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Turbo Gauge & Harness Operational Test

  1. Disconnect turbo pressure sensor harness connector located on right rear of firewall. Turn ignition on. Turbo gauge needle should move to top of gauge.
  2. Jump terminal No. 2 of turbo pressure sensor harness connector to ground. See Figure. Turbo gauge needle should move to bottom of gauge. If gauge needle functions as described, test turbo pressure sensor and meter drive circuit. If gauge needle does not function as described, test turbo gauge resistance.
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