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Starter Relay Test

  1. Locate and remove starter relay. Starter relay is marked "ST". Using ohmmeter, measure resistance between relay terminals No. 3 and 5 without battery voltage applied through terminals No. 1 and 2. See Fig 1. Ensure resistance is within specification. See STARTER RELAY CONDITIONS . If not as specified replace the relay. If as specified, go to step  2.
  2. Check relay operation by applying battery voltage through terminals No. 1 and 2. See Fig 1. Measure resistance between terminals No. 3 and 5. Ensure resistance is within specification. See STARTER RELAY CONDITIONS . If relay does not test as indicated, replace relay. If as specified, relay is good, Install relay in vehicle.
STARTER RELAY CONDITIONS

Ohmmeter Connection Resistance
Terminal No. 3 To 5 With No Battery Voltage Applied Through Terminal No 1 & 2 10,000 Ohms Or More
Terminal No. 3 To 5 With Battery Voltage Applied Through Terminal No. 1 & 2 Less Than One Ohm
Fig 1: Testing Starter Relay
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