ...
Test mode procedure
1. SPEED SENSOR SIGNAL CHECK (WHEN USING SST CHECK WIRE):
HINT:
If the ignition switch is turned from the ON to the ACC
or LOCK position during Test Mode, the DTCs of the
signal check function will be erased.
(a) Turn the ignition switch off.
(b) Check that the steering wheel is in th ...
Reassembly
1. INSTALL REAR DOOR WIRE SUB-ASSEMBLY LH
Install the wire.
NOTICE:
When installing the wire, push the areas where
the clips are installed in order to prevent
damage and deformation.
Install the 2 screws.
2. INSTALL REAR DOOR LOCK ASSEMBLY LH
Apply MP grease to the slidi ...
