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
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 ...
Remote Up / Down Function does not Operate
DESCRIPTION
If the REMOTE UP/DOWN function does not operate, any of the following
troubles may be the cause:
There is an open or short circuit in the wiring between the power
window master switch and the
applicable power window regulator switch.
The power window master swit ...
Wiper Signal Circuit
DESCRIPTION
The distance control ECU detects wiper operation. If the windshield wipers
operate in the HI or LO mode,
the cruise control is canceled and the warning sound "pong" is emitted once. In
addition, the following
warnings will continue until the cruise control main switch is ...