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
- 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
- Clear the DTC(s) and freeze frame data
5 CONDUCT VISUAL INSPECTION
6 SET CHECK MODE DIAGNOSIS
- Set the check mode
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
- Check for DTCs.
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
12 REFER TO PROBLEM SYMPTOMS TABLE
HINT: Refer to "PROBLEM SYMPTOMS TABLE".
Result
13 CHECK ECM POWER SOURCE CIRCUIT
HINT: Refer to "ECM POWER SOURCE CIRCUIT"
14 CONDUCT CIRCUIT INSPECTION
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:
Precaution
1. PRECAUTION OF HEADLIGHT BULB
REPLACEMENT
When any defects such as deformation, crack, dent,
chipping, etc. are identified on the discharge
headlight (especially, on the light control ECU),
replace it with a new one.
Even if the operation seems to be normal, the failsafe
...
Removal
1. Disconnect battery negative terminal
2. Remove instrument cluster finish panel
sub-assembly center
Hint:
(see page ip-9)
3. Remove transmission control cable assembly
(a) Remove the nut from the control shaft lever.
(b) Disconnect the transmission control cable assembly
from the con ...
Initialization
Items to initialize
The following items must be initialized for normal system operation
after such cases as the battery being reconnected, or maintenance
being performed on the vehicle.
Item
When to initialize
Power sliding door
(if equipped)
After reconnecting o ...
