Tank Pressure Control Solenoid Vacuum Valve Inspection

Measuring Tank Pressure Control Solenoid Vacuum (TPC SV) Valve:

Inspecting Tank Pressure Control Solenoid Vacuum (TPC SV) Valve:

TANK PRESSURE CONTROL SOLENOID VACUUM (TPC SV) VALVE INSPECTION

WARNING: Do not suck air through the Tank Pressure Control Solenoid Vacuum (TPC SV) valve tubes and hoses. Fuel vapor inside the TPC SV valve is harmful.

TOOL REQUIRED
J 39200 Digital Multimeter

PROCEDURE
1. Disconnect the TPC SV valve electrical connector.
2. Using J 39200 DVOM, measure resistance of the TPC SV valve between both terminals. If resistance is not 33 to 39 ohms at 20°C (68°F), replace the TPC SV valve. Refer to Service and Repair / Tank Pressure Control Solenoid Vacuum Valve Replacement. Tank Pressure Control Solenoid Vacuum Valve Replacement

If the resistance is within specification, proceed with Step 3.
3. Disconnect the TPC SV valve vacuum hoses from the intake manifold and the vacuum pipe (from TPC valve).
4. Blow into the TPC SV valve vacuum hose that was disconnected from the vacuum pipe. Air should not pass through the TPC SV valve and exit from the intake manifold hose.
5. Connect 12 volts DC to the TPC SV valve terminals.
6. Blow into the TPC SV valve vacuum hose that was disconnected from the vacuum pipe. Air should pass through the TPC SV valve and exit from the intake manifold hose.
7. If the TPC SV valve failed this inspection, replace it. Refer to Service and Repair / Tank Pressure Control Solenoid Vacuum Valve Replacement. Tank Pressure Control Solenoid Vacuum Valve Replacement

If the TPC SV valve passed this inspection, reconnect the vacuum hoses and electrical connector.

For additional TPC SV checks, refer to Computer and Control Systems / System Diagnosis / Procedures / Diagnostic Charts / C Charts / Chart C-3B Tank Pressure Control Solenoid Vacuum Valve Check.