Test TC-187A: EVAP Leak Monitor Pinched Hose

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS article.

CAUTION: When performing test procedures keep all ignition sources away from test area. Ensure test area is well ventilated. Ensure fuel tank is at least 1/2 full before performing test. Pressurizing fuel tank with less than 3 gallons of fuel may result in an explosion caused by ignition of the fumes. Wear safety glasses when performing test procedures. If vehicle is not being tested on a hoist, ensure parking brake is applied and drive wheels are blocked before performing test procedures.

NOTE: Evaporative System Pressure Pump (6872A) is necessary to perform this test.

For EVAP and Leak Detection Pump (LDP) location, see EVAP & LEAK DETECTION PUMP (LDP) LOCATION table. Perform evaporative system pressure pump self-test specified on cover of Evaporative System Pressure Pump (6872A).

EVAP & LEAK DETECTION PUMP (LDP) LOCATION

Model/Component		Location
Avenger, Sebring Coupe & Talon
EVAP		Inside Fuel Tank
LDP		Attached To Rear Suspension Crossmember
Breeze, Cirrus & Stratus
EVAP & LDP		Top Of Fuel Tank
Neon & Sebring Convertible
EVAP & LDP		Behind Passenger Headlight

Connect EVAP pressure pump supply hose to vehicle pressure test port. Vehicle pressure test port is located in vapor line between vapor canister and EVAP solenoid.
Start engine. Using scan tool in LDP SYSTEM TEST, follow instructions displayed on screen. Using Evaporative System Pressure Pump (6872A), set pressure hold to OPEN, and set vent to CLOSED. Turn pump timer on. Allow pressure to build to at least 14 in. of water vacuum.
Monitor pressure and remove gas cap. If pressure dropped when gas cap was removed, go to next step. If pressure did not drop when gas cap was removed, go to step 6) .
Reinstall gas cap and allow pressure to build up to at least 14 in. of water vacuum. Disconnect LDP hose from LDP. If pressure dropped when hose was disconnected, replace LDP. Perform TEST VER-5A . If pressure did not drop when hose was disconnected, replace evaporative canister. Perform TEST VER-5A .
Reinstall gas cap. Allow pressure to build to at least 14 in. of water vacuum. Remove fuel tank rollover hose from EVAP canister. If pressure did not drop when hose was disconnected, go to next step. If pressure dropped when hose was disconnected, repair pinched hose from fuel tank to EVAP canister. Perform TEST VER-5A .
Disconnect EVAP purge line at EVAP canister. If pressure dropped when hose was disconnected, replace EVAP canister. Perform TEST VER-5A . If pressure did not drop when hose was disconnected, repair obstruction in EVAP purge line to EVAP canister. Perform TEST VER-5A .