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Control Relay

  1. Control relay is mounted on top of ECU. Disconnect electrical harness and test continuity between terminal Nos. 1 and 7, then 3 and 7. If there is no continuity, relay is good. If continuity is measured, replace control relay.
  2. Apply 12 volts across terminal Nos. 8 (positive) and 4 (negative) while testing continuity between terminal Nos. 3 and 7. If continuity exists, relay is good. If not, replace relay.
  3. Apply 12 volts across terminal Nos. 6 (positive) and 4 (negative) while testing continuity between terminal Nos. 1 and 7. If continuity exists, relay is good. If not, replace relay.
  4. Apply 12 volts across terminal Nos. 5 (positive) and 2 (negative) while testing continuity between terminal Nos. 1 and 7. If continuity exist, relay is good. If not, replace relay.
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