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Home >> Mitsubishi >> 2005 >> Montero >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Diagnosis >> On-Vehicle Service >> Automatic Transmission Control Component Check >> A/T Control Relay Check
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A/T Control Relay Check

  1. Remove the A/T control relay.
    Fig 1: Removing A/T Control Relay
    G02418450Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  2. Use jumper wires to connect A/T control relay terminal 2 to the negative battery terminal and terminal 4 to the positive battery terminal.
  3. Check for continuity between A/T control relay terminals 1 and 3 when the jumper wires are connected to and disconnected from the battery.
    A/T CONTROL RELAY CHECK

    JUMPER WIRE CONTINUITY BETWEEN TERMINALS NO. 1 AND NO. 3
    Connected Less than 2 ohms
    Disconnected Open circuit
    Fig 2: Checking Continuity Between A/T Control Relay Terminals 1 And 3
    G02418451Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  4. If there is any problem with the A/T control relay, replace it.
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