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:
Turn signal lever
Operating instructions
Right turn
Left turn
Lane change to the right (move
the lever partway and release
it)
The right hand signals will flash 3
times.
Lane change to the left (move
the lever partway and release
it)
The left hand signals will flash 3
times.
Turn sign ...
Horn
To sound the horn, press on or
close to the mark.
WARNINGCaution while driving
Do not adjust the steering wheel while driving.
Doing so may cause the driver to mishandle the vehicle and cause an
accident,
resulting in death or serious injury.
After adjusting the steeri ...
Lumbar support adjuster assembly
INSPECTION
1. INSPECT LUMBAR SUPPORT ADJUSTER ASSEMBLY
Check operation of the lumbar support adjuster
motor.
Check if the lumbar support adjuster moves
smoothly when the battery is connected to the
lumbar support adjuster motor connector
terminal.
OK
If the r ...
