Diagnostic Mode 08 - Request Control of On-Board System, Test or Component

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.

• Depending on scan tool and protocol used, diagnostic mode 08 and the information provided may be referred to by a different name.

• 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:





- Switch the ignition off.

If the specified value is obtained:

- Refer to "Diagnostic mode 03: Interrogating fault memory " to check for any DTC's 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.