Toyota Sienna Service Manual: Check mode procedure
HINT: Intelligent tester only: Compared to normal mode, check mode is more sensitive to malfunctions. Therefore, check mode can detect the malfunctions that cannot be detected by normal mode.
NOTICE: All the stored DTCs and freeze frame data are erased if:
- the ECM is changed from normal mode to check mode
or vice versa; or 2) the ignition switch is turned off or
turned to the ACC position from the ON position while in
check mode.
Before changing modes, always check and make a note of any DTCs and freeze frame data.
1. CHECK MODE PROCEDURE (Using an intelligent tester)
- Check and ensure the following conditions:
- Battery voltage 12 V or more
- Throttle valve fully closed
- The shift lever in the P or N position
- A/C switched OFF
- Turn the ignition switch off.
- Connect an intelligent tester to the DLC3.
- Turn the ignition switch to the ON position.
- Turn the tester ON.
- Select the following menu items: DIAGNOSIS / ENHANCED OBD II / CHECK MODE.
- Switch the ECM from normal mode to check mode.
- Make sure that the MIL flashes as shown in the illustration.
- Start the engine.
- Make sure that the MIL goes off.
- Simulate the conditions of the malfunction described by the customer.
- Check for DTCs and freeze frame data using the tester.
Freeze frame data
1. DESCRIPTION
The ECM records vehicle and driving condition
information as freeze frame data the moment a DTC
is stored. When troubleshooting, freeze frame data
can be helpful in dete ...
Fail-safe chart
If any of the following DTCs are set, the ECM enters fail-safe
mode to allow the vehicle to be driven temporarily.
HINT:
*1: The vehicle can be driven slowly when the accelerator
ped ...
Other materials:
Removal
NOTICE:
When installing, coat the parts indicated by the arrows
with power steering fluid or molybdenum disulfide
lithium base grease (See page PS-21).
1. INSPECT CENTER FRONT WHEEL
2. REMOVE FRONT WHEEL
3. SEPARATE TIE ROD ASSEMBLY LH
SST 09628-62011
4. SEPARATE TIE ROD ASSEMBLY RH
SST 096 ...
Diagnostic trouble code chart
1. DTCS FOR OCCUPANT CLASSIFICATION SYSTEM
If a trouble code is displayed during the DTC check,
check the circuit listed for the code in the table below
(proceed to the page listed for that circuit).
HINT:
When DTC B1150/23 is detected as a result of
troubleshooting for the airbag system, pe ...
Terminals of ECU
1. CHECK DRIVER SIDE J/B ASSEMBLY (MULTIPLEX NETWORK BODY ECU)
Disconnect the 1C, 1J, 1L, 1K, 1P, B6, B7 and B9 J/
B connectors.
Measure the voltage and resistance according to
the value(s) in the table below.
Standard
HINT:
If the result is not as specified ...
