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Code 16: Power Supply

WARNING: This page is about a different car, the 1994 Mitsubishi Pickup. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect ECU harness connector. Turn ignition on. Using DVOM, measure voltage between ECU harness connector terminals No. 1 and 2 and vehicle ground. See Figure . Voltage should be battery voltage. If voltage is not within specification, inspect and repair circuits between fuses No. 1 and 20 and ECU.
  2. Conduct performance test on alternator. Ensure output is 13.9-14.9 volts at 68°F (20°C). Repair charging system as needed. If after all tests have been completed system still does not function properly, substitute ECU with known good unit and retest system.
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