Function test
- Connect diagnostic tester, see CONNECT DIAGNOSTIC TESTER .
- Start engine and let run at idle for at least 15 minutes.
- Under address word 33, select "Diagnostic mode 8: Tank leak test".
- Select measuring value "Test-ID 01: Tank leak test".
- Check specified value of tank leak test at idle.
DIAGNOSTIC MODE 8: TANK LEAK TEST
| Test-ID 01: Tank leak test |
Specified value: |
|---|---|
|
Test function active |
NOTE:
- During tank leak test, Engine Control Module (ECM) limits "test function active" to approx. 12 minutes.
- If the accelerator pedal is depressed during the test, the test will be aborted.
- To repeat the tank leak test, switch ignition off and start engine again and let run at idle for at least 15 minutes.
If specified value is obtained:
- End diagnosis and switch ignition off.
If specified value is not obtained:
- EVAP canister system, checking for proper seal, see EVAP CANISTER SYSTEM, CHECKING FOR PROPER SEAL .
- Check Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-, see EVAPORATIVE EMISSION (EVAP) CANISTER PURGE REGULATOR VALVE, CHECKING .
- Leak detection pump (LDP) -V144-, checking, see CHECK LEAK DETECTION PUMP (LDP) .