Fuel Pump Relay
NOTE:
For connector identification, see CONNECTOR IDENTIFICATION . For component location, see COMPONENT LOCATIONS . For circuit identification and wiring diagram, see WIRING DIAGRAMS . After each repair procedure has been completed, reconnect all components.
NOTE:
For fuel pump relay circuit testing, perform appropriate diagnostic test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS
in SELF-DIAGNOSTICS - GRAND CHEROKEE article.
- Turn ignition off. Remove fuel pump relay from Power Distribution Center (PDC). PDC is located in engine compartment, near battery. Using an ohmmeter, check for continuity between fuel pump relay terminals No. 30 and 87. If continuity exists, replace relay. If continuity does not exist, go to next step.
- Measure resistance between fuel pump relay terminals No. 85 and 86. If resistance is not 50-90 ohms, replace fuel pump relay. If resistance is 50-90 ohms, go to next step.
- Using jumper wires, apply positive battery voltage to relay terminal No. 86 and ground relay terminal No. 85. Check for continuity between relay terminals No. 30 and 87. Continuity should exist. If continuity does not exist, replace relay.