Toyota Sienna Service Manual: Data list / active test
1. READ DATA LIST
HINT: Using the intelligent tester to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.
- Connect the intelligent tester to DLC3.
- Turn the ignition switch to the ON position.
- According to the display on the tester, read the "DATA LIST".
HINT: "3" is OK but "1" is NG → ECM failure "1" is OK but "2" is NG → DTC output or ECM failure "3" is OK but cruise indicator does not turn on → CRUISE MAIN indicator, wire harness, or ECM failure
2. PERFORM ACTIVE TEST
HINT: Using the intelligent tester to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.
- Connect the intelligent tester to the DLC3.
- Turn the ignition switch to the ON position.
- Perform the ACTIVE TEST according to the display on the tester.
HINT: The ignition switch must be turned on to proceed with the ACTIVE TEST using the intelligent tester.
Combination meter:
Fail-safe chart
HINT:
If the following conditions are detected while the cruise
control is in operation, the system clears the stored vehicle
speed in the ECM and cancels the cruise control operation.
...
Diagnostic trouble code chart
If a trouble code is indicated during the DTC check, check the
circuit listed for that code in the table below, and proceed to
the applicable page.
CRUISE CONTROL SYSTEM
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Other materials:
How to proceed with
troubleshooting
1 VEHICLE BROUGHT TO WORKSHOP
2 CUSTOMER PROBLEM ANALYSIS
Interview the customer and confirm the trouble.
Confirm the problem by duplicating the conditions
described by the customer
3 BASIC INSPECTION
Basic inspection.
Measure the battery voltage.
Standard voltage:
11 ...
Removal
1. REMOVE FRONT DOOR WINDOW FRAME MOULDING
Remove the screw.
Using a heat light, heat the front door window frame
moulding between 40 to 60 C (104 to 140 F).
NOTICE:
Do not heat the front door window frame
moulding excessively.
Slide the front door window frame moulding upward
...
VC Output Circuit
DESCRIPTION
The ECM constantly uses 5 V from the battery voltages supplied to the +B
(BATT) terminal to operate the
microprocessor. The ECM also provides this power to the sensors through the VC
output circuit.
When the VC circuit is short-circuited, the microprocessor in the ECM and
sens ...
