Test TC-18A: EVAP Purge Solenoid Circuit

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

For EVAP and Leak Detection Pump (LDP) location, see EVAP & LEAK DETECTION PUMP (LDP) LOCATION table. If vehicle is a Neon, perform TEST TC-18B . If vehicle is a Avenger, Breeze, Cirrus, Sebring Convertible, Sebring Coupe, Stratus or Talon, using scan tool, erase DTCs. Using scan tool, actuate proportional purge solenoid. Using scan tool, read DTCs. If scan tool displays EVAP PURGE SOLENOID CONTROL CIRCUIT, go to step 5) . If scan tool does not display EVAP PURGE SOLENOID CONTROL CIRCUIT, go to next step.

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

Condition to set trouble code is not present at this time. EVAP PURGE SOLENOID CIRCUIT DTC sets after arming conditions are satisfied: not powering down, not already in limp-in, and more than 72 microseconds have passed since last solenoid actuation. The Powertrain Control Module (PCM) will set DTC if actual state of solenoid does not match intended state. Possible causes are: open or shorted control circuit, open fused ignition switch output circuit, open or shorted EVAP purge solenoid control coil, failed PCM, faulty connector terminals or wiring. Go to next step.
Inspect all related wiring and connectors and repair as necessary. If no problems were found with wiring and connectors, go to next step. If related wiring and connectors were repaired, perform TEST VER-2A .
With scan tool still actuating EVAP purge solenoid, wiggle wiring harness from EVAP purge solenoid to PCM. If wiggling interrupted EVAP purge solenoid actuation, repair wiring harness as necessary where wiggling caused problem to appear. Perform TEST VER-2A . If wiggling did not interrupt EVAP purge solenoid actuation, see INACTIVE TROUBLE CODE CONDITION . Test is complete. Perform TEST VER-2A .
Turn ignition off. Disconnect EVAP purge solenoid connector. Using an ohmmeter, check resistance of EVAP purge solenoid. If resistance is 12.8-15.6 ohms, go to next step. If resistance is not 12.8-15.6 ohms, replace EVAP purge solenoid. Perform TEST VER-2A .
Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Disconnect vehicle battery. Using an ohmmeter, check resistance of proportional purge solenoid control circuit between EVAP purge solenoid connector and PCM connector terminal No. 68. See EVAP PURGE SOLENOID CONNECTOR WIRE IDENTIFICATION table. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open proportional purge solenoid control circuit. Perform TEST VER-2A .
Using an ohmmeter, check resistance of pulse width modulated purge sense circuit between EVAP purge solenoid connector and PCM connector terminal No. 70. See EVAP PURGE SOLENOID CONNECTOR WIRE IDENTIFICATION table and PCM CONNECTOR WIRE IDENTIFICATION table. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open pulse width modulated purge sense circuit. Perform TEST VER-2A .
Using an ohmmeter, check resistance of proportional purge solenoid control circuit between PCM connector terminal No. 68 and ground. See PCM CONNECTOR WIRE IDENTIFICATION table. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair short to ground on proportional purge solenoid control circuit. Perform TEST VER-2A .
Using an ohmmeter, check resistance of pulse width modulated purge sense circuit between PCM connector terminal No. 70 and ground. See PCM CONNECTOR WIRE IDENTIFICATION table. If resistance is 5 ohms or more, repair short to ground on pulse width modulated purge sense circuit. Perform TEST VER-2A . If resistance is less than 5 ohms, replace PCM. Perform TEST VER-2A .

EVAP PURGE SOLENOID CONNECTOR WIRE IDENTIFICATION

Application		Wire Color
Avenger, Sebring Coupe & Talon
Proportional Purge Solenoid Control Circuit		Light Green/Black
Pulse Width Modulated Purge Sense Circuit		Black/White
Breeze, Cirrus, Sebring Conv. & Stratus
Proportional Purge Solenoid Control Circuit		Pink/Gray
Pulse Width Modulated Purge Sense Circuit		Light Green/Black

PCM CONNECTOR WIRE IDENTIFICATION

Application		Wire Color
PCM Terminal No. 68 (Proportional Purge Solenoid Control Circuit)
Avenger, Sebring Coupe & Talon		Light Green/Black
Breeze, Cirrus, Sebring Conv. & Stratus		Pink/Gray
PCM Terminal No. 70 (Pulse Width Modulated Purge Sense Circuit)
Avenger, Sebring Coupe & Talon		Black/White
Breeze, Cirrus, Sebring Conv. & Stratus		Dark Blue/White