Neon L4-2.0L SOHC (1995)
Automatic Shut Down (ASD) Relay: Testing and Inspection
Fig. 29 ASD And Fuel Pump Relay Terminals
The following description of operation and tests apply only to the Automatic Shutdown (ASD) and fuel pump relays. The terminals on the bottom
of each relay are numbered (Fig. 29).
OPERATION
Terminal 30: Is connected to battery voltage at all times for both the ASD relay and fuel pump relay.
Terminal 85: The powertrain control module (PCM) grounds the coil side of the relay through terminal number 85.
Terminal 86: Supplies voltage to the coil side of the relay.
-
There is no wire terminal in the cavity.
OFF Position
Terminal 87A: When PCM de-energizes the ASD and fuel pump relays, terminal number 87A connects to terminal 30.
-
This is the OFF position.
-
Terminal 87A is the center terminal on the relay.
-
There is no wire or terminal in the cavity.
In the OFF position voltage is not supplied to the rest of the circuit.
ON Position
Terminal 87: When the PCM energizes the ASD and fuel pump relays, terminal 87 connects to terminal 30.
-
This is the ON position.
-
Terminal 87 supplies voltage to the rest of the circuit.
TEST
1. Remove relay from connector before testing.
2. With the relay removed from the vehicle, use an ohmmeter to check the resistance between terminals 85 and 86 of the relay. The resistance should
be between 70 to 80 ohms.
3. Connect the ohmmeter between relay terminals 30 and 87A of the relay. The ohmmeter should show continuity between terminals 30 and 87A.
4. Connect the ohmmeter between relay terminals 87 and 30 of the relay The ohmmeter should show an open circuit at this time.
5. Connect one end of a jumper wire (16 gauge or heavier) to relay terminal 85. Connect the other end of the jumper wire to the ground side of a 12
volt power source.
6. Connect one end of another jumper wire (16 gauge or heavier) to the power side of the 12 volt power source. DO NOT attach the other end of
the jumper wire to the relay at this time.
