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Test SP-17C Code 34, Cruise Control Vent Solenoid Control Circuit

  1. Probe terminal No. 53 (Light Green/Red wire) at Single Board Engine Controller (SBEC) connector. If voltage is more than 10 volts, replace SBEC. Perform VERIFICATION TEST SP-VER  . If voltage is less than 10 volts, disconnect cruise control servo connector. Inspect connector. If connector condition is not okay, repair connector as necessary. Perform VERIFICATION TEST SP-VER  .
  2. If connector condition is okay, place DRB-II in ohmmeter mode. Probe terminal No. 3 (Light Green/Red wire) at cruise control servo connector. If resistance is less than 10 ohms, repair short to ground in Light Green/Red wire. Perform VERIFICATION TEST SP-VER  .
  3. If resistance is more than 10 ohms, using an external ohmmeter, check resistance at Light Green/Red wire between terminal No. 53 at SBEC connector and terminal No. 3 at cruise controller connector. If resistance is less than 10 ohms, replace cruise control servo. Perform VERIFICATION TEST SP-VER  . If resistance is more than 10 ohms, repair open in Light Green/Red wire. Perform VERIFICATION TEST SP-VER  .
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