Diagnostic Mode 08 - Request Control of On-Board System, Test or Component
Diagnostic Mode 08 is used to control the operation of an on-board system, test or component. A Mode 8 service can be used to turn on-board system ON or OFF, or to cycle an on-board system, test or component ON or OFF for a specific period of time. The service can also be used to request system status or to report test results.
Diagnostic Mode 08, TID $01
Diagnostic Mode 08, TID $01 is used to determine if the evaporative system may be leaking.
NOTE:
- Depending on scan tool and protocol used, diagnostic mode 08 and the information provided may be referred to by a different name.
NOTE:
- If the accelerator pedal is depressed during the test, the test will be aborted.
Test requirements
- No DTCs stored in the DTC memory.
- Intake Air Temperature (IAT) maximum 60 C.
- Coolant temperature 80 to 110 C.
- Throttle valve angle 12.0 to 16.0%.
Procedure
- Connect the scan tool.
- Start the engine and run at idle for at least 15 minutes.
- Select "Mode 8: Tank Leak Test".
- Select "Test-ID 01: Tank Leak Test".
- Check the specified value of the tank leak test at idle.
- The following will be displayed on the scan tool screen:
| Tank leak test | Specified value | |||||
|---|---|---|---|---|---|---|
| Test function active Test function is being initiated, please wait Test off Test aborted | Test OK | |||||
- Switch the ignition off.
If the specified value is obtained:
- Refer to "Diagnostic mode 03: Interrogating fault memory " to check for any DTCs that may be stored.
- To repeat the tank test, switch the ignition off and start the engine again and let run for 15 minutes at idle.
- Switch the ignition off.
- End of diagnosis.