Evaporative Emission (EVAP) Canister Purge Regulator Valve N80 , Checking

Evaporative Emission (EVAP) Canister Purge Regulator Valve N80, Checking

Special tools, testers and auxiliary items required
- Multimeter.
- Wiring diagram.

Test requirements
- The Evaporative Emission (EVAP) Canister Purge Regulator Valve N80 fuse OK.
- The ignition switched off.

NOTE: Voltage for the Evaporative Emission (EVAP) Canister Purge Regulator Valve N80 is supplied via the Engine Component Power Supply Relay J757.

Procedure







- Remove the rear engine cover - arrows -.







- Disconnect the Evaporative Emission (EVAP) Canister Purge Regulator Valve N80 electrical harness connector - 3 -.

Checking internal resistance







- Using a Multimeter, check the Evaporative Emission (EVAP) Canister Purge Regulator Valve N80 terminals 1 and 2 for resistance.
Specified value: 22,0 to 30,0 Ohms.

Engine Component Power Supply Relay J757
- Replace the Evaporative Emission (EVAP) Canister Purge Regulator Valve N80.

If the specification is obtained:

Checking voltage supply







- Using a Multimeter, check the electrical harness connector terminal 1 to 2 for voltage.
- Operate the starter briefly.
Specified value: battery voltage.

If the specified value was not obtained:







- Using a Multimeter, check the electrical harness connector terminal 1 to Ground (GND) for voltage.

Evaporative Emission (EVAP) Measure to
Canister Purge Regulator Valve
N80 electrical harness
connector terminal
1 Engine Ground GND)

- Operate the starter briefly.
Specified value: battery voltage.

If the specified value is not obtained:
- Check the wiring connection from the electrical harness connector terminal 1 to the Engine Component Power Supply Relay J757 terminal 2/87 for an open circuit or short to Ground (GND).
- Check the electrical harness connector for damage, corrosion, lose or broken terminals.
- If necessary, repair the wiring connection.

If the specified value was obtained:

Check Ground (GND) activation
If the manufacturers test box is being used. Perform the following step.
- Install the test box.

If the manufacturers test box is not being used. Perform the following step.
- Remove the Engine Control Module (ECM) J623.







- Using a Multimeter , check the Evaporative Emission (EVAP) Canister Purge Regulator Valve N80 electrical connector terminal 2 to Engine Control Module (ECM) J623 electrical connector T94 terminal 49 for an open circuit.

Evaporative Emission (EVAP) Engine Control Module
Canister Purge Regulator Valve (ECM) J623 electrical
N80 electrical harness connector T60 terminal
connector terminal test box socket
2 49

Specified value: 1.5 Ohms max.

If the specification is not obtained:
- Check the wiring for a short circuit to Battery positive (+), Ground (GND) or an open circuit.
- Check the electrical harness connector for damage, corrosion, lose or broken terminals.
- If necessary, repair the wiring connection.

If the specification was obtained:
- Replace the Engine Control Module (ECM) J623.







- Install the rear engine cover - arrows -.

Final procedures
After the repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. Diagnostic Mode 03 - Read DTC Memory
2. If necessary, erase the DTC memory. Diagnostic Mode 04 - Erase DTC Memory
3. If the DTC memory was erased, generate readiness code.

- End of diagnosis.