EVAP Canister Purge Valve 2, Checking

Diagnostic Procedures



EVAP Canister Purge Solenoid Valve 2, Checking

Special tools, testers and auxiliary items required

• Multimeter.

• Wiring diagram.

Test requirements

• Fuse (SC5) OK.

• The ignition switched off.

• Voltage for the Evaporative Emission (EVAP) Canister Purge Solenoid Valve 2 (N115) is supplied by the Engine Component Power Supply Relay (J757).

Procedure

- Remove left rear wheel housing liner.

- Disconnect the Evaporative Emission (EVAP) Canister Purge Solenoid Valve 2 (N115) electrical harness connector - 2 -.





Checking internal resistance

- Using a Multimeter, check the resistance between terminals 1 and 2 of the Evaporative Emission (EVAP) Canister Purge Solenoid Valve 2 (N115).





Specified value: 22,0 to 30,0 ohms.

If the specified value was not obtained:

- Replace the Evaporative Emission (EVAP) Canister Purge Solenoid Valve 2 (N115).

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.





- Operate the starter briefly.

Specified value: battery voltage.

If the specified value was not obtained:

- Check the wiring connection from the Evaporative Emission (EVAP) Canister Purge Solenoid Valve 2 (N115) electrical harness connector terminal 1 to theEngine 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:

Checking wiring

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 Motronic Engine Control Module (ECM) (J623).

- Using a Multimeter, check the Evaporative Emission (EVAP) Canister Purge Solenoid Valve 2 (N115) electrical connector terminal 2 to theEngine Control Module (ECM) (J623) electrical connector T94a terminal 10 for an open circuit.









Specified value: 1.5 ohms.

If the specification was not obtained:

- Check the wiring for a short circuit to Battery positive (+) 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).

Assembly is performed in the reverse order of removal.

Final procedures

After repair work, the following work steps must be performed in the following sequence:

1. Check the DTC memory. Refer to => [ Diagnostic Mode 03 - Read DTC Memory ] Diagnostic Modes 01 - 09.

2. If necessary, erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Modes 01 - 09.

3. If the DTC memory was erased, generate readiness code. Refer to => [ Readiness Code ] Monitors, Trips, Drive Cycles and Readiness Codes.

- End of diagnosis.