How to Set SRT Code

ECM


How to Set SRT Code

To set all SRT codes, self-diagnosis for the items indicated above must be performed one or more times. Each diagnosis may require a long period of actual driving under various conditions.
WITH CONSULT-III
Perform corresponding DTC Confirmation Procedure one by one based on Performance Priority in the table on "SRT Item".
WITHOUT CONSULT-III
The most efficient driving pattern in which SRT codes can be properly set is explained below. The driving pat- tern should be performed one or more times to set all SRT codes.

DRIVING PATTERN





- The time required for each diagnosis varies with road surface conditions, weather, altitude, individual driving habits, etc.
Zone A refers to the range where the time, required for the diagnosis under normal conditions*, is the shortest.
Zone B refers to the range where the diagnosis can still be performed if the diagnosis is not completed within zone A.
*: Normal conditions refer to the following:
- Sea level
- Flat road
- Ambient air temperature: 20 - 30�C (68 - 86�F)
- Diagnosis is performed as quickly as possible under normal conditions.
Under different conditions [For example: ambient air temperature other than 20 - 30�C (68 - 86�F)], diagnosis may also be performed.
Pattern 1:
- The engine is started at the engine coolant temperature of -10 to 35�C (14 to 95�F)
[where the voltage between the ECM terminals 24 (engine coolant temperature sensor signal) and 23
(sensor ground) is 3.0 - 4.3 V].
- The engine must be operated at idle speed until the engine coolant temperature is greater than 70�C
(158�F) [where the voltage between the ECM terminals 24 (engine coolant temperature sensor signal) and 23 (sensor ground) is lower than 1.4 V].
- The engine is started at the fuel tank temperature of warmer than 0�C (32�F) (where the voltage between the ECM terminal 120 (fuel tank temperature sensor signal) and ground is less than 4.1 V).
Pattern 2:
- When steady-state driving is performed again even after it is interrupted, each diagnosis can be conducted.
In this case, the time required for diagnosis may be extended.
Pattern 3:





- Operate vehicle following the driving pattern shown in the figure.
- Release the accelerator pedal during deceleration of vehicle speed from 90 km/h (56 MPH) to 0 km/h (0 MPH).
Pattern 4:
- The accelerator pedal must be held very steady during steady-state driving.
- If the accelerator pedal is moved, the test must be conducted again.
*1: Depress the accelerator pedal until vehicle speed is 90 km/h (56
MPH), then release the accelerator pedal and keep it released for more than 10 seconds. Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH) again.
*2: Checking the vehicle speed with GST is advised.

Suggested Transmission Gear Position for A/T Models
Set the selector lever position in the D with the overdrive switch turned ON.