Auto Shutdown (ASD) & Fuel Pump Relays
NOTE:
Auto Shutdown (ASD) and fuel pump relays are tested using the same procedures.
- Turn ignition off. Remove Auto Shutdown (ASD) relay or fuel pump relay. Using a DVOM, measure resistance between relay terminals No. 85 and 86. See Fig 1 . Resistance should be 70-80 ohms. If resistance is within specification, go to next step. If resistance is not within specification, replace relay.
- Using a DVOM, check for continuity between relay terminals No. 30 and 87A. See Fig 1 . Continuity should be present. If continuity is present, go to next step. If continuity is not present, replace relay.
- Using a DVOM, check for continuity between relay terminals No. 30 and 87. See Fig 1 . Continuity should not be present. If continuity is not present, go to next step. If continuity is present, replace relay.
- Using a jumper wire, ground relay terminal No. 85. See Fig 1 . Using another jumper wire, apply battery voltage to relay terminal No. 86. Relay should activate. When relay activates, DVOM should display infinity between relay terminals No. 30 and 87A. If relay activated and DVOM displayed infinity, relay is functioning properly. If relay did not activate or DVOM did not display infinity, replace relay.