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Door Lock Relay

  1. Remove relay connectors located at lower right side of instrument panel reinforcement. Using ohmmeter, measure resistance between relay terminals No. 2 and 3, and terminals No. 2 and 5. Resistance should be 5 ohms or less. See Fig 1.
  2. Apply battery voltage to relay terminal No. 1 and ground terminal No. 3. Measure resistance between terminals No. 2 and 4. Resistance should be 5 ohms or less.
  3. Apply battery voltage to relay terminal No. 6 and ground terminal No. 3. Measure resistance between terminals No. 4 and 5. Resistance should be 5 ohms or less. If relay does not test as specified, replace relay.
Fig 1: Identifying Door Lock Relay Terminals (Aerostar)
G96H01381Courtesy of FORD MOTOR CO.