Home ReviewsRefund
Home/Dodge/Dakota/Dodge Dakota II (1997-2004)/Repair manual/Testing & Diagnostics/DTC P1495: LEAK DETECTION PUMP SOLENOID CIRCUIT
Contents Wiring diagrams Section: Testing & Diagnostics All sections

DTC P1495: LEAK DETECTION PUMP SOLENOID CIRCUIT Dodge Dakota II

Testing & Diagnostics ~701 words

Note. For connector terminal ID, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS article.

Note. Leak detection pump solenoid operation is monitored when ignition is on and battery voltage is more than 10.4 volts. Leak detection pump may also be referred to as EVAP leak detection pump. DTC may be stored in Powertrain Control Module (PCM) if state of leak detection pump solenoid does not match state desired by PCM. Possible causes are: defective leak detection pump, defective PCM, or defective connectors or wiring.

  1. Turn ignition on with engine off. Using scan tool, check for DTCs. If DTC SPECIFIC GOOD TRIP counter is displayed and equal to zero, go to next step. If DTC SPECIFIC GOOD TRIP counter is not displayed and equal to zero, go to step 6.
  2. Turn ignition off. Disconnect leak detection pump connector. Leak detection pump is located at driver's side front corner of engine compartment, just below the battery. (Схема №46) Turn ignition on with engine off. Using scan tool, actuate leak detection pump. Using 12-volt test light, check for voltage at terminal No. 2 (White/Dark Blue wire) on leak detection pump connector. If test light illuminates brightly, go to next step. If test light does not illuminate brightly, repair open on White/Dark Blue wire between leak detection pump and PCM. PCM is located at passenger's side front corner of engine compartment on inner fender panel. Perform «TEST VER-5»(ref-9379-S16183295292000102000000).
  3. Ensure ignition in on with engine off and leak detection pump is still actuated with scan tool. Using 12-volt test light connected to battery voltage, check for voltage at terminal No. 3 (White/Dark Green wire) on leak detection pump connector. If test light does not blink, stop actuation of leak detection pump. Go to next step. If test light blinks, replace leak detection pump. Perform «TEST VER-5»(ref-9379-S16183295292000102000000).
  4. Turn ignition off. Disconnect PCM connectors. PCM is located at passenger's side front corner of engine compartment on inner fender panel. Ensure leak detection pump connector is still disconnected. Using ohmmeter, check resistance between ground and terminal No. 3 (White/Dark Green wire) on leak detection pump connector. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair short to ground on White/Dark Green wire between leak detection pump and PCM. Perform «TEST VER-5»(ref-9379-S16183295292000102000000).
  5. Ensure PCM connectors and leak detection pump connector are still disconnected. Using ohmmeter, check resistance between terminal No. 3 (White/Dark Green wire) on leak detection pump connector and terminal No. 10 (White/Dark Green wire) on PCM connector C3. If resistance is less than 5 ohms, replace PCM. Perform «TEST VER-5»(ref-9379-S16183295292000102000000). If resistance is 5 ohms or more, repair open on White/Dark Green wire between leak detection pump and PCM. Perform «TEST VER-5»(ref-9379-S16183295292000102000000).
  6. Turn ignition on. Using scan tool, review FREEZE FRAME data. If DTC matches FREEZE FRAME data DTC, go to next step. If DTC does not match FREEZE FRAME DTC, perform repair procedures for FREEZE FRAME DTC and then perform «TEST VER-5»(ref-9379-S16183295292000102000000).
  7. Ensure ignition is on with engine off. Using scan tool, read FREEZE FRAME data to determine when DTC was stored. Attempt to duplicate conditions recorded in FREEZE FRAME data while noting DTC SPECIFIC GOOD TRIP counter. If DTC SPECIFIC GOOD TRIP counter changes to zero, test is complete. If DTC SPECIFIC GOOD TRIP counter does not change to zero, go to next step.
  8. Turn ignition off. Inspect wiring harness and connectors between PCM and leak detection pump. If no problems exist, go to next step. If any problems exist, repair wiring or connectors as necessary. Perform «TEST VER-5»(ref-9379-S16183295292000102000000).
  9. Turn ignition on with engine off. Using scan tool, actuate LDP SOLENOID. While wiggling harness between leak detection pump solenoid and PCM, listen to leak detection pump solenoid. Leak detection pump is located at driver's side front corner of engine compartment, just below the battery. (Схема №46) PCM is located at passenger's side front corner of engine compartment on inner fender panel. If leak detection pump solenoid stops or starts clicking while wiggling harness, repair harness as necessary. Perform «TEST VER-5»(ref-9379-S16183295292000102000000). If leak detection pump solenoid does not stop or start clicking while wiggling harness, test is complete.

More articles — Engine Controls Self-Diagnostics