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Relay Test

WARNING: This page is about a different car, the 2012 RAM Pickup and 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Battery Cables
GC0109965Courtesy of CHRYSLER GROUP, LLC
  1. Disconnect the red (+) battery cable (1).
    Fig 2: Winch Assembly & Bolts
    GC0109966Courtesy of CHRYSLER GROUP, LLC
  2. Remove the winch assembly (2) as necessary to gain access to the relay pack and cover. Refer to WINCH, REMOVAL .
    Fig 3: Power Cable Connections
    GC0109967Courtesy of CHRYSLER GROUP, LLC
  3. Disconnect the three cables connected to the motor on the studs marked F1 (2), F2 (1) and A (3).
    Fig 4: Measuring Resistance Between Studs On Relay 1
    GC0109968Courtesy of CHRYSLER GROUP, LLC
  4. Remove the nut and disconnect the terminal wire (1).
    1. Measure the resistance between the two large studs on relay #1.
      • The resistance should be greater than 1 megaohm.
    2. Apply 12 volts to the small terminal (1) and apply ground to the small terminal (2).
      • Measure the resistance between the two large studs on relay #1.
      • The resistance should be less than 1 ohm.
        Fig 5: Measuring Resistance Between Studs On Relay 2
        GC0109969Courtesy of CHRYSLER GROUP, LLC
  5. Remove the nut and disconnect the terminal wire (1).
    1. Measure the resistance between the two large studs on relay #2.
      • The resistance should be greater than 1 megaohm.
    2. Apply 12 volts to the small terminal (1) and apply ground to the small terminal (2).
      • Measure the resistance between the two large studs on relay #2.
      • The resistance should be less than 1 ohm.
        Fig 6: Measuring Resistance Between Studs On Relay 3
        GC0109970Courtesy of CHRYSLER GROUP, LLC
  6. Remove the nut and disconnect the terminal wire (1).
    1. Measure the resistance between the two large studs on relay #3.
      • The resistance should be greater than 1 megaohm.
    2. Apply 12 volts to the small terminal (1) and apply ground to the small terminal (2).
      • Measure the resistance between the two large studs on relay #3.
      • The resistance should be less than 1 ohm.
        Fig 7: Measuring Resistance Between Studs On Relay 4
        GC0109971Courtesy of CHRYSLER GROUP, LLC
  7. Remove the nut and disconnect the terminal wire (1).
    1. Measure the resistance between the two large studs on relay #4.
      • The resistance should be greater than 1 megaohm.
    2. Apply 12 volts to the small terminal (1) and apply ground to the small terminal (2).
      • Measure the resistance between the two large studs on relay #4.
      • The resistance should be less than 1 ohm.
  8. If the resistance across any of the relays doesn't go from open to closed (megaohms to tenths) then the relay is bad and needs to be replaced. Refer to RELAY, WINCH, REMOVAL .
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