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:
On-vehicle inspection
1. INSPECT FRONT AIRBAG SENSOR (VEHICLE NOT
INVOLVED IN COLLISION)
Perform a diagnostic system check.
2. INSPECT FRONT AIRBAG SENSOR (VEHICLE
INVOLVED IN COLLISION AND AIRBAG HAS NOT
DEPLOYED)
Perform a diagnostic system check.
When the front bumper of the vehicle o ...
How to proceed with
troubleshooting
1 VEHICLE BROUGHT TO WORKSHOP
2 INSPECT BATTERY VOLTAGE
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery
before proceeding.
3 BASIC INSPECTION
Turn the ignition switch ON.
Check whether or not the radio receiver turns on.
Result
4 CHE ...
Disassembly
1. REMOVE FRONT DIFFERENTIAL RING GEAR
(a) Place matchmarks on the front differential ring gear
and differential case.
(b) Remove the 14 bolts.
(c) Using a plastic hammer, tap on the front differential
ring gear to remove it from the case.
2. REMOVE FRONT DIFFERENTIAL CASE FRONT TA ...
