Power Circuits
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Using a voltmeter, check for battery voltage between PCM terminal No. 1 (KAPWR) and ground. See Fig 1 . Check for battery voltage at terminals No. 37 and 57 (VPWR). If battery voltage is not present, EEC power relay is not supplying power. See CIRCUIT TEST B in TESTS W/CODES - EEC-IV (1.9L) article in the ENGINE PERFORMANCE section.