EGR Canister Purge TVS (EGR-CP-TVS)

Below the switching point;
- Ports 1 and 2 should be blocked
- No ported vacuum should be directed to the canister and EGR valve.

Above the switching point;
- Ports 1 and 2 should be open, allowing ported vacuum to be directed to the canister and EGR valve. Replace valve, if defective.

NOTE: Refer to the number stamped on the base of the switch or valve for calibrated switching or activation temperatures.