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Blower Motor Control Relay Check

  1. Remove blower motor control relay, leaving harness connected. See BLOWER MOTOR  under REMOVAL & INSTALLATION. Turn ignition on, and blower motor on high speed. Check blower motor control relay between specified terminals, and compare values to chart. See Fig 1.
  2. If values are not as specified, replace blower motor control relay. If values are as specified, inspect blower motor control relay wiring harness and connector. Repair as necessary.
Fig 1: Testing Blower Motor Control Relay
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