Test TC-160A: EVAP Leak Monitor Small Leak Detected

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 as identified on cover of Evaporative System Pressure Pump (6872A). 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.

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

Using scan tool in LDP SYSTEM TEST, press 3 to hold. Disconnect EVAP purge solenoid electrical connector. Set pressure hold to OPEN, and set vent to CLOSED. Turn pump timer on. Perform IM240 simulation as described on cover of Evaporative System Pressure Pump (6872A). If pressure dropped more than 8 in. of water vacuum in 2 minutes, go to step 5) . If pressure does not drop more than 8 in. of water vacuum in 2 minutes, go to next step.
Condition to set trouble code is not present at this time. EVAP LEAK MONITOR SMALL LEAK DETECTED DTC sets if a leak larger than .040 in. Hg and smaller than .080 in. Hg in evaporative system. Possible causes are: a leak in evaporative system between .040-.080 in. Hg or Leak Detection Pump (LDP) failure. Go to next step.
Inspect all related wiring, connectors and hoses and repair as necessary. Perform TEST VER-6A . If no problems were found with wiring, connectors and hoses, see INACTIVE TROUBLE CODE CONDITION . Test is complete. Perform TEST VER-6A .
To continue test, Ultrasonic Leak Detector (6904) is necessary. While scan tool is still in LDP SYSTEM TEST, set pressure hold to OPEN and set vent to CLOSED position. Turn pump timer on. Move Evaporative System Pressure Pump (6872A) away from vehicle to prevent operating noise from interfering with testing procedure.
Using ultrasonic leak detector, start listening for leaks at fuel cap, fuel tank rollover valve, EVAP canister, LDP and EVAP solenoid. If any leaks are heard with ultrasonic leak detector, repair or replace leaking component. Perform TEST VER-6A . If no leaks are heard with ultrasonic leak detector, replace LDP. Perform TEST VER-6A .